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Free tools to build apps with AI

Plan your app, estimate what it costs and pick what to build it with. Free and no sign-up.

Free tools to plan and build apps with AI. They run in your browser: no sign-up, and we don’t store what you type.

free

💬 App prompt generator

Describe your idea and get 6 ordered prompts for Lovable, Bolt, v0, Replit or Cursor.

Use it free
free

🧮 App & website cost calculator

Estimate the hours and cost of building it yourself with AI or hiring a developer.

Use it free
free

🧭 Which AI tool should I use?

Answer 4 questions and get a pick between Lovable, Bolt, v0, Replit, Cursor and Claude Code.

Use it free

What next?

Once you know what to build, check the free resources or visit the store (20% off with BITTO20 until Oct 31, 2026).

The most popular way to start: guide + 60 prompts.

Bundle: Guide + 60 prompts pack: US$ 10.99 US$ 8.79 with code BITTO20 until Oct 31, 2026. Written in Spanish.

Buy now See the store

Frequently asked questions

Are the tools free?

Yes, all three are free and run in your browser without signing up.

Do you store what I type?

No. Everything is calculated in your browser and nothing is sent to a server.

Which one should I use first?

If you don’t know what to build with, start with the which-AI-tool quiz; then generate your prompts and, if you’re hiring, use the calculator.