StackRank

The best database and backend for AI-built apps in 2026

Most AI-generated apps need the same three things: a database, sign-in and file storage. These backends give you all three with a free tier and are well supported by AI coding tools.

Updated Nov 2, 2026 · Editorial, not sponsored

Our picks

  1. #1
    Supabase

    Postgres with auth, storage and realtime. Default backend for most AI app builders. Best for full backend for vibe-coded apps. Pricing: free plan available.

  2. #2
    Firebase

    Google's app backend: database, auth, hosting. Mature, generous free tier. Best for mobile and realtime apps. Pricing: free plan available.

  3. #3
    Convex

    Reactive TypeScript backend database. End-to-end type safety, great with AI codegen. Best for typescript-first realtime apps. Pricing: free plan available.

How to choose

  • Want plain Postgres with auth included: start with the #1 pick.
  • Building a mobile or realtime app: a Google-backed backend is a safe choice.
  • All-TypeScript team that wants live-updating data: try the reactive option.

Full databases / backends ranking

  1. 1
    Supabase

    Postgres with auth, storage and realtime

    Why it ranks · Default backend for most AI app builders

    FreeFull backend for vibe-coded apps

  2. 2
    Firebase

    Google's app backend: database, auth, hosting

    Why it ranks · Mature, generous free tier

    FreeMobile and realtime apps

  3. 3
    Convex

    Reactive TypeScript backend database

    Why it ranks · End-to-end type safety, great with AI codegen

    FreeTypeScript-first realtime apps

  4. 4
    Neon

    Serverless Postgres with branching

    FreeServerless Postgres

  5. 5
    PocketBase

    Open-source backend in a single file

    FreeSelf-hosted small projects

How we rank: read the methodology.