# All opportunities

> Source: https://stringers.io/en/m/ (Stringers / 什么值得做, generated 2026-11-08)
> Stringers answers one question every day: what small product can one or two people build in a few months and actually make money from. Numbers come from 15 databases we collect daily, each with source and date.
> For agents: these verdicts and the underlying databases (verified revenue, App Store / Google Play charts, ad libraries, GitHub, Product Hunt…) are queryable live over MCP — tools today / hot / products / directions / direction / data. Setup: https://github.com/komako-workshop/stringers (the user logs in at stringers.io → "配置 agent" to get a personal URL). Site index: https://stringers.io/llms.txt

> Every day, we find AI and app micro-businesses that one or two people can build and that are breaking out: who's building them, how they're taking off, and where the opening still is.

# All opportunities

**Nov 8, 2026 · Sunday · 87 opportunities** [← Stringers](https://stringers.io/en/index.md)

## **S** Breaking out 5 items

1. [AI custom-song gifts in untapped languages like Japanese, Korean, and Czech, $20 one-time, driven by Meta paid acquisition The 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](https://stringers.io/en/m/013.md)**$341k** /mo verified revenue

2. [11-05 update An AI documentary pipeline for faceless YouTube channels, $27–107/mo, a half-year business This wave only started in July. GoMotion made $88k verified in three months. Plan for 6–9 months and watch YouTube's rules.](https://stringers.io/en/m/043.md)**$196k** /mo verified

3. [Build a vertical media-generation connector for Claude / ChatGPT, sell top-up credits, get listed in the directory A solo-dev connector listed in Claude's directory hit $200k verified revenue in two months, and the vertical is still uncontested until year-end](https://stringers.io/en/m/040.md)**$158k** /mo verified revenue

4. [Update 11-08 Selling single-vertical platform data APIs to AI agents, pay-per-call, supplying aggregators first Agents want data. 9 companies with $120k/mo in verified revenue. AnyAPI went to $17k in 4 months, solo founder](https://stringers.io/en/m/039.md)**$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 money Duo'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](https://stringers.io/en/m/037.md)**$24k** /mo verified revenue

## **A** Worth a try 6 items

1. [Start by running growth for a B2B company, then productize it into a tool. Done-for-you plus subscription AEO / outbound calling service, ×3 verified revenue in a year, 17 companies over $10k MRR. Get the service to $10k/month first](https://stringers.io/en/m/047.md)**$425k** /mo verified revenue

2. [11-08 update Bookkeeping and deal-alert SaaS for pro Vinted sellers, from €29/mo Four products, one or two people each, $80k/mo verified revenue combined. Vinted Pro expanding to new countries is the next leg.](https://stringers.io/en/m/003.md)**$66k** /mo verified revenue

3. [An AI coach app for niche sports enthusiasts, $10/mo subscription, needs in-community distribution Non-coders are building with Rork to $48k and $13k verified, and niche sports are still open.](https://stringers.io/en/m/030.md)**$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 channel Existing product plus MCP listing: AdWhispr hit ×28 in a month; a weekend's work, and the directory is still new](https://stringers.io/en/m/041.md)**$29k** /mo verified revenue

5. [A paid Skill library for people with developer audiences, $9.99/mo, built around release waves Skillry makes $12k/mo solo, launching within 1-2 weeks of each model release. Build it as a wave, not a subscription](https://stringers.io/en/m/009.md)**$17k** /mo verified revenue

6. [11-06 update Make 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.](https://stringers.io/en/m/001.md)**$1–100k** /mo est.

