RadarFish: Radar Fish de Pesca · Ramses Fernandez

Two brothers-in-law spent a day in the sea, and built the score Spanish anglers open first every day

What it is A Spanish-language fishing app that combines tides, wind and swell, water temperature and barometric pressure into one 0-to-100 score, telling you which beach, which reservoir, and what time are worth going.

Why it took off The two founders were already known in the Spanish fishing TikTok scene. On launch day, a batch of anglers who trusted them installed it. The product also compresses a dozen websites' data into one readable number, and it goes deep on Spanish local spots, species, and techniques.

BHow you could follow First, be a content creator in some outdoor hobby community (or partner with one). Pick a smaller-language country, translate free weather data into "one score + where to go + what time," and use features like a species guide and leagues to drive both retention and short-video material.

Grade B: the playbook is clear, the market isn't crowded, and the product has no technical moat. But the traction came from the founders' built-in community audience, which a pure developer can't replicate. The same-period copycat Predictor Pesca has only 3 ratings. And a single-country, single-category product has a low revenue ceiling. Almost nobody knows about it yet

Data (updated daily) · Launched 2026-07-09 · Spain ratings 299 · Charted in 11-08 stores 1: iOS · best category chart rank · by store
Data 2026-10-28 → 2026-11-08 (12 days, 12 observations). Lower rank is higher; gaps mean it wasn't charted that day
iOS · rating count · Spain
Data 2026-10-28 → 2026-11-08 (12 days, 12 observations). Apple doesn't publish download counts; rating growth is a proxy for downloads.

Two programmers from Málaga first filmed fishing videos and built up a following of anglers. Then they turned their own "should I go out today" judgment into an app called RadarFish: tides, wind, swell, water temperature, and barometric pressure combined into one 0-to-100 score. It launched in July 2026. After four months, it had 10,000 to 20,000 users across iOS and Android, and charted only in Spain. Anyone can copy the product. What's hard to copy is where the users come from. Below: what it is, how users arrived, how it makes money, why copycats didn't take off, and how you could follow.

An afternoon of skunked fishing

Benajarafe is a beach east of Málaga. Ramsés Fernández and Manuel Coll caught a dozen-odd fish there two days earlier, then came back the next day and caught none. Ramsés later told Málaga Hoy (2026-09-14): "That's when we realized that whenever we plan the trip out, there are fish."

Planning a fishing trip used to mean "going back and forth between a thousand websites and forums": one for tide tables, Windy for swell, and AEMET, Spain's meteorological agency, for weather. Both men were programmers by trade, so they wrote a tool that merged this data into one score. At first it was just for themselves.

The two are real brothers-in-law, and they also run a joint account called "Surfcasting Los Cuñaos", which started as just a way to film memories. By the time the App launched in Jul 10 of 2026, the account already had several viral hits: one in Jan 9 with 351k views, one in Apr 3 with 264k, and one in Mar 21 with 209k (TikTok, 11-06).

What it actually sells

Open the app, and next to the beach, pier, or reservoir you chose is a 0–100 number telling you "is today worth going." Tap in for hourly wind, swell, water temperature, tide coefficient, and sun and moon times, plus a recommended best time. The store page is explicit about data sources: Open-Meteo, AEMET, and official tide sources, all free data. What they sell is the translation. The data itself is free.

The local detail is where they put in the work:

Spots are all in Spain: 3,500 beaches at launch. In September 11 they added rivers and reservoirs (about 2,000 reservoirs and 3,000 river stretches). There are now 5,000+.
Freshwater gets its own scoring, factoring in river flow and reservoir level. Species are calibrated to common Iberian fish: trout, pike, black bass, and Iberian barbel.
Scores are calculated separately for each technique (spinning, eging for squid jigs, and surfcasting for long casts). Pier spots show a warning about recreational fishing regulations. The "daily plan" recommends bait, down to Catalan ragworm, which locals use.

Retention comes from gamification: a catch diary (each catch automatically records the wind, swell, and tide at that moment), leaderboards, achievements, a "fishing Pokédex," and the "leagues" added in version 1.4, which let friends compete by catches, weight, and species. Over four months it went from version 1.0 to 1.4.2 (App Store update history, 11-03). That update cadence is fast for a small team.

