ToolStack · updated 2026-10-16
The best backend, database and auth for AI-built apps: Supabase, Convex, Clerk, Firebase and Neon, with free tiers and official prices.
Supabase is our top pick: database, auth, storage and APIs in one place with a free tier. Pick Convex for realtime TypeScript apps and add Clerk when you want drop-in auth.
| Tool | Starting price | Free tier | Best for | Strengths | Weaknesses |
|---|---|---|---|---|---|
| Supabase | $25/mo (Pro) checked 2026-10-15 · source | Yes | All-in-one backend |
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| Convex | $25/developer/mo (Professional) checked 2026-10-15 · source | Yes | Realtime TypeScript apps |
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| Clerk | $20/mo (billed annually) checked 2026-10-15 · source | Yes | Auth in minutes |
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| Firebase | Pay as you go (Blaze plan) checked 2026-10-15 · source | Yes | Mobile apps |
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| Neon | Usage-based (Launch, typical ~$15/mo per Neon) checked 2026-10-15 · source | Yes | Serverless Postgres |
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Prices are starting paid prices from each tool's official pricing page on the date shown. Pricing changes often; check the source before you buy.
ToolStack ranks Supabase #1, Convex #2 and Clerk #3 in Backend, Database & Auth. All have free tiers.
Not with Supabase or Firebase, which include auth. Convex and Neon users often add Clerk.
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