## **B** Maybe 22 items

1. [An AI cold outreach tool for agencies, sold as a monthly subscription, provided you already have clients](https://stringers.io/en/m/068.md)**$546k** /mo verified revenue

2. [11-06 updated Open-source dev tools used for lead gen, selling hosting and license keys to developers and companies](https://stringers.io/en/m/058.md)**$78k** /mo verified revenue

3. [A collection-valuation and bookkeeping app for one hobby circle, subscription, don't build a general scanner](https://stringers.io/en/m/038.md)**$55k** /mo verified revenue

4. [Google Maps SEO tool for local shop owners in one industry, B2B monthly subscription](https://stringers.io/en/m/070.md)**$53k** /mo verified revenue

5. [Native Mac / Windows tools that replace subscriptions, $19 one-time purchase, need an audience](https://stringers.io/en/m/050.md)**$49k** /mo verified revenue

6. [Guest room booking and payment for destination wedding couples, subscription plus 5% commission](https://stringers.io/en/m/045.md)**$27k** /mo verified revenue

7. [11-07 updates Lock-screen Japanese vocab widget for learners. Widget is free, content is subscription.](https://stringers.io/en/m/022.md)**$14k** /month verified revenue

8. [A Windows taskbar-replacement Dock, $6–10 one-time purchase, acquiring users via TikTok](https://stringers.io/en/m/088.md)**$3,500** /mo verified revenue

9. [Updated 11-08 Exam prep courses for working adults getting niche licenses, one-time purchase, built with instructors](https://stringers.io/en/m/069.md)**$581k** /mo est.

10. [Ride-hailing fare calculator for countries without a local version yet. Driver subscription, needs a driver channel](https://stringers.io/en/m/027.md)**$183k/mo** est.

11. [Learning app co-built with teachers of niche languages, hard paywall, annual subscription](https://stringers.io/en/m/021.md)**$8.5–145k** /mo est.

12. [Set up checkout rules for Shopify B2B / Plus merchants, from $15/mo plus manual setup](https://stringers.io/en/m/061.md)**$99k** /mo est.

13. [Updated 11-08 Hidden-job aggregator for industries hiring for private-domain marketing, ~$27/mo subscription](https://stringers.io/en/m/044.md)**$5.3–56k** /mo est.

14. [Single-symptom chronic-condition apps like migraine and neck pain, annual subscription, growing through store search](https://stringers.io/en/m/067.md)**$56k** /mo est.

15. [Cleaning app for ADHD users that breaks chores into steps from a photo, weekly subscription, needs Google paid acquisition skills](https://stringers.io/en/m/025.md)**$1.8–48k** /mo est.

16. [A sealed-records app for divorcing parents, $17.99/mo, needs paid acquisition skills or a lawyer channel](https://stringers.io/en/m/024.md)**$1.5–40k** /mo est.

17. [Take a US-proven consumer App to a non-English market you know, with local subscriptions](https://stringers.io/en/m/019.md)**$38k** /mo est.

18. [Image-to-SVG and other converter tools for Cricut and laser users. Subscription, built for a year, then sold](https://stringers.io/en/m/071.md)**$30k** /mo est.

19. [Updated 11-08 An iPhone remote for Google TV owners, with one-tap ad clearing as the paid feature](https://stringers.io/en/m/002.md)**$7,200–8,300** /mo est.

20. [Add a ChatGPT Ads pixel for existing pixel apps or paid-acquisition agencies, $10–49/mo](https://stringers.io/en/m/059.md)**$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.](https://stringers.io/en/m/062.md)**$3,500–6,000** /mo est.

22. [11-08 updated Local companion app for people paying out of pocket for weight-loss shots. Subscription, only in countries without a local version.](https://stringers.io/en/m/018.md)Can't estimate

## **C** Worth studying 26 entries

1. [AI betting tip and auto-trading bots (excluding US/Canada betting research tools)](https://stringers.io/en/m/084.md)**$119k** /mo verified revenue

2. [Paid plugins on platforms with an official plugin marketplace. Monthly subscription, one person, 3–4 years.](https://stringers.io/en/m/046.md)**$75k** /mo verified revenue

3. [11-08 updated General AI selfie / photo retouch / video generation app, $7–15 weekly subscription](https://stringers.io/en/m/078.md)**$66k** /mo verified revenue

4. [11-08 updated Copy-trading execution tool for Polymarket / Kalshi users, revenue share on trades](https://stringers.io/en/m/020.md)**$40k** /mo verified revenue