Where users come from: mostly their own audience

Channel	What I found
Founders' content account	TikTok @surfcasting.los.cunaos: 7,712 followers, 131k likes, 321 videos. Instagram about 3.3k, YouTube 1.44k subscribers (11-06). The bio links directly to the app account.
Official app account	TikTok @radarfishapp has 3,396 followers. Most videos get 1–4k views. The one promoting the "League" feature got 10-23 69k views.
Launch day	An Instagram reel: iOS is live, Android beta access goes to the first 100 commenters.
Local press	Only Málaga Hoy covered it. Their 9-14 story reported "nearly 12k users in two months."
Offline	The founders are ambassadors for the Italian fishing tackle brand Vercelli. 11-01 ran a weekend event in Fuengirola. The app includes a directory of nearby tackle shops.
Paid ads	Nothing turned up in the Meta or TikTok ad libraries. Ratings grew steadily with no spike like a paid campaign would produce (inferred: essentially no paid acquisition).

The clever part is how the app and content account feed each other. They film a "Pokédex fishing" series, "testing whether this app is accurate," and "testing the best fishing app at a reservoir." Every one is a fishing video and also an ad for the app. Press coverage says people now recognize them on the breakwater, and some want to fish alongside them.

How big the numbers are

Not large, but steady:

iOS: 298 ratings, average 4.82 (Spanish App Store, 11-06). 10-28 of them are 280 stars, with 0–5 new ratings a day. In the last 7 days it added 16, ranking first among Spanish fishing apps. Windy is at 14, and Fishing Points is at 8, but the competitors' totals run from a few thousand to twenty thousand.
Android: 9,020 installs total. From 10-29 to 11-06 it added 770 installs, roughly 80–90 a day (Google Play).
User count: September reports "nearly 12k", the website says "15k+", and the TikTok bio 11-06 says "19k+ anglers". All self-reported, so these may be registered accounts.
Charts: charted in the Spanish store only. In the Sports category the free chart fell from 10-30's #54 to 11-06's #169. The Sports top grossing chart sits between #31 and #144, with a best of #11-01 (rank 31).

The free chart decline could be cold coastal water and the off-season for fishing, or the traffic wave from the content account fading. Right now I can't tell which.

How it makes money

Free plus subscription: Premium costs €4.99 a month or €49.99 a year (Spanish App Store, 11-06), with a 7-day free trial. The free version shows a 2-day forecast. Premium shows 10 days, plus unlimited favorites, alerts, custom spots, event radar, spot comparison, advanced stats, and no ads. The free version has ads, and early on it offered "watch an ad to unlock a few more forecast days."

People are paying, and that much is confirmed: the Spanish Sports top grossing chart has a low bar, so a small number of subscriptions can land a app in the top 100. Actual monthly revenue isn't publicly calculable, and the founders haven't shared it. Two reviews are telling. One 5-star review says "the free version is enough" (9-12), and one 3-star review says "I paid for Premium, but a week-ahead forecast is useless" (8-28). The 10-day forecast paywall doesn't hold up well, since weather forecasts beyond three or four days are unreliable anyway.

Why the copycats didn't take off

The same summer, several Spanish local fishing apps with nearly identical ideas appeared:

Predictor Pesca (launched 2026-08-17): another Spanish far-offshore fishing-spot map that tells you whether to go, which fish are active, when, and what bait to use. It came 5 weeks after RadarFish and has 3 ratings so far.
Sedal (September, river and reservoir maps + regulations) has 7 ratings, Fishrank (September, reservoir catch rankings) has 4, and ClubPesca (August, club management) has 2.

Looking further out, the veterans are still there: Fishing Points (2017 years old, 2,212 ratings in the Spain store, claims 10M users worldwide), Fishbrain (the biggest fishing social app globally, but skewed to US freshwater, with weak Spanish), Windy (22k ratings in Spain, #1 on the Sports Top Grossing chart, but it only gives raw weather data you have to interpret), and the old tide-table tool Mareas Cerca De Mí (5,758 ratings).

