Managed databases

MongoDB Atlas vs Supabase

Choose MongoDB Atlas when the model is documents. Choose Supabase when you want Postgres plus auth and storage, and a free project is enough until the Pro plan at $25 a month.

MongoDB Atlas

Managed document database with a free shared tier

Free M0, then paid

Strengths

  • M0 is a real free cluster for prototypes
  • Dedicated tiers cover production

Limits

  • A real bill splits compute, storage, and backup
  • Document modeling is a poor fit for relational workloads

Vendor pricing Alternatives

Supabase

Postgres plus auth, storage, and a data API

Free tier, Pro from $25/mo

Strengths

  • Auth and storage sit next to the database
  • The free project is enough for a prototype

Limits

  • Pro is a platform fee, then usage on top
  • It is more than a database if you only need Postgres

Vendor pricing Alternatives