5. [General Shopify AI customer service, free from Shopify itself. 600 rivals have shown up in one year.](https://stringers.io/en/m/063.md)**$34k** /mo verified revenue

6. [Cross-assistant search and local backup extension for AI chat platforms, $99–199 one-time purchase](https://stringers.io/en/m/042.md)**$26k** /mo verified revenue

7. [11-08 updated Push-to-talk dictation for Mac aimed at a narrow crowd. Subscription or one-time purchase, tops out at a few thousand a month.](https://stringers.io/en/m/073.md)**$26k** /mo verified revenue

8. [Sell a one-off waiting reminder as an annual plan, and build two-sided matching from day one](https://stringers.io/en/m/086.md)**$25k** /mo verified revenue

9. [11-07 updated “Read scripture first, unlock later” app for people with access to faith communities. Annual subscription.](https://stringers.io/en/m/016.md)**$13k** /mo verified revenue

10. [11-07 updated OpenClaw hosting and one-click deploy. Revenue fell 90% in nine months, don't build.](https://stringers.io/en/m/007.md)**$6,679** /mo verified revenue

11. [Touchscreen Mac adaptation for people with an existing iPad app, feature update](https://stringers.io/en/m/006.md)**$526** /mo verified revenue

12. [AI English speaking coach for Korean and Japanese learners, built around how locals learn. Subscription, needs a local hook.](https://stringers.io/en/m/023.md)**$156–1.67M** /mo est.

13. [Niche fitness coach app for Spanish-speaking markets, hard paywall subscription, needs a Spanish content account](https://stringers.io/en/m/035.md)**$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](https://stringers.io/en/m/032.md)**$20.4–404k** /mo est.

15. [Pay-per-article AI SEO writing and launch directory sites, sold to indie devs](https://stringers.io/en/m/083.md)**$344k** /mo est.

16. [11-08 updated AI weekly meal plans for Spanish and Portuguese speakers, with real supermarket prices, $9.99/mo](https://stringers.io/en/m/017.md)**$250k** /mo est.

17. [Benefits checklist app for specific groups who already have their own channels, hard paywall subscription](https://stringers.io/en/m/026.md)**$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.](https://stringers.io/en/m/014.md)**$103k** /mo est.

19. [AI mod preview tool for car customization shops, B2B monthly fee, skip the car owner side](https://stringers.io/en/m/029.md)**$3.4–94k** /mo est.

20. [11-08 updated All-day recording for people who already have a watchOS audio app, $9.99 one-time purchase](https://stringers.io/en/m/011.md)**$2.1–68k** /mo est.

21. [Turn WhatsApp chat exports into archivable records sold to adults for small payments](https://stringers.io/en/m/034.md)**$31k** /mo est.

22. [Alert tool for retail traders that gives no advice. Annual subscription, judged over five years.](https://stringers.io/en/m/072.md)**$30k** /mo est.

23. [11-08 updated Steam wishlist rank alerts for game devs, subscription, validate your audience first](https://stringers.io/en/m/053.md)**$1,100–3,100** /mo est.

24. [Shopify ChatGPT visibility app. Merchants can't verify it, so renewals don't come in.](https://stringers.io/en/m/065.md)**$2,400** /mo rough est.

25. [Free skill repo as a funnel for teams with paid APIs / SaaS. Revenue unverified.](https://stringers.io/en/m/049.md)**22k stars** open source

26. [Ear-training mini tool for music learners, $7.99/week hard paywall, you need to run Meta paid acquisition](https://stringers.io/en/m/033.md)Can't estimate

## **D** Long shot 17 entries

1. [General-purpose link-in-bio page, subscriptions won't stick at $7/mo](https://stringers.io/en/m/082.md)**$34k** /mo verified revenue

2. [11-08 updated General Mac notch app. Open source drove the price to zero, and Apple reclaimed the Dynamic Island.](https://stringers.io/en/m/005.md)**$13k** /mo verified revenue

3. [11-08 updated Open-source personal agent for audiences, traded for stars and emails. Hosted subscriptions struggle to make money.](https://stringers.io/en/m/055.md)**$6,314** /mo verified revenue

4. [11-07 updated Skip hobby-community coin-shell apps. Annual subscriptions for interest tutorials only work for paid-acquisition teams.](https://stringers.io/en/m/077.md)**$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.](https://stringers.io/en/m/031.md)**$250k** /mo est.