This category is not an empty market. There's no technical moat, anyone can write a scoring formula, and the data is free. What separates Predictor Pesca from RadarFish is this: RadarFish launched on day one with a group of anglers who already knew the two founders and were waiting for it.

If it were you

In one line: this is a "become a creator in the niche first, build the tool second" play. The product is easy to copy; the audience is not. Grade B.

Who it fits: someone who is already part of an outdoor hobby community, has a content account, or is willing to post a few videos a week; or a developer who can find a creator like that to partner with and split equity. Smaller-language countries are better: Portugal, Italy, France, Mexico, Argentina. Fishing apps are sparse there too.

Who it doesn't fit: pure developers who want to grow through store search or paid acquisition. Predictor Pesca is the example. It also doesn't fit anyone aiming for big money: even #100 on Spain's Sports grossing chart doesn't bring in much in subscriptions, so at this scale it's more of a side income.

How to do it:

Pick a "check the weather before going out" hobby and one country. Besides fishing, surfing, diving, hiking, mushroom foraging and birdwatching all share the same structure. Pull data from Open-Meteo and local meteorological agencies.
The hard part, the part that takes time, is the local library: specific fishing spots (or surf breaks, or mountain trails), local species, local techniques and baits, regulation notes. This is what determines whether others can copy you.
Put only one score plus "best time" on the home screen. Don't make users read raw data.
Build in the collection log, leaderboards and leagues from the start. They keep people around and double as ready-made short-video material.
Put the paywall on features people use every day, like saving multiple spots, push alerts, and comparing spots, not on "see a longer forecast." Reference price €4.99/month or €49.99/year.

How to get users: your own content account is the main channel, with every video showing a real outing with the app. At launch, collect the first batch of users with "comment to get beta access." Recruit local tackle brands as ambassadors and cross-promote with tackle shops. Run ads in one local newspaper.

When to move: no need to rush these few months. Similar apps are still small, and nobody has scaled into smaller-language markets yet. But the season matters: in the Northern Hemisphere, launch before next spring's fishing season starts (in the Southern Hemisphere, Argentina and Chile are heading into summer now).

Signs you've got it wrong: your content account has run for two or three months and individual videos still don't reach tens of thousands of views; or the app has been out for a month and Android installs don't reach dozens a day. That means the audience side isn't working, and no amount of product detail will carry it. Also, if RadarFish hasn't climbed back up the free chart by next spring, the ceiling for this approach is lower than it looks.

iOS store page ↗

Research notes: competitor table, acquisition evidence, full research report

Competitors

Name	Where	Launched	Scale	How it differs from this one
Fishing Points	iOS	2017	es 2,212 ratings, +7 in 8 days, best Sports grossing rank #18; claims 10M users worldwide	Global, with users marking spots themselves. No single "go or not" score, and no Spain-specific techniques or species
Fishbrain	iOS	2012	The largest fishing social app globally, but weak in Spanish-speaking markets	Skews to US freshwater fishing; social features and user-uploaded data; weak Spain localization
FishMan	iOS	2024-11	fr 2,389 ratings, +7 in 35 days; not charted in es	A France / Latin America fishing-spot app, not targeting Spain
Windy	iOS	2015	es 22k ratings, #1 on Sports grossing	General wind and wave weather; users have to interpret the data themselves. RadarFish translates it into a fishing score and spot recommendations
Mareas Cerca De Mí / Nautide	iOS	2015 / 2018	es 5,758 / 608 ratings	An old tool with tide times plus sunrise/sunset tables. No spot library, log, community or gamification
Fishing Calendar / Previsión de pesca / FisherPal	iOS	2011–2025	es 0–434 ratings, growth basically flat	A generic global fishing index with no spot breakdown and no local knowledge
Predictor Pesca	iOS	2026-08-17	es 3 ratings	Nearly the same idea (Spanish surfcasting scoring), but without a content account driving installs, and it never gained traction
Sedal / Fishrank	iOS	2026-09	es 7 / 4 ratings	Separately built river and reservoir maps plus regulations, and a reservoir catch leaderboard. Each covers only part of what RadarFish does
Lowrance / Deeper	iOS	2019	es 176 / 39 ratings	A companion app for fish-finder hardware

