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Convex

A reactive backend where queries and mutations are TypeScript functions and clients update live.

Free plan + paidOpen sourceSelf-hostableBackend and database platforms
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About Convex

Convex is a backend platform built around a transactional document database and server functions written in TypeScript. Instead of writing SQL or REST endpoints, you write query and mutation functions that run next to the data; client libraries for React and other frameworks subscribe to queries, so the interface updates automatically when data changes. File storage, scheduled jobs, text and vector search, auth integrations and a growing library of reusable components are included. Because everything is code with end-to-end types, it works well with AI coding tools, and Convex leans into that. The backend is open source and can be self-hosted, though most teams use the managed cloud. Pricing has a free tier and a pay-as-you-go Starter option for small projects, then a Professional plan charged per developer with higher limits and team features. The trade-off is a programming model specific to Convex, so moving away means rewriting your data layer.

Best for: TypeScript teams building realtime apps who want the backend to be just functions.

Pros and cons

What works

  • Live-updating queries without writing websocket code
  • End-to-end TypeScript types from database to UI
  • Free tier plus pay-as-you-go for small projects

Why people leave

  • Proprietary programming model makes migrating away costly
  • Per-developer pricing on the Professional plan
  • Self-hosting is possible but less documented than the cloud

Top Convex alternatives

See all 5
  1. 1Firebase logo
    Firebase

    Realtime sync with a far bigger ecosystem and mobile tooling.

    66.5
  2. 2Supabase logo
    Supabase

    SQL and Postgres if you prefer a standard database you can take elsewhere.

    62.6
  3. 3InstantDB logo
    InstantDB

    Similar realtime, client-first model with an open-source engine you can self-host.

    59.6
  4. 4Appwrite logo
    Appwrite

    Open-source backend with conventional REST and SDK APIs instead of a custom model.

    57.2
  5. 5Gadget logo
    Gadget

    Another TypeScript-centric hosted backend with built-in hosting and integrations.

    55.3

Why people left Convex

In reviewers' own words, from reviews of the apps they moved to. These are their opinions, not ours.

No switching stories yet. If you moved away from Convex, review the app you switched to and tell us why.

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Convex: common questions

Is Convex free?

Convex has a free plan and paid plans. Free plan: Free or $0/month plus pay as you go (checked on Convex's own site).

Is Convex open source?

Yes. The source code is on GitHub at get-convex/convex-backend. You can also run it on your own server.

What platforms does Convex run on?

Convex is available for Web and Self-hosted.

What are the best alternatives to Convex?

The highest-ranked Convex alternatives right now are Firebase, Supabase and InstantDB. See the full ranked list for pricing, platforms and verified facts.

See all 5 Convex alternatives