Guides for building an app with AI

The quiz ranks one plan. Pairwise pages compare two tools. These guides cover the searches that do not fit either shape: three tools at once, what the free tiers include, and the moment a prototype has to be kept. The last four are for after the app exists: where to host it, Supabase or Firebase, a security pass, and how to take payment. Tool prices were checked 2026-10-19. Hosting, database, and payment figures were checked 2026-10-22.

• Lovable vs Bolt vs ReplitWho each browser builder is for, what free and paid actually buy, and when to leave for an editor.
• Cursor vs Claude Code vs CodexAn editor, a terminal agent, and the agent bundled with ChatGPT — and when not to start with any of them.
• Best free AI coding toolsWhat each free plan actually includes, who it is enough for, and the moment it runs out.
• Can you build a SaaS with AI if you don't code?A personal prototype and a product other people log into are different jobs. Here is a calm path.
• From a browser builder to CursorWhat to do when Lovable, Bolt, or Replit credits burn, or the project needs a repo you can keep.
• Where to host your AI-built appWhich host fits the app you already built, what free includes, and the first price when it does not.
• Supabase vs Firebase for beginnersFree quotas, the first paid price, auth, and which AI builders connect to each.
• Security checklist for AI-built appsSeven checks before you share the link, plus a prompt you can paste into the AI tool for each one.
• How to take payments in your AI-built appFees, who files the sales tax, where a payout can land, and which to pick for a first app.

One guide walks through whether you can build a SaaS with AI, and the work that starts once someone else has an account. People also call that style of building vibe coding. Two-tool pages stay under Compare. Project-and-budget rankings stay under Best for. Nothing here repeats those as a thinner list.