Where users come from

Verified The founders' own TikTok / YouTube / IG fishing accounts: @surfcasting.los.cunaos has 7,712 followers and 131k likes, with pre-launch hit videos at 351k / 264k / 209k views, and the bio links @radarfishapp. YouTube has 1.44k subscribers and includes videos testing the app. A Málaga Hoy article puts their followers at about 7k on TikTok, 3k on IG and 1k on YouTube.
Verified official product TikTok @radarfishapp: 3,396 followers, 47 videos; the league promo video got 10-2369k views, most others 1–4k, mostly feature tutorials and 7-day trial pitches
Verified Comments-for-beta-access at launch: Instagram reel; iOS was live, and the first 100 commenters got Android beta access.
Verified local media: Málaga Hoy reported 2026-09-14, and cross-posted to its IG / FB / TikTok / YouTube Shorts
Verified Tackle brand ambassadors and offline events: the founder's bio says Vercelli Embajadores; 11-01 runs events with Fuengirola Eventos Náuticos; the app has a directory of partner tackle shops.
Inferred App Store search: the title includes "Radar Fish de Pesca", and the description covers pesca / mareas / embalses. No keyword ranking data.
Inferred Paid ads: nothing found in the metaads or tiktokads libraries. Rating growth is steady, with no paid-spend spikes.

RadarFish: Radar Fish de Pesca (iOS 6762136018) research report

In one line: two Málaga programmers (Ramsés Fernández and Manuel Coll, actual brothers-in-law) first built a fishing content account, "Surfcasting Los Cuñaos", which reached about 7.7k TikTok followers with a top video at 350k views. They then turned the "go or not" judgment they used themselves into an app: it combines tide, wind, waves, water temperature, air pressure and moon phase into a 0–100 score, covering 5000+ coastal, river and reservoir spots across Spain. Launched 2026-07-10; after four months it has 1.5–19k users across iOS and Android. It worked for three reasons: a built-in audience of anglers from the founders; Spanish-only and Spain-specific spots, with complex data compressed into one score; and a low bar on Spain's Sports grossing chart. The scale is small, there's no public revenue, no evidence of paid ads was found, and almost nobody outside the niche knows it.

1. How to read the data

Charted only in Spain: in the appstore records from 2026-10-28 to 11-06, only the es store has entries. In Sports (6004) on the free chart, it ranked #54–169, slipping steadily (10-30 #54 → 11-06 #169). On the Sports grossing chart it ranked #31–144 (best #31,11-06 on 11-01, then #100) (appstore.chart_rank). The App Store page shows "N.º 187 Deportes" as of 11-06.
Ratings: 298 in total, averaging 4.82 (iTunes lookup es, 2026-11-06). 10-28 are from the last 280 days, with 10 more added in 18 days, 0–5 per day. About 120 days after launch they had 298 in total, roughly 2.5 per day on average, and about 1.8/day over the last 10 days. Growth is steady, with no acceleration.
Peer comparison (es, new ratings over the last 7 days, appstore.app_profile, 11-06): RadarFish 16, Windy 14, Fishing Points 8, Mareas Cerca De Mí 5, Lowrance 2, other fishing apps 0–1. It ranks first among Spanish fishing apps for new ratings, but the absolute numbers are small. Total ratings: Fishing Points 2,212, Mareas Cerca De Mí 5,758, Windy 21,921, RadarFish 298.
Android: com.radarfish.app has 9,020 installs in total, and went from 10-29 to 11-06 with 770 added, about 85–110 per day (googleplay records). AppBrain records its best rank as #95 on Spain's Sports free chart.
User count: Málaga Hoy reported "nearly 12k users in two months" (2026-09-14); the official site says "+15k"; the @radarfishapp TikTok bio (11-06) says "+19.000 pescadores". Android is about 9k, and iOS, estimated from the rating count, is in the same range, so the figures are consistent.
Reviews: mostly 5-star. One 3-star review says "I paid for Premium, but the forecast I saw a week ahead wasn't useful" (2026-08-28). That shows people really are paying, and it suggests the 10-day forecast paywall doesn't hold up well.

