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Most buyers should pick Supabase.
Choose MongoDB if your app is document-first, needs Atlas or self-managed deployment, or uses its search, stream-processing, and vector tools. Atlas Flex starts at $8/month, with listed usage costs of $8–$30/month; dedicated starts at $56.94/month. Choose Supabase if you want a portable Postgres backend with auth, storage, APIs, and functions together. Its paid Pro plan starts at $25/month. Both have free plans; check project, storage, traffic, and compute caps before switching.
01Side by side
| MongoDB | Supabase | |
|---|---|---|
| Starting paid price | Atlas Flex: $8/month; listed usage costs $8–$30 | Pro: $25/month |
| Free plan | M0: 512 MB storage; up to 100 ops/second | 500 MB database; 5 GB egress; 2 projects |
| Best for | Document-first apps and self-managed deployments | Apps needing a Postgres backend with built-in services |
| Core strength | Flexible documents, search, vectors, and stream processing | Postgres, Auth, storage, APIs, and Edge Functions |
| Learning curve | Review ease score: 7/10 | Review ease score: 7.5/10 |
| Integrations and data | Atlas across clouds or self-managed MongoDB | Portable Postgres with ready-to-use REST APIs |
| Team and seat costs | Enterprise Advanced price not published | Team: $599/month; seat price not published |
| Support | Paid support prices not published | Enterprise includes 24×7×365 premium support |
MongoDB Choose MongoDB if
- Choose MongoDB if your app is built around a document data model.
- Choose MongoDB if you need Atlas or self-managed deployment.
- Choose MongoDB if you need its vector, search, or stream-processing tools.
Supabase Choose Supabase if
- Choose Supabase if you want Postgres, Auth, storage, and APIs together.
- Choose Supabase if a portable Postgres database fits your app.
- Choose Supabase if its published Pro limits fit your workload.
02Pricing compared
MongoDB has a free Atlas M0 tier with 512 MB storage and up to 100 operations per second. Atlas Flex starts at $8/month, but the pricing page lists usage costs of $8–$30/month and a $0.011/hour base rate. Dedicated clusters start at $56.94/month. Supabase also has a free plan: 500 MB database storage, 5 GB egress and 1 GB file storage, with projects pausing after a week of inactivity. Its Pro plan starts at $25/month and includes 8 GB disk, 250 GB egress and 100 GB file storage. Those base prices are not the whole bill: Supabase lists compute options from $10/month, plus overage rates. MongoDB lists hourly Atlas billing; neither pricing page publishes annual prices. Compare your expected storage, traffic and compute use before switching.
03Features and depth
MongoDB is the clearer fit when the data model is document-first. Its Atlas platform supports operational and transactional workloads, search, analytics, stream processing and AI applications; MongoDB also offers self-managed software. Atlas Vector Search supports semantic search, recommendations and AI context, while MongoDB Search combines database and search capabilities. Those options make MongoDB broader than a database chosen only to store JSON, but the published pricing does not establish the cost of every workload or add-on.
Supabase takes a different route: each project includes a portable Postgres database, with authentication, Row Level Security, file storage, REST APIs, edge functions and realtime features. It also lists tools for vectors, scheduled jobs and message queues. That bundled backend may suit teams that want those pieces together, while MongoDB offers more deployment choice through Atlas and self-managed use. The practical decision is whether your app needs a document database and MongoDB’s platform tools, or a Postgres-centered backend with services attached.
04Ease of use and learning curve
Supabase puts a database and common backend services in one platform: its projects include Postgres, Auth, storage, APIs and edge functions. That can reduce the number of separate pieces to assemble, but its free and paid plans have specific project, storage and egress limits. Check those caps—and the cost of additional compute—against your expected use.
MongoDB gives you a choice between Atlas and self-managed deployment, so teams also need to decide who operates the database. Atlas has a free tier for learning and exploring, while self-managed Enterprise Advanced pricing is not published. MongoDB’s document model and Supabase’s Postgres foundation imply different data-model choices; the better learning curve depends on what your team already knows. Neither product’s published information establishes that one is universally easier.
Questions people ask
Is there anything better than Supabase?
There is no universal winner in the published information. Supabase is a Postgres-based backend with auth, storage, APIs and functions, and its Pro plan starts at $25/month. MongoDB may fit better if you need a document database, self-managed deployment, or Atlas search and stream-processing tools. Compare workload fit and plan limits.
Is MongoDB better than Postgres?
They are different database approaches, not a blanket ranking. MongoDB is a document database available through Atlas or self-managed software. Supabase is built around portable Postgres and adds backend services. Choose based on your data model, deployment needs and required features; the published information does not show one is better for every app.
What are the top 3 NoSQL databases?
The published product information covers MongoDB and Supabase, not a ranked list of NoSQL databases. MongoDB is explicitly a document database; Supabase is Postgres-based, so it is not presented here as a NoSQL option. We can’t name or rank three products from these sources without inventing comparisons.
Does Supabase use SQL?
Supabase includes a full, portable Postgres database in each project, and its platform provides ready-to-use REST APIs. The published information identifies the database as Postgres but does not detail its SQL interface or query workflow. If SQL access is a requirement, confirm the specific workflows and access controls in the product documentation.