Updated 15 Oct 2026
Best AI stack for a mobile app (no coding needed)
An iPhone/Android app, such as a habit tracker, community or fitness app. Here is the stack we recommend for a first-time, non-technical builder.
| Role | Tool & why | Price |
|---|---|---|
| Builder | Bolt.new Can scaffold Expo (React Native) mobile apps from a prompt and preview them on your phone. | Free; Pro $25/mo |
| Database | Firebase Google's backend built for mobile, with realtime sync and offline support. | Free Spark plan |
| Login | Firebase Authentication Google/Apple/email sign-in in a few clicks. | Free (SMS billed) |
| Payments | Stripe For services; note app stores require their own in-app purchase for digital goods. | 2.9% + 30c |
| Analytics | PostHog Understand retention. | Free tier |
Estimated cost at launch
~$26/mo + store fees
Assumes free tiers for database and hosting at launch, about $1/mo for a domain, and payment fees only when you sell.
Copy-paste starter prompt
Build a mobile habit-tracker app with Expo. Users sign in with Google via Firebase Auth, create daily habits, tick them off, and see a weekly streak chart. Store data in Firestore. Simple, friendly design with large tap targets.
Build steps
- Write a one-paragraph spec and list the 3 must-have screens.
- Paste the starter prompt into your builder and get a clickable first version.
- Connect the database and add realistic sample data.
- Add sign-up/login and test with two accounts.
- Add payments in test mode and do a full test purchase.
- Publish and connect a custom domain.
- Get 5 real users, fix where they get stuck, then launch.
Personalise this stack for my idea →
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Prices checked on official pricing pages on 15 Oct 2026; confirm before buying. Some links may be affiliate links.