A Database That ScalesWith Your Ambition
A MongoDB backend with real-time sync, auto-generated APIs, built-in security, and a visual data browser — designed to help teams build and scale faster.
Built on MongoDB,Extended for Application Development
Back4app removes the operational overhead and layers application-level features on top — APIs, a visual data browser, authentication, real-time sync, and security — so teams can focus on building their apps.
Flexible schemas that evolve as your application grows
APIs, authentication, real-time sync, and security — out of the box
Aggregations, transactions, and native queries
More than just data storage
Back4app adds powerful application-level features on top of MongoDB — relations, real-time sync, security, and geo queries.
Relational Queries on a Document Database
Back4app introduces relations, pointers, and joins — giving you the best of both NoSQL flexibility and SQL-like querying. Model complex relationships without sacrificing MongoDB's document-based power.
- Pointers for one-to-one references between objects
- Relations for many-to-many associations
- Include queries to fetch related data (like SQL JOINs)
- Compound queries with multiple constraints
- Sorting, pagination, and aggregation support
Query like SQL, store like NoSQL.
LiveQuery — Data That Syncs Itself
Subscribe to data changes and get updates pushed to your app instantly. No polling, no WebSocket boilerplate. Build reactive, collaborative applications with real-time data synchronization.
- Subscribe to any query for live updates
- Instant notifications on create, update, delete
- Automatic reconnection handling
- Works with iOS, Android, and Web SDKs
- Efficient WebSocket-based communication
Real-time by default, not as an afterthought.
Security Built Into Every Object
Granular permissions at the class, object, and field level. Define who can read, write, or modify data — without writing custom middleware. Security is a first-class citizen.
- ACLs (Access Control Lists) per individual object
- CLPs (Class Level Permissions) for schema-wide rules
- Role-based access control (RBAC)
- Field-level security for sensitive data
- Protected fields that only server-side code can modify
Defense in depth, built into the data layer.
Location-Aware Data
Store GeoPoints and Polygons natively. Run proximity searches, containment queries, and location-based filtering out of the box. Perfect for delivery, logistics, and social apps.
- GeoPoint type for latitude/longitude coordinates
- GeoWithin queries for polygon containment
- Near queries with distance-based sorting
- Geo-fencing support for location triggers
- Works seamlessly with mobile device GPS
Location intelligence without external services.
A Spreadsheet-Like Interface for Your Database
Model schemas, browse data, and run queries — all from an intuitive visual dashboard. No SQL or command line required. Perfect for developers and non-technical team members alike.
| objectId | name | price | category | inStock |
|---|---|---|---|---|
| xK7mQ9nR | Wireless Headphones | $79.99 | → Electronics | true |
| pL3nT5vW | USB-C Cable | $12.99 | → Accessories | true |
| qR8sY2zA | Smart Watch | $249.00 | → Electronics | false |
| mN4pK7wX | Laptop Stand | $45.00 | → Accessories | true |
Talk to Your Database with AI
Go beyond visual interfaces. Interact with your database using natural language through Back4app's AI Agent, or connect your favorite AI tools via the MCP (Model Context Protocol) integration.
Access Your Data Your Way
Auto-generated APIs for every class. Choose GraphQL, REST, or native SDKs for iOS, Android, JavaScript, Flutter, and more.
GraphQL
Auto-generatedA complete GraphQL API auto-generated from your schema. Query with type safety and auto-complete.
query GetProducts {
products(
where: { price: { lessThan: 100 } }
order: [createdAt_DESC]
first: 10
) {
edges {
node {
objectId
name
price
category { name }
}
}
}
}SDKs for every platform
Built for Scale & Reliability
Enterprise-grade infrastructure designed to scale with your application—from prototype to millions of users—with data hosted on MongoDB Atlas or DigitalOcean Managed Databases.
Auto-Scaling
Automatic scaling based on demand. Handle traffic spikes without manual intervention or downtime.
Multi-Region
Deploy to the region closest to your users. Reduce latency and meet data residency requirements.
Global CDN
File and asset delivery through a global CDN for low latency anywhere in the world.
Automatic Backups
Daily automated backups to keep your data safe. Point-in-time recovery available as an optional add-on.
Build Any Application
From startups to enterprises, Back4App powers applications across every industry.
E-Commerce
Product catalogs, inventory management, order tracking, and customer data with real-time updates.
Internal Tools
Admin dashboards, employee portals, workflow management, and business process automation.
CRUD Applications
Data management apps, content management systems, and form-based applications with full CRUD operations.
Social & Messaging
User profiles, posts, comments, likes, real-time chat, and activity feeds with instant sync.
IoT & Sensors
Time-series data from devices, real-time monitoring dashboards, and automated alerts.
Gaming
Leaderboards, player profiles, game state sync, matchmaking, and in-app purchases.
Frequently Asked Questions
What database does Back4app use?
Can I run native MongoDB queries and aggregations?
What's the difference between Back4app and using MongoDB directly?
How is my data secured?
Is Back4app GDPR compliant?
What SDKs does Back4app support?
Does Back4app support real-time data synchronization?
Can I access my database with AI tools?
Your Backend, Simplified
Start building with a production-ready backend. No credit card required. Free tier includes 25K API requests/month.