AI app building tools

How to choose

• If you want to build a web app by chatting: Lovable — watch out: credit-based pricing can be hard to predict.
• If you want to prototype an app in the browser: Bolt — watch out: usage limits on free tier.
• If you want to generate React/Next.js UI: v0 by Vercel — watch out: tied to the Vercel ecosystem.
• If you want to build an app with an AI agent: Replit — watch out: agent output is probabilistic (stated on page).
• If you want to full-stack app in the browser: Firebase Studio — watch out: backend costs follow Firebase/Google Cloud pricing.
• If you want to generate sitemap and wireframes: Relume — watch out: focused on marketing sites.
• If you want to add a database to an app: Supabase — watch out: free projects have limits.
• Starting free: Lovable, Bolt, v0 by Vercel, Firebase Studio, Relume, Supabase list a free tier or open-source option.
• Paid or trial only: Replit — compare the pricing sources below before committing.

Tools and verdicts

1. Lovable Free tier

   One of the easiest ways for non-coders to ship a web app.

   Pricing: Free: 5 daily build credits (up to 30/mo) + 20 Cloud credits; paid plans priced by credits (Pro, Business, Enterprise). See page for current amounts. Source, checked 2026-10-14.

2. Bolt Free tier

   Good for quick prototypes and MVPs straight from a prompt.

   Pricing: Free; Pro $25/mo (monthly); Teams $30/member/mo; up to 28% off yearly. Source, checked 2026-10-14.

3. v0 by Vercel Free tier

   Best for builders who want polished React UI and deploy on Vercel.

   Pricing: Free; Plus $30/user/mo; Business $100/user/mo; includes monthly credits (see page). Source, checked 2026-10-14.

4. Replit Paid

   A solid all-in-one for building and hosting apps with an agent.

   Pricing: Core $20/mo ($18 annual) incl. $20 model credit; higher tier $100/mo ($90 annual); Enterprise custom. Source, checked 2026-10-14.

5. Firebase Studio Free tier

   Good for builders who want Google's backend stack.

   Pricing: Firebase has a no-cost tier; usage-based (Blaze) beyond free quotas; eligible new users may get $300 Google Cloud credit. Source, checked 2026-10-14.

6. Relume Free tier

   Best for quickly planning and building marketing sites.

   Pricing: Free forever tier; paid plans from roughly $14–$40/mo depending on product (see page). Source, checked 2026-10-14.

7. Supabase Free tier

   The go-to backend for AI-built apps.

   Pricing: Free; paid plans include $10/mo compute credits; usage-based beyond quotas (see page). Source, checked 2026-10-14.

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