SBreaking out5 items

1. AI custom-song gifts in untapped languages like Japanese, Korean, and Czech, $20 one-time, driven by Meta paid acquisitionThe money is the hardest in its category: GOTOIT hit $2.66M in verified revenue over 8 months on Stripe, and a solo-dev German-store app also has verified revenue. Almost nobody bids on Japanese, Korean, or Czech, ahead of 2-14 Valentine's Day$341k/mo verified revenue
2. 11-05 updateAn AI documentary pipeline for faceless YouTube channels, $27–107/mo, a half-year businessThis wave only started in July. GoMotion made $88k verified in three months. Plan for 6–9 months and watch YouTube's rules.$196k/mo verified
3. Build a vertical media-generation connector for Claude / ChatGPT, sell top-up credits, get listed in the directoryA solo-dev connector listed in Claude's directory hit $200k verified revenue in two months, and the vertical is still uncontested until year-end$158k/mo verified revenue
4. Update 11-08Selling single-vertical platform data APIs to AI agents, pay-per-call, supplying aggregators firstAgents want data. 9 companies with $120k/mo in verified revenue. AnyAPI went to $17k in 4 months, solo founder$85k/mo verified revenue
5. Back-in-stock alerts for US and UK buyers hunting sold-out items, $10/mo, but it's really one-time moneyDuo's out-of-stock + year-end peak, $24k verified revenue per person in 10 days; single-product sites, grab it by the day and cash out$24k/mo verified revenue

AWorth a try6 items

1. Start by running growth for a B2B company, then productize it into a tool. Done-for-you plus subscriptionAEO / outbound calling service, ×3 verified revenue in a year, 17 companies over $10k MRR. Get the service to $10k/month first$425k/mo verified revenue
2. 11-08 updateBookkeeping and deal-alert SaaS for pro Vinted sellers, from €29/moFour products, one or two people each, $80k/mo verified revenue combined. Vinted Pro expanding to new countries is the next leg.$66k/mo verified revenue
3. An AI coach app for niche sports enthusiasts, $10/mo subscription, needs in-community distributionNon-coders are building with Rork to $48k and $13k verified, and niche sports are still open.$61k/mo verified
4. Add an MCP endpoint to your paid product and list it in the Claude directory, use it as a price-raise reason, not a channelExisting product plus MCP listing: AdWhispr hit ×28 in a month; a weekend's work, and the directory is still new$29k/mo verified revenue
5. A paid Skill library for people with developer audiences, $9.99/mo, built around release wavesSkillry makes $12k/mo solo, launching within 1-2 weeks of each model release. Build it as a wave, not a subscription$17k/mo verified revenue
6. 11-06 updateMake the open-close motion itself the game: a $3 toy on iPhone Duo, can it still catch up?Duo has been out for two weeks, and one individual toy is already in the top 20 of the US Top Paid chart. It can take off on X videos and media compilations. Revenue is only around ten thousand, and the window closes at the end of December.$1–100k/mo est.