2. Product and monetization

Core: the 0–100 "fishing score", plus an hourly forecast (wind, waves, water temperature, tide coefficient, sunrise/sunset) and a tide table. Freshwater uses a separate engine that looks at flow, reservoir level and water temperature, calibrated to common Spanish species: trout, pike, zander, black bass, carp, Iberian barbel, tench. Data comes from Open-Meteo, AEMET (Spain's meteorological agency) and official tide sources (per the App Store description).
Spots: at launch only about 3,500 beach spots; after the Sep 11 update, rivers and reservoirs were added (about 2,000 reservoirs and 3,000 river stretches), and it now has 5000+ (Málaga Hoy; official site).
Retention features: a catch log (each entry automatically saves the wind, waves and tide at the time), leaderboards, achievements, a "fish species collection", home-screen widgets, and alerts for "golden hours / score jumps / tide changes". 1.4.0 added leagues where you compete with friends, scored on catches, weight, species and days fished. They also added a "daily plan" (recommended techniques and baits) and scores customized by technique (spinning, eging, surfcasting). 1.2.0 added a directory of nearby partner tackle shops. Updates have been frequent, and as of 11-03 the app is at 1.4.2 (App Store version history).
Monetization: free plus subscription. The free tier shows a 2-day forecast, Premium shows 10 days, and saving spots, alerts and custom spots are unlimited. Premium also includes a live activity radar, spot comparison and advanced stats. New users get a 7-day Premium trial, after which they choose monthly or annual. Specific prices are unverified. The free version has ads, and an early version let users "unlock forecast days by watching an ad"; there's also an ad consent prompt. Partner tackle shops could be a third revenue stream (unverified).
Grossing chart bar: ranking #31–144 on Spain's Sports grossing chart needs very little daily revenue. It only shows that a steady stream of small subscriptions exists; it can't tell us the dollar amount. No TrustMRR record was found, and the founders haven't shared revenue.

3. Competitors

Competitors	Platform	Launched	Scale	How it differs from RadarFish
Fishing Points	iOS/Android	2017	es 2,212 ratings, +7 in 8 days; best Sports grossing rank #18; claims 10M users worldwide	Global and multilingual, with users marking spots themselves and a map-heavy design. No single "go or not" score, and no understanding of Spanish local techniques
Fishbrain	iOS/Android	2012	The largest fishing social app globally; weak in the es store (pt 18 ratings, ar 12)	Skews to US freshwater fishing, with social features and spot data from user uploads. Weak Spanish localization and weak coverage of Spanish coasts
FishMan	iOS/Android	2024-11	fr 2,389 ratings, +7 in 35 days; ar 182	A France / Latin America fishing-spot app, growing faster than RadarFish; not charted in es
Windy	iOS/Android/web	2015	es 22k ratings, #1 on Sports grossing	General weather and wind data don't give a fishing score or pick spots, so users have to decode the numbers themselves. RadarFish turns that data into a single score.
Mareas Cerca De Mí / Nautide	iOS/Android	2015 / 2018	es 5,758 / 608 ratings	Old tools like tide tables and sun/moon calendars have a "fishing activity index" but no spot database, logs, or community.
Fishing Calendar, Previsión de pesca, FisherPal, etc.	iOS	2011–2025	es 0–434 ratings, growth basically flat	Generic sun/moon and barometric pressure "fishing indexes" that don't distinguish spots. Mostly the same global template with a new skin.
Lowrance, Deeper	iOS/Android	2019	es 176 / 39 ratings	Companion apps from hardware makers (fish finders)
Predictor Pesca	iOS	2026-08-17	es 3 ratings	Nearly the same idea: a Spanish surfcasting spot map that tells you whether to go, which fish are active, what hour, and what bait to use. It launched 5 weeks after RadarFish and hasn't gained traction.
Sedal, Fishrank, ClubPesca	iOS	2026-08/09	es 7 / 4 / 2 ratings	A wave of local Spanish fishing apps: Sedal does river and reservoir maps plus regulations, Fishrank does a reservoir leaderboard, ClubPesca does club management. All partially overlap with RadarFish, and all are small.
Spearo, VISDEX	iOS	2026-07	es 11 / 0 ratings	Multilingual fishing apps from overseas indie devs (spearfishing / catch logs) that launched around the same time and haven't taken off.

