During the Pokémon 30th anniversary pack-opening craze, a small Turkish studio reskinned its sports card app

TCG Card Scanner - Stash is an app that scans Pokémon cards and tells you what they're worth. It launched 7 weeks ago, has 122 ratings in the US store, and reached the top of the Reference Top Grossing charts in Ireland, Hong Kong, and Poland. There's nothing new in it. Troodon, the Turkish studio behind it, used the same template half a year ago to ship a sports card scanner app, then swapped "sports cards" for "Pokémon cards" and shipped again. About 150 similar apps have launched in this space since May. What's worth taking is the copying method, not the product.

A card it misidentified as a 2005 card

In 2026 Sep 16, Pokémon Trading Card Game released its 30th-anniversary expansion, "30th Celebration" (Pokémon official site), made entirely of holo cards. Two days later, on Sep 18, Stash listed it.

On Nov 3, a US user left a one-star review on the App Store: "The first card I scanned was from the 30 2026 anniversary set, and it labeled it as a 2005 card. It even got the Pokémon name wrong, lol. Uninstalled." The same day, another one-star review said it "values your cards using eBay listings, and those listings often aren't even the same card." Earlier, an Oct 14 review spelled out the price: "They charge you 13 dollars a week! There are plenty of free options. Don't buy it."

Even with an app that misidentifies cards and charges $13 a week, its US rating still climbs by 4 to 5 a day. The reason is the studio behind it.

What it is

Point the camera at a physical card and the app identifies it, gives an estimated market price, adds it to your digital collection, and shows how your total collection value changes over time. The first line of the store description is "Scan. Value. Collect." The website stashtcg.app also says "Ask AI anything about your cards." English only.

The app is free to download, but a subscription wall appears after a few scans. One five-star review from Oct 4 had a title that read: "The trial works, so use it while you can." The version has been stuck at 1.2 (Sep 30), with no updates since.

It's a reskin

Troodon's full name is TROODON YAZILIM TEKNOLOJI REKLAM HIZMETLERI…, a Turkish company ("REKLAM" means advertising). It has three apps on the App Store: a heart rate monitor (2024-10), Sports Card Scanner - Cardora (2026-05-08), and Stash.

The two card apps follow the same naming formula: "category keyword + short brand." Stash's terms of service on its website say, "The App allows users to: Scan sports cards using the device camera." It scans Pokémon cards, but the terms are still the sports card version. Nobody updated them.

Cardora got there first: US store 893 ratings (iTunes, 11-06), #40 in the US Sports Top Grossing. The screen-capture site screensdesign recorded its whole flow: a tracking-consent prompt on launch, a few feature intro pages, asking whether you're a beginner or a pro and which card types you collect, then birthday, gender and email, a progress bar that runs to 100%, and a "weekly subscription, free trial first" paywall. The page's estimated revenue for Cardora reads $100k in the list summary and "$260k/mo" in the page title (11-06). Same site, two numbers, both third-party estimates.

Stash takes that exact playbook and applies it to Pokémon and MTG.

How big the numbers are

Take these numbers with a grain of salt. The US store gets four or five ratings a day; at typical rating rates that implies a few hundred downloads a day (inferred). The Reference Top Grossing bar in small countries is low: a $13 weekly subscription only needs a few sales to reach the top 100, and those stores have no local ratings at all. It shows the app is taking money, not how much.

Where the traffic comes from

First, store search. The title starts with "TCG Card Scanner", which captures that search term. In the US store, "stash tcg" puts 11-06 at #2 and "stash" at #4 (iTunes search).

Second, a smart category choice. It didn't go into the crowded Utilities or Entertainment categories; it went into Reference. People see it at #70 on that category's free chart, and a handful of sales is enough to push it up the paid chart.

Third, it caught a wave of unboxing. The 30 anniversary set launched in Sep 16, and the first question after pulling a pack is "what's this card worth?" The question is instant, frequent, and asked on a phone. The main box product of this set just launched (per TCGplayer's buying guide, Nov 6), so the demand should run through to Christmas.

Fourth, it collided with a name twin. Another developer, Verified Studios, launched "Stash - TCG Price Tracker" in June. It has only 9 US ratings, but several TikTok accounts post about it daily, with bios saying "download Stash on the App Store." When users search "Stash TCG," the #2 result is Troodon's app, which has more ratings. Most of these videos get a few hundred views, so it's impossible to tell how much traffic gets siphoned off, and there's no way to confirm whether Troodon knew the other app existed when naming theirs.

