Real AI agent use cases, with sources and setup prompts

How to build an iPhone or Android app with AI

Mobile apps people shipped by talking to coding agents, including the review, testing and App Store steps. 12 matching use cases below, each with a public source.

Looking for something else? Search all 954 use cases or .

Get started in 3 steps

  1. Start with one screen and one job the app must do; let the agent pick the stack (Swift, React Native or Expo) and explain why.
  2. Test on a real phone early; simulators can miss crashes, permission prompts and layout bugs, and several builders below test on real devices.
  3. Read Apple's and Google's review rules before you submit, and add a pre-submit checklist your agent runs every time.

Common questions

Which AI tools do people use to build an iPhone or Android app?
Across the 12 sourced use cases in this guide, the most used tools are Claude Code, Hermes Agent, Android, Android USB debugging, Antigravity.
How much does it cost to get started?
3 of the 12 use cases can start on a free plan. The most common paid starting price is $17/mo (6 use cases). Prices come from each tool's official pricing page.
How long does setup take?
4 of the 12 use cases list a setup time of an hour or less. Each card shows the setup time the builder reported.
Are these real examples?
Yes. Every use case links to its public source (an X post, a Hacker News thread or a GitHub repo) with the author and date, so you can check it yourself.

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