MongoDB AtlasvsSupabase
Score Comparison
Signals Comparison
MongoDB Atlas
- Pricing gets expensive and complicated at scale(8/10)
- Vendor lock-in with Atlas-specific APIs(8/10)
- Data egress costs rack up quickly(7/10)
- Backup costs add up beyond base pricing(6/10)
Supabase
- Supabase project paused - free projects pause after 1 week(9/10)
- Unexpected billing - charged for ghost compute(9/10)
- Team plan jumps to $599/month - big leap from $25 Pro(6/10)
- Why is my Supabase bill so high? Per-project compute adds up(8/10)
MongoDB Atlas
- Dashboard and UI need improvement(6/10)
Supabase
- RLS policies complex and impact performance significantly(7/10)
- Local development with CLI is unreliable - Docker issues(7/10)
MongoDB Atlas
- Query performance can be sluggish(7/10)
- Consumes more storage than relational databases(6/10)
Supabase
- Edge Functions cold starts and execution limits(6/10)
- Database hits connection limits as user base grows(7/10)
MongoDB Atlas
- UAE region extended outage (March 2026)(8/10)
Supabase
- Real-time subscription limits cause dropped connections(7/10)
- Auth errors and email link failures(6/10)
- Supabase down again? Outages still frequent in 2026(9/10)
- Auth emails stop sending - 'email rate limit exceeded'(7/10)
MongoDB Atlas
- Configuration options hidden behind tiers(5/10)
Supabase
No signals
MongoDB Atlas
- AWS VPC connection can be problematic(6/10)
Supabase
- Can't connect to Supabase database - direct connection is IPv6 only(6/10)
MongoDB Atlas
No signals
Supabase
- No live chat even on Enterprise - support feels outdated(7/10)
MongoDB Atlas
No signals
Supabase
- Inconsistent documentation frustrates developers(5/10)
Pricing Comparison
MongoDB Atlas
Users: N/A
Storage: 512MB
Limits: 512MB limit, no VPC peering, no dedicated support, shared cluster performance
Users: N/A
Storage: 5GB
Limits: Variable workloads only, not for consistent high-throughput
Users: N/A
Storage: 10GB
Limits: Entry production tier, may need M30+ for significant workloads
Users: N/A
Storage: 40GB
Limits: ~$0.54/hour, still entry-level for larger workloads
Supabase
Users: Unlimited users
Storage: 500 MB database, 1 GB file storage
Limits: Hard limits (no overage), no backups, 1-day logs, max 2 active projects
Users: Unlimited users
Storage: 8 GB disk per project, 100 GB file storage
Limits: Micro compute has 60 direct / 200 pooler connections; turning off the spend cap exposes you to uncapped usage bills
Users: Unlimited users
Storage: Same quotas as Pro
Limits: No uptime SLA (Enterprise only)
Users: Unlimited
Storage: Custom
Limits: Pricing not published
Feature Comparison
| Feature | MongoDB Atlas | Supabase |
|---|---|---|
| Database | ||
| Document Database (NoSQL) Flexible schemas | ||
| PostgreSQL Database Full SQL support, real PostgreSQL | ||
| Database Branching Not available (Neon has this) | ||
| Point-in-time Recovery Enterprise only | ||
| Infrastructure | ||
| Multi-Cloud (AWS/Azure/GCP) | ||
| Global Clusters | ||
| API | ||
| Auto-generated REST API PostgREST instant APIs | ||
| GraphQL API Via pg_graphql extension | ||
| Search | ||
| Atlas Search Full-text search | ||
| AI | ||
| Vector Search For AI/ML apps | ||
| Security | ||
| Row Level Security Powerful but impacts performance | ||
| SSO/SAML Team plan ($599) and above | ||
| Auth | ||
| Authentication Email, OAuth, magic links | ||
| Reliability | ||
| Automatic Failover Replica sets | ||
| Storage | ||
| File Storage S3-compatible object storage | ||
| Pricing | ||
| Free Tier (M0) Perpetual, 512MB | ||
| Transparent Pricing Complex cost model | ||
| Compute | ||
| Edge Functions Deno runtime, 60s limit | ||
| Features | ||
| Built-in Auth/Storage Needs external tools | ||
| Real-time Subscriptions Limited vs Supabase | ||
| Deployment | ||
| Self-hosting Full Docker deployment | ||
| Compliance | ||
| SOC 2 Compliance Team plan and above | ||
| HIPAA Compliance Enterprise only | ||
| Support | ||
| Live Chat Support Not available at any tier | ||
| Phone Support Not available at any tier | ||