Fifth, possible paid acquisition, no evidence found. Troodon's website says "after launch we'll use targeted marketing to scale," and the company name includes "reklam" (advertising). But no public Meta ad records tie to either app, and Apple Search Ads can't be checked from outside. Ratings climb steadily every day with no spikes, which looks more like steady search and bidding traffic than one viral video (inferred).

One more thing stands out: recent five-star reviews are very short ("Fast and easy", "Mint condition", "Mew ex"), like people tapping through while rating after scanning a card. Cardora's screenshots do show a rating popup beneath the valuation result page. The one-star reviews are all long sentences about misidentification, wrong valuations, and high prices.

Who it's competing with

There's also Google Lens and the eBay app's photo search: free, and they can recognize cards, but they don't give valuation ranges or collection sets.

The timeline for this niche is clear: HoloDex and FoilSnap appeared in the fall of 2025, and copycats flooded in from May 2026, with Troodon copying the sports cards first and then Pokémon. Stash isn't anyone's prototype; it is itself a second-wave copy.

What users are complaining about

The one-star reviews focus on two things.

Misidentification. "Scanned several cards in version one and it got none right" (10-31, two stars), "it misidentifies as often as it gets it right, don't pay for an app this inconsistent" (10-31, one star), plus the card at the top that got read as a 2005 30 anniversary card.

Wrong valuations, too expensive. "It prices off eBay listings, and those listings often aren't even the same card" and "13 dollars a week when plenty of free options exist."

These two complaints are exactly the moats of the established players: TCGplayer has its own sale prices, Collectr has a full card database, and Rare Candy's scanning is free outright. A thin-wrapper app can't win on either point, so it has to earn back its cost through search placement and subscription pricing.

If it were you

C: You can learn a replicable playbook, but don't go after Pokémon card scanning. The niche has a leader with 69k ratings, a free-scanning trading platform, an early factory-made entrant a year ahead, and 150 new look-alikes since May. Stash is itself a copycat, and its volume rests on the studio having already run this playbook once.

Who it suits: small studios that already run a "recognize + value + collect + weekly subscription" app and can reskin and ship in a few weeks, or people who know a specific niche collectible well and have a reliable source of price data.

Who it doesn't suit: anyone starting from scratch on Pokémon, MTG, or sports card scanning. You'd be up against free TCGplayer, the most complete Collectr database, and over a hundred same-template apps. People without a price data source who try to build valuations from eBay listings will see it in the one-star reviews.

How to do it: follow Troodon's path and move to a collectible category the template hasn't saturated yet: coins, stamps, K-pop photocards, figurines, vinyl, sneakers. First confirm the category has usable price data (auction sale records, dedicated price sites), then build. Title it "category + Scanner + short brand," put it in a low-barrier category, and show the paywall and rating prompt at the moment a scan returns a result. Recognition accuracy is the only place you can truly separate yourself from others, so test it on a hundred real cards (or real coins) before you ship.

How to acquire users: build on store search, and fight for the category keywords in your title and subtitle. Ride the category's own moments (new set releases, anniversaries, big auctions), the way Stash did by shipping within days of a new set's launch. Whether to pay for installs depends on payback: the higher the weekly price, the more you can afford to bid on Apple Search Ads.

How early you need to be: the Pokémon unboxing wave runs until Christmas. If you pick a different category, time the window to that category's own peaks, not Pokémon's.

What would show this read was wrong: ① if Stash's US rating count isn't over 300 by late December, or it drops out of the top 150 on Reference Top Free, that means the reskinned app can't even hold this level of volume, and the copy-it playbook pays off less than it looks; ② conversely, if Troodon launches a third app (say coin or sneaker scanning) and catches Stash's volume within two months, the "template × category" path is still open and worth grabbing the next category; ③ if Collectr or TCGplayer moves recognition and valuation into the free tier, or Google Lens starts giving valuations directly, every paid thin-wrapper scanner gets harder at once.

Sources

App Store storefront pages, ratings, and charts for the US and other stores (2026-10-28 to 11-06); public App Store US reviews (2026-10-04 to 11-04); the stashtcg.app website and terms of service, and troodon.studio; screensdesign's screen captures and revenue estimate for Cardora (11-06, third-party estimate); Pokémon's official site and TCGplayer's release info for the 30th Celebration; the TikTok profile pages of accounts promoting Verified Studios' "Stash." Anything marked "inferred" is an inference; Apple does not publish downloads or revenue.