BMaybe22 items

1. An AI cold outreach tool for agencies, sold as a monthly subscription, provided you already have clients$546k/mo verified revenue
2. 11-06 updatedOpen-source dev tools used for lead gen, selling hosting and license keys to developers and companies$78k/mo verified revenue
3. A collection-valuation and bookkeeping app for one hobby circle, subscription, don't build a general scanner$55k/mo verified revenue
4. Google Maps SEO tool for local shop owners in one industry, B2B monthly subscription$53k/mo verified revenue
5. Native Mac / Windows tools that replace subscriptions, $19 one-time purchase, need an audience$49k/mo verified revenue
6. Guest room booking and payment for destination wedding couples, subscription plus 5% commission$27k/mo verified revenue
7. 11-07 updatesLock-screen Japanese vocab widget for learners. Widget is free, content is subscription.$14k/month verified revenue
8. A Windows taskbar-replacement Dock, $6–10 one-time purchase, acquiring users via TikTok$3,500/mo verified revenue
9. Updated 11-08Exam prep courses for working adults getting niche licenses, one-time purchase, built with instructors$581k/mo est.
10. Ride-hailing fare calculator for countries without a local version yet. Driver subscription, needs a driver channel$183k/mo est.
11. Learning app co-built with teachers of niche languages, hard paywall, annual subscription$8.5–145k/mo est.
12. Set up checkout rules for Shopify B2B / Plus merchants, from $15/mo plus manual setup$99k/mo est.
13. Updated 11-08Hidden-job aggregator for industries hiring for private-domain marketing, ~$27/mo subscription$5.3–56k/mo est.
14. Single-symptom chronic-condition apps like migraine and neck pain, annual subscription, growing through store search$56k/mo est.
15. Cleaning app for ADHD users that breaks chores into steps from a photo, weekly subscription, needs Google paid acquisition skills$1.8–48k/mo est.
16. A sealed-records app for divorcing parents, $17.99/mo, needs paid acquisition skills or a lawyer channel$1.5–40k/mo est.
17. Take a US-proven consumer App to a non-English market you know, with local subscriptions$38k/mo est.
18. Image-to-SVG and other converter tools for Cricut and laser users. Subscription, built for a year, then sold$30k/mo est.
19. Updated 11-08An iPhone remote for Google TV owners, with one-tap ad clearing as the paid feature$7,200–8,300/mo est.
20. Add a ChatGPT Ads pixel for existing pixel apps or paid-acquisition agencies, $10–49/mo$1,500–8,000/mo est.
21. Local logistics integration for Shopify merchants in Central, Eastern and Southern Europe. Monthly subscription, you have to live there.$3,500–6,000/mo est.
22. 11-08 updatedLocal companion app for people paying out of pocket for weight-loss shots. Subscription, only in countries without a local version.Can't estimate

CWorth studying26 entries

1. AI betting tip and auto-trading bots (excluding US/Canada betting research tools)$119k/mo verified revenue
2. Paid plugins on platforms with an official plugin marketplace. Monthly subscription, one person, 3–4 years.$75k/mo verified revenue
3. 11-08 updatedGeneral AI selfie / photo retouch / video generation app, $7–15 weekly subscription$66k/mo verified revenue
4. 11-08 updatedCopy-trading execution tool for Polymarket / Kalshi users, revenue share on trades$40k/mo verified revenue
5. General Shopify AI customer service, free from Shopify itself. 600 rivals have shown up in one year.$34k/mo verified revenue
6. Cross-assistant search and local backup extension for AI chat platforms, $99–199 one-time purchase$26k/mo verified revenue
7. 11-08 updatedPush-to-talk dictation for Mac aimed at a narrow crowd. Subscription or one-time purchase, tops out at a few thousand a month.$26k/mo verified revenue
8. Sell a one-off waiting reminder as an annual plan, and build two-sided matching from day one$25k/mo verified revenue
9. 11-07 updated“Read scripture first, unlock later” app for people with access to faith communities. Annual subscription.$13k/mo verified revenue
10. 11-07 updatedOpenClaw hosting and one-click deploy. Revenue fell 90% in nine months, don't build.$6,679/mo verified revenue
11. Touchscreen Mac adaptation for people with an existing iPad app, feature update$526/mo verified revenue
12. AI English speaking coach for Korean and Japanese learners, built around how locals learn. Subscription, needs a local hook.$156–1.67M/mo est.
13. Niche fitness coach app for Spanish-speaking markets, hard paywall subscription, needs a Spanish content account$840k/mo est.
14. Co-branded iOS filter camera with a color-grading creator, ₩3,300 / ¥15 one-time purchase, sold in Korea, China and Taiwan$20.4–404k/mo est.
15. Pay-per-article AI SEO writing and launch directory sites, sold to indie devs$344k/mo est.
16. 11-08 updatedAI weekly meal plans for Spanish and Portuguese speakers, with real supermarket prices, $9.99/mo$250k/mo est.
17. Benefits checklist app for specific groups who already have their own channels, hard paywall subscription$8–200k/mo est.
18. Class action settlement finder app. The US store is an influencer business; add Australia and there's no money to claim.$103k/mo est.
19. AI mod preview tool for car customization shops, B2B monthly fee, skip the car owner side$3.4–94k/mo est.
20. 11-08 updatedAll-day recording for people who already have a watchOS audio app, $9.99 one-time purchase$2.1–68k/mo est.
21. Turn WhatsApp chat exports into archivable records sold to adults for small payments$31k/mo est.
22. Alert tool for retail traders that gives no advice. Annual subscription, judged over five years.$30k/mo est.
23. 11-08 updatedSteam wishlist rank alerts for game devs, subscription, validate your audience first$1,100–3,100/mo est.
24. Shopify ChatGPT visibility app. Merchants can't verify it, so renewals don't come in.$2,400/mo rough est.
25. Free skill repo as a funnel for teams with paid APIs / SaaS. Revenue unverified.22k stars open source
26. Ear-training mini tool for music learners, $7.99/week hard paywall, you need to run Meta paid acquisitionCan't estimate

