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Free databases tiers compared

10 services. Limits as published by each vendor; click the date to open the source.

Service	Free limits	Catch	Checked
Supabase (Free) Free tier	Database size500 MB ComputeShared CPU, 500 MB RAM Egress5 GB + 5 GB cached File storage1 GB Auth MAU50,000 Active projects2	Free projects pause after 1 week of inactivity.	15 Oct 2026
Neon (Free) Free tier	Projects100 Compute100 CU-hrs / month per project Storage1 GB per project Max size2 CU (8 GB RAM) Object storage5 GB	—	15 Oct 2026
MongoDB Atlas (Free) Free tier	Storage512 MB RAM / vCPUShared Price$0 / hour, free forever	Aimed at learning and exploring.	15 Oct 2026
Turso (Free) Free tier	Databases100 Storage5 GB Rows read500M / month Rows written10M / month Syncs3 GB / month Point-in-time restore1 day	—	15 Oct 2026
Upstash Redis (Free) Free tier	Data size250 MB Bandwidth10 GB / month Commands500K / month Databases1	—	15 Oct 2026
Cloudflare D1 Free tier	Rows read5M / day Rows written100,000 / day Storage5 GB total	Queries error once daily limits are hit.	15 Oct 2026
Aiven for PostgreSQL (Free) Free tier	VM1 dedicated VM, 1 CPU RAM1 GB Storage1 GB total	Cannot choose cloud/region; no integrations or connection pooling.	15 Oct 2026
Koyeb Postgres (Free) Free tier	Compute5 h, 0.25 vCPU RAM1 GB Storage1 GB	Scale-to-zero on inactivity.	15 Oct 2026
Firebase Cloud Firestore (Spark) Free tier	Stored data1 GiB Network egress10 GiB / month Document reads50K / day Document writes20K / day Document deletes20K / day	—	15 Oct 2026
CockroachDB Cloud Trial only	Trial30 days, $400 credit Standard$0.092 per vCPU-hour	No permanent free tier listed on the pricing page: trial credit only.	15 Oct 2026