Best Databases for Startups 2026
by Anonymous
Supabase (PostgreSQL), PlanetScale (MySQL), MongoDB Atlas compared head-to-head on Type, Query Language, Max Free Storage, Replication — real data to help you make the right call.
Supabase (PostgreSQL)
Relational (PostgreSQL 15)
type
SQL + REST + GraphQL
query language
500MB database + 1GB file storage
max free storage
Read replicas on Pro plan
replication
Managed cloud (AWS regions)
hosting
Free; Pro from $25/mo
pricing
PlanetScale (MySQL)
Relational (MySQL-compatible, Vitess)
type
SQL (MySQL wire protocol)
query language
5GB on Hobby (deprecated free tier)
max free storage
Horizontal sharding via Vitess
replication
Managed cloud (AWS, GCP)
hosting
Scaler from $39/mo
pricing
MongoDB Atlas
Document (NoSQL)
type
MQL (MongoDB Query Language)
query language
512MB (M0 free cluster)
max free storage
3-node replica set (all tiers)
replication
AWS, Azure, GCP (90+ regions)
hosting
Free (M0); Dedicated from $57/mo
pricing
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