Consumer Apps
One-click removal of knockoff brands on Amazon
Genius startup idea Remove knockoff brands from Amazon in a click
212 startup ideas from X's best builders, sorted so you don't have to dig.
AI & Agents
Mutual Turing test game: human or LLM?
A mutual Turing test in which two entities communicate over a text channel, trying to guess if the opposite party is an LLM or a human. I wonder who’d win here! (Ironically, idea emerged during a conversation with Claude)
Hardware & Devices
At-home personalised daily newspaper printer
Ship a printer with eco-friendly ink and recycled paper that prints daily a bundle of articles and news from multiple sources that you’re expected to love. We have infinite articles in read-later list. Wouldn’t it be great to actually…
AI & Agents
Agent SaaS: sell the job done, not the tool
The best startup idea right now isn't software. It's a job. Old SaaS said: "here's a tool your team can use." Agent SaaS says: "here's a job your team never has to do again." That's the whole shift. A restaurant doesn't want dashboard…
Consumer Apps
One looks-improvement app back end, three branded front ends
Turn this idea into a $300k/mo app build 3 versions of this same app branded for different customers 1. Young dudes (15-25) looking for dates 2. Moms (30-45) + skin routine 3. Middle-aged men (35-55) + pair it with a balding version. It's…
AI & Agents
Multiplayer vibe coding inside group chats
This startup idea has been stuck in my head Prompting with friends - multi-player vibe coding in your group messages. Add your agents and tools to the message as friends. The humans jam, the agents work.
Developer Tools
Agency that finishes the last 20% of vibe-coded apps
Free startup idea a consulting agency that finishes the last 20% of vibe-coded apps
Marketplaces & Services
Upwork for AI-native talent
FREE startup idea Upwork for AI-native talent
AI & Agents
Token-efficiency consulting for AI-heavy businesses
FREE trending startup idea Token efficiency Help businesses optimize token spend, model selection, system/agent architecture. Educate employees good token hygiene and best practices. How I’d start: -Pick a vertical niche -Start as a…
AI & Agents
9 startups for a world where agents are the customer
Soon your most important customer won't be a human. It'll be an agent. 9 startups someone should build for that world: - Agent SEO agency: when agents pick the tools, you optimize to get recommended by them, not ranked on Google - Agent…
B2B & SaaS
Agency turning Google Sheets into interactive apps
Startup idea you can start for $0 an agency that turns Google sheets into interactive apps.
AI & Agents
Credit Karma for AI plugins, agents and skills
Someone build this startup please Credit Karma for AI plugins, agents, skills and code. Thousands of AI new tools live inside your browser, inbox, and code editor. Non-devs are downloading them as fast as they see them on trending on X…
AI & Agents
"Action apps": mobile apps where agents act for you
Free startup idea: There's a new category of mobile app coming: action apps. Apps where agents take action for you, instead of asking you to take action. Here's the breakdown: Human-first apps: - You open the app - You scroll the feed or…
Health & Fitness
Duolingo for posture: AirPods-powered slouch tracker
$10M/yr app idea Duolingo for posture - fix tech neck. airpods can tell when you’re slouching. build the app that runs in the background while you go about your day and gives you a real score so you can’t fake it while you’re being…
Marketplaces & Services
Directory marketplace for custom LEGO set plans
A directory marketplace for custom lego sets. How to make money: > Sell plans for $4.99 / $9.99 > Link to brickIDs for affiliate > custom kits based on image upload $49 How to get customers: > create sets with search demand/SEO > create…
B2B & SaaS
Self-hosted Postiz as AI social-media management for one SMB niche
Startup idea for you use postiz (20k+ github stars project) to sell AI social media content/management to 1 niche of SMBs. what's postiz? it's an open source social media scheduler with AI built in. basically buffer + AI and free to…
Education & Learning
The Drawing Coach: daily lessons with AI sketch critique
FREE STARTUP IDEA (steal this) The Drawing Coach A mobile app that gives you a 10-min daily drawing lesson, then AI critiques your sketch, "proportion off in the left shoulder," "shading flattens instead of rounds." Habit is the product…
B2B & SaaS
Defences against AI-powered phishing and data breaches
Vercel got hacked. Axios too. Many other companies will get hacked too. The weak link is often a human falling for phishing attack. This year we will see a massive rise in these data breaches, thanks to AI capabilities both in social…
Developer Tools
Git Trophy: 3D-printed trophy of your GitHub contribution chart
This is a cool project Git Trophy turns your GitHub chart into a 3D printed trophy for your desk. Starts at $25 for 1 year of shipping history. GitHub has 180,000,000 users. (And exploding with rise of vibe coding) Simple fun idea. I hope…
Consumer Apps
iOS app that teaches you how to pose in photos
FREE STARTUP IDEA iOS app for how to pose in photos. Why? 1. Lots of search data and intent 2. The demo is the content. Everyone gets it in 2 seconds. Short form video gets downloads. 3. Rumors that Siri will have 3rd party ai app widgets…
Research & Other
Multiplayer war-game Elo leaderboard of sovereign AI models
Here’s a semi research project that’s been on my mind for a while. Take frontier sovereign models of each country and subject them to multiplayer war games, to come up with a elo based leaderboard. This should be a wake up call for nations.
Marketplaces & ServicesLong-game
Personal dark store: 10-minute delivery of your own stored stuff
A dark store which stocks your own rarely-used household objects. You ship those occasionally-used but space occupying things and simply get them back within 10 mins from an app, whenever you need them. A minimalist’s dream service :)
Research & Other
Order rain to your exact location in 30 minutes
Startup idea: let people ORDER RAIN to their exact location under 30 minutes. who's paying for this?
AI & Agents
AI-navigated personal database of strategies saved from social media
There's so much way of coping and strategies out there on social media if we can just build up the database of specific stuffs and ability to use it at the correct time with help of AI navigating it then just imagine what great thing it…
AI & Agents
Claude Code agency for a niche industry
Free startup idea playbook you can steal 1. Pick a niche industry that has no clue about Claude code 2. Build an agency wrapper around this.
B2B & SaaS
The SaaS Canceller: find and kill unused subscriptions
FREE STARTUP IDEA (steal this) The SaaS Canceller It audits your tool stack via email, credit card statements, what your team talks about in slack and highlights untouched tools that are rotting out and stealing cash. Charge $0. Well then…
Consumer Apps
Paper "YouTube feed" for kids: QR cards, no ads, no algorithm
I stole this startup idea from a video with 453,000 views and 71,000 comments from parents. A dad built a paper YouTube feed for his daughter. She scans a QR code, the video downloads to a local server, plays with zero ads, algorithm, or…
B2B & SaaS
"Open Granola": local-first, bot-free meeting notes in markdown
Startup idea that customers are begging to buy right now. Open Granola -Same meeting capture (no bot joining calls) -macOS Native desktop app -Notes stored as markdown files. -API (not MCP) -Local-first, or privacy. - Agent-readable by…
Marketplaces & Services
Fiverr for AI agents
Startup idea: build Fiverr but for AI agents
Health & Fitness
Niche apps on an open-source all-wearables health data layer
This is a FREE startup idea gold mine. Open source project with ALL health platforms wearable data. 1. Pick your niche (gains, heart health, whatever) 2. Customize it in a wrapper (mobile app first) 3. Publish a buy button. 4. Create…
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