Takeaway: this category has established global players and a pile of small "fishing index" tools. It isn't an empty market. RadarFish's position is "Spain only, in Spanish, compressing the data into one score, plus community and gamification." The local apps that launched at the same time (Predictor Pesca, Sedal, Fishrank) didn't take off either, which suggests RadarFish's edge comes mainly from distribution, not from the category itself.

4. How users found it

Founders' own content account (confirmed, main channel): "Surfcasting Los Cuñaos," two brothers-in-law fishing from Málaga beaches, mixing comedy and tutorials. TikTok @surfcasting.los.cunaos has 7,712 followers, 131k likes, and 321 videos (TikHub, 11-06). The pinned hits all predate the app launch: 2026-01-09, 351k views; 2026-03-21, 209k; 2026-04-03, 264k. There's also ~3.3k on Instagram, 1.44k YouTube subscribers with 316 videos, and 6,743 Facebook likes. The bio links directly to @radarfishapp. A YouTube video tests "the best fishing app at the reservoir," and a TikTok series called "Pokedex Pesquera" (fish encyclopedia) promotes app features. On launch day they posted a reel on Instagram announcing iOS was live and Android beta would go to the first 100 commenters, a comment-for-access play.
产品官方号 @radarfishapp(确认):3,396 粉、2.8 万赞、47 条视频。大多数 1–4k 播放;2026-10-23 宣传「联赛」功能那条有 6.9 万播放,10-16「实测 App 准不准」那条 1.17 万。内容就是功能教程、找共鸣的段子和「7 天免费」的转化引导。
Local press (confirmed): Málaga Hoy ran a story (2026-09-14), cross-posted to its Instagram, Facebook, TikTok, and YouTube Shorts. It's the only local paper that covered it; national and tech media didn't.
Brand / offline ties (partly confirmed): The founder's TikTok bio lists "Vercelli Embajadores" (ambassador for Italian tackle brand Vercelli). They also co-ran weekend events with Fuengirola's "Eventos Náuticos" (11-01). Press coverage mentions plans for a meetup with a raffle. The app's directory of partner tackle shops is also an offline channel.
Store search (inferred): The name includes "Radar Fish de Pesca," and the description is stuffed with keywords like "pesca, mareas, ríos, embalses." The Android link carries utm_source=google organic. Spanish fishing keywords are weakly contested, so organic search probably contributes, but there's no keyword ranking data.
Paid acquisition (not found): Neither the metaads nor tiktokads library shows RadarFish ads. (The libraries only track listed advertisers, so no hits doesn't mean no spend.) The growth pattern, a few ratings a day with no spikes, doesn't look like heavy spending.
Community / virality mechanics (mechanism confirmed, impact unverified): Leagues require inviting friends by link. Catches and spots generate shareable cards, and leaderboards push users to compare themselves to each other.
X / Reddit / HN: x-radar shows 120 relevant posts in the last 0 days. No related discussion on Reddit.

5. Why it can break out

Audience first, product second: Six months before launch, the founder's content account already had viral videos with hundreds of thousands of views and had built about 10k cross-platform followers. When the app launched, a group of fishers who trusted them installed it, reaching 12k users within two months (Málaga Hoy).
Compressing "checking ten websites" into one score: The founder said that before building the app he had to "bounce between a thousand websites and forums" (Málaga Hoy). Windy, tide tables, and AEMET data are all free. RadarFish translates them into a 0–100 score plus "best time" and "which beach to go to." Beginners also say "I'm just starting out, this should be really useful."
Deep localization, not just translation: Spots are specific Spanish beaches, piers, and reservoirs. Species are calibrated to Iberian barbel and bass. Techniques split into eging and surfcasting. Bait goes down to "gusana catalana" (Catalan worm). It also flags regulations for recreational fishing from harbor piers. Global apps struggle to reach that level of detail.
Low-bar charts plus real payers: Spain's Sports Top Grossing chart has a low bar, so a small number of monthly or annual subscribers can reach the top 100, which makes it look strong on that chart. Actual scale is only tens of thousands of users.
Fast iteration, focus on retention: From 1.0.x to 1.4.2 in four months, adding widgets, freshwater, tackle shops, leagues, and daily plans. Gamification (leaderboards, achievements, the encyclopedia, leagues) pushes what is essentially a low-frequency weather tool toward a high-frequency community.