DLong shot17 entries

1. General-purpose link-in-bio page, subscriptions won't stick at $7/mo$34k/mo verified revenue
2. 11-08 updatedGeneral Mac notch app. Open source drove the price to zero, and Apple reclaimed the Dynamic Island.$13k/mo verified revenue
3. 11-08 updatedOpen-source personal agent for audiences, traded for stars and emails. Hosted subscriptions struggle to make money.$6,314/mo verified revenue
4. 11-07 updatedSkip hobby-community coin-shell apps. Annual subscriptions for interest tutorials only work for paid-acquisition teams.$690k/mo est.
5. Porting a Korean doujin commission platform to Japan and Taiwan. Each market has established players; one person can't pull it off.$250k/mo est.
6. General MoR payments for indie devs. Regional versions are already taken.$192k/mo est.
7. General AR tracing / drawing-learning app: installs go to the app factories, revenue goes to the top weekly subscriptions$150k/mo est.
8. 11-08 updatedGoogle Play palm reading and party games, driven by paid acquisition and interstitials. Small teams shouldn't chase it.$1.4–109k/mo est.
9. Synonym and SKU matching add-on for Shopify's native search. Monthly subscription, only works for established teams.$0.4–50k/mo est.
10. 11-08 updatedIPTV players, in-car video, VPN, small-loan apps$50k/mo est.
11. Building a Shopify compliance app for the EU's next regulatory deadline, free tier plus subscription. Hold off for now.$1–36k/mo est.
12. Local bookkeeping apps for European languages, €2–5/mo subscription, need to run native-language TikTok$0.6–18k/mo est.
13. Mac tool that turns hardware data into plain language. Open source plus one-time purchase; treat it as a portfolio piece, not a business.$0.6–11k/mo est.
14. 11-08 updatedUnlock-and-add-features tools for head units and Android owners, one-time purchase. One system update could wipe it out.$5,600/mo est.
15. Free anti-AI-tone skill as a funnel for people with paid products. The skill itself charges nothing.270k stars open source
16. Free DeepSeek Harness plugin as a funnel for teams with paid products. The plugin charges nothing.107k stars open source
17. 11-08 updatedOpen-source, sourced knowledge base for one field, making money through publishing, licensing and traffic80k stars open source

ENot promising11 entries

1. Uncensored model API and adult AI companion subscriptions. Card payment channels can cut off anytime.$63k/mo verified revenue
2. Updated 11-08A multi-open shell and token saver for coding agent users, $3–40/mo$8,768/mo verified
3. Claude Code usage monitors and phone remote tools: flooded with free open-source versions, skip$5,776/mo verified revenue
4. AI coding extensions and MCP security scanners: big vendors give them away free, individuals won't pay$1,492/mo verified revenue
5. Short-drama apps: the money goes to content licensing, dubbing and nine-figure paid acquisition, small teams shouldn't chase it$69.9M/mo est.
6. Updated 11-08 Family location, phone cleanup and deleted-message recovery: weekly-subscription wrapper apps that make money from paid acquisition and misleading ads. Skip.$2.82M/mo est.
7. Shopify bundle upsell, AI product image and WhatsApp bulk-send apps: crowded, don't enter$35.8–375k/mo est.
8. Mac clipboard, screen recording, menu bar and notch tools: only make money in the launch month$180k/mo est.
9. Open-source libraries that run new models locally on hardware nobody covers yet: you collect stars and reputation, not money107k stars open source
10. Updated 11-08 Relies on game ports, crack reverse proxies, star-bait and copycat names to collect stars and downloads73k stars open source
11. EU Shopify withdrawal-button app: the deadline has passed, top spots are full, don't build itCan't estimate