Head-to-Head Comparison · Alternative to MongoDB · 🗄️ databases
MongoDB vs Convex
Open-source reactive database that keeps your web and mobile apps in sync. Write everything in TypeScript with built-in auth, cron jobs, and AI integration. Here is how Convex ($0/mo open source) stacks up against MongoDB ($25/mo) across cost, hosting, data privacy, and real-world trade-offs.
Convex is a verified Open Source-licensed open-source replacement for MongoDB. Switching from MongoDB ($25/mo) saves $300/yr per solo seat, or $1,500/yr for a 5-person team. Deployment: Runs on Self-host.
The catch: Requires self-hosting setup, updates, and server maintenance compared to managed MongoDB.
MongoDB vs Convex Specifications
facts verified 2026-11-07
| Dimension | MongoDB (Paid) | Convex (Replacement) |
|---|---|---|
| Monthly Price | $25 / mo | $0 / mo |
| 1-Year Cost (1 seat) | $300 / yr | $0 / yr (Save $300) |
| 1-Year Cost (5 seats) | $1,500 / yr | $0 / yr (Save $1,500) |
| 1-Year Cost (10 seats) | $3,000 / yr | $0 / yr (Save $3,000) |
| Source & License | Proprietary SaaS | open source Open Source |
| Where It Runs | Vendor Cloud | Self-host (your server) |
| Platforms | Web / Cloud | webself-hosteddocker to self-host |
| GitHub Stars | — | ★ 12.8k (active nov 2026) |
Deep Dive: Switching from MongoDB to Convex
Trade-offs, installation & data architecture
What you trade away
Requires self-hosting setup, updates, and server maintenance compared to managed MongoDB.
How to deploy Convex
Clone https://github.com/get-convex/convex-backend or deploy with Docker Compose
What it takes to run
Deploy via Docker or binary release from GitHub and configure environment variables.
Where your data lives
All application data and configuration live on your own server or local database.
Why fork Convex instead of vibe-coding a MongoDB clone?
Instead of paying recurring SaaS fees for MongoDB or rebuilding it from scratch, deploy one of the 8 battle-tested open-source alternatives like TiDB.
MongoDB vs Convex FAQ
Is Convex a good free alternative to MongoDB?+
Yes. Convex is a verified open-source (Open Source) replacement for MongoDB. Open-source reactive database that keeps your web and mobile apps in sync. Write everything in TypeScript with built-in auth, cron jobs, and AI integration.
What is the catch when switching from MongoDB to Convex?+
Requires self-hosting setup, updates, and server maintenance compared to managed MongoDB.
How much do you save switching from MongoDB to Convex?+
MongoDB costs $25/mo ($300/yr) per seat, whereas Convex is $0/mo. Switching saves $300/yr for a solo user, $1,500/yr for a 5-person team, and $3,000/yr for a 10-person team.
How do I install or self-host Convex instead of MongoDB?+
Install: Clone https://github.com/get-convex/convex-backend or deploy with Docker Compose. Setup: Deploy via Docker or binary release from GitHub and configure environment variables.