6. Differentiation, and whether it's really why it grew

The differentiator is "local Spanish spots + 0–100 readable scores + a founder who is himself a content creator in this scene." There's no technical moat: the data is public and free, and anyone can write a scoring formula. Predictor Pesca is a counterexample with nearly the same idea, launched 5 weeks later, and barely any users, which shows that product differentiation alone doesn't generate scale. The real driver is distribution: the founder already had credibility in Spain's fishing TikTok scene, and the app's features (encyclopedia, leagues, accuracy tests) became content for his daily videos. Product differentiation decides whether the people who arrive stay and pay (4.8 rating, with reviews praising "the free version already has enough info"). Whether people arrive at all comes down to the content account.

7. Visibility and copycats

Visibility: Still barely known. Only one local Málaga paper has covered it. No coverage on X, Reddit, HN, or tech media. No public revenue. No discussion outside fishing circles.
Copycats: No direct clones spotted. A cluster of local Spanish fishing apps launched around the same time: Predictor Pesca (2026-08-17, surfcasting scores, the closest match), Sedal (2026-09-05), Fishrank (2026-09-19), and ClubPesca (2026-08-18), all with single-digit ratings. It's unclear whether they're following RadarFish or whether AI coding has lowered the barrier and several people hit the same idea at once.

8. What to borrow

"Niche interest content account + localized tool subscription": build trust in a small language and hobby with real-person content, then turn the creator's own workflow into an app. The creator uses the app daily to make content, so acquisition costs next to nothing.
Turn public, free data (Open-Meteo, the national weather service, tides) into "one score + where to go + what time." The hard parts are the local spot database and local knowledge (species, techniques, bait, regulations).
Small-language countries have low-bar category bestseller charts, so a tiny subscriber base can produce a visible ranking.
Gamification features like leagues, encyclopedias, and leaderboards are inherently social-spread and short-video material.
The same playbook could be copied to Portugal, Italy, France, or Latin America (Mexico and Argentina also have few fishing apps), or applied to hobbies where weather decides whether you go out: surfing, diving, hunting, mushroom foraging. But it requires a creator in that community, which is the hardest part to replicate.

9. Uncertain

No data on Premium monthly or annual pricing, paid conversion rate, or real monthly revenue.
"19k users" is a self-reported figure from the TikTok bio, and it may count registered accounts, not active users.
Whether there's small-scale Meta or TikTok ad spend. The ad libraries only track listed advertisers, so missing hits don't rule it out.
Whether partner tackle shops pay to be listed.
The free-chart rank slid from #54 at the end of October to #11-06 (#169). That could be the autumn-winter fishing off-season (offshore water temperatures drop in Spain), or the content-driven traffic could be fading. Can't tell yet.

Sources

appstore database (chart_rank / app_day / app_profile / app_text, 2026-10-28 through 11-06); googleplay database (app_day, com.radarfish.app, 10-29 through 11-06); metaads / tiktokads databases (no hits).
iTunes lookup id=6762136018 (es, 2026-11-06); App Store page apps.apple.com/es/app/radarfish-radar-fish-de-pesca/id676213…
Málaga Hoy,2026-09-14:www.malagahoy.es/malaga/malaguenos-ramses-fernandez-miguel-c…
Website www.getradarfish.com/es
TikTok @radarfishapp and @surfcasting.los.cunaos (TikHub API, 2026-11-06); YouTube @SurfcastingLosCuñaos; Instagram @surfcasting.los.cunaos; Instagram reel www.instagram.com/reel/DanRGaeMoGO/
AppBrain:www.appbrain.com/app/radarfish-radar-fish-de-pesca/com.radar…
x-radar search for "radarfish" (120 posts in the last 0 days)

This article was written by AI from public data and the data we collect daily. Numbers are sourced, and inferences are labeled.