How to Build and Sell Apps with AI Tools

AI tools now write most of the code behind small apps. A solo builder can ship a working web or mobile app in days. Building is no longer the hard part. Picking the right problem and winning paying users is.

Build what people will pay for, not what is fun to make.

• A frequent task people dislike doing
• A problem that drains their money or time
• A group you know well or belong to
• Evidence that people already pay for a weaker fix

• Interview ten potential users
• Put up a simple landing page with a waitlist
• Invite people to pre-order or join a paid beta
• Mine competitors’ reviews for complaints you can fix

Lovable or Bolt

Build web apps through chat, with no coding required

Replit

Build and host apps in your browser with an AI agent

Claude Code or OpenAI Codex

Coding agents that give more control over bigger apps

Cursor

An AI code editor for builders who want to see the code

Expo with a coding agent

Mobile apps for iPhone and Android

I am building [app] for [users] to solve [problem]. List the smallest feature set for a paid first version, the screens, the data we store, and what to cut. Limit it to one core feature.

• Begin with the single core feature
• Add sign-in only when you need accounts
• Test each step before you add the next
• Use git or version history so you can roll back mistakes
• Have the AI explain anything you do not follow

Web apps

Stripe, Paddle, or Lemon Squeezy, for subscriptions and one-off payments

Mobile apps

Apple and Google in-app purchases, often run through RevenueCat or Superwall

Run payments in test mode before you go live.

• Keep API keys out of front-end code
• Audit sign-in, data access, and permissions
• Back up your database
• Have an AI agent review the code for security issues, then verify what it finds
• Test on real devices and in real browsers

• Charge from day one, even if it is a small amount
• Offer both monthly and yearly plans
• Offer a free trial or a free plan with clear limits
• Raise prices as the app gets better

• Launch on Product Hunt and in communities and directories
• Share build-in-public updates on social media
• Publish useful content about the problem you solve
• Request reviews and referrals from early users
• Apply app store search optimization to mobile apps

• Post a privacy policy and terms of service
• Meet Apple and Google rules for mobile apps
• Respect copyrights and trademarks
• Handle refunds and cancellations transparently

• Fix bugs fast
• Talk to users weekly
• Track revenue, churn, and costs monthly
• Watch your AI and hosting bills closely
• Add features only when users request them