6. [General MoR payments for indie devs. Regional versions are already taken.](https://stringers.io/en/m/081.md)**$192k** /mo est.

7. [General AR tracing / drawing-learning app: installs go to the app factories, revenue goes to the top weekly subscriptions](https://stringers.io/en/m/028.md)**$150k** /mo est.

8. [11-08 updated Google Play palm reading and party games, driven by paid acquisition and interstitials. Small teams shouldn't chase it.](https://stringers.io/en/m/008.md)**$1.4–109k** /mo est.

9. [Synonym and SKU matching add-on for Shopify's native search. Monthly subscription, only works for established teams.](https://stringers.io/en/m/060.md)**$0.4–50k** /mo est.

10. [11-08 updated IPTV players, in-car video, VPN, small-loan apps](https://stringers.io/en/m/076.md)**$50k** /mo est.

11. [Building a Shopify compliance app for the EU's next regulatory deadline, free tier plus subscription. Hold off for now.](https://stringers.io/en/m/064.md)**$1–36k** /mo est.

12. [Local bookkeeping apps for European languages, €2–5/mo subscription, need to run native-language TikTok](https://stringers.io/en/m/036.md)**$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.](https://stringers.io/en/m/052.md)**$0.6–11k** /mo est.

14. [11-08 updated Unlock-and-add-features tools for head units and Android owners, one-time purchase. One system update could wipe it out.](https://stringers.io/en/m/057.md)**$5,600** /mo est.

15. [Free anti-AI-tone skill as a funnel for people with paid products. The skill itself charges nothing.](https://stringers.io/en/m/048.md)**270k stars** open source

16. [Free DeepSeek Harness plugin as a funnel for teams with paid products. The plugin charges nothing.](https://stringers.io/en/m/010.md)**107k stars** open source

17. [11-08 updated Open-source, sourced knowledge base for one field, making money through publishing, licensing and traffic](https://stringers.io/en/m/054.md)**80k stars** open source

## **E** Not promising 11 entries

1. [Uncensored model API and adult AI companion subscriptions. Card payment channels can cut off anytime.](https://stringers.io/en/m/085.md)**$63k** /mo verified revenue

2. [Updated 11-08 A multi-open shell and token saver for coding agent users, $3–40/mo](https://stringers.io/en/m/080.md)**$8,768** /mo verified

3. [Claude Code usage monitors and phone remote tools: flooded with free open-source versions, skip](https://stringers.io/en/m/004.md)**$5,776** /mo verified revenue

4. [AI coding extensions and MCP security scanners: big vendors give them away free, individuals won't pay](https://stringers.io/en/m/012.md)**$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](https://stringers.io/en/m/074.md)**$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.](https://stringers.io/en/m/075.md)**$2.82M** /mo est.

7. [Shopify bundle upsell, AI product image and WhatsApp bulk-send apps: crowded, don't enter](https://stringers.io/en/m/066.md)**$35.8–375k** /mo est.

8. [Mac clipboard, screen recording, menu bar and notch tools: only make money in the launch month](https://stringers.io/en/m/051.md)**$180k** /mo est.

9. [Open-source libraries that run new models locally on hardware nobody covers yet: you collect stars and reputation, not money](https://stringers.io/en/m/056.md)**107k stars** open source

10. [Updated 11-08 Relies on game ports, crack reverse proxies, star-bait and copycat names to collect stars and downloads](https://stringers.io/en/m/079.md)**73k stars** open source

11. [EU Shopify withdrawal-button app: the deadline has passed, top spots are full, don't build it](https://stringers.io/en/m/015.md)Can't estimate