Low-code backend to build modern apps

Store and query relational data on the cloud. Make it accessible over GraphQL and REST with a scalable, open-source backend.

Build your app backend in minutes

No credit card required

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+3.5B/mo

Processed Requests

+100

Countries Served

+190k

Developers

Don’t start from scratch each time you build

We have everything you need to transform your backend from a job that takes months, to something that can be ready in weeks,
even days.

Real-Time Database

Build real-time apps by storing and querying relational data between your users with strong user-based security.

Cloud code functions

Deploy and Run server-side logic without needing to spin up your own servers.

APIs & SDKs

Get a smooth, easy-to-use experience when you build using our simple APIs (GraphQL/REST) and SDKs.

What makes us unique?

Open-Source

Straightforward, easy-to-use, and low-learning curve

Relational data, indexing, and aggregate functions

Easy-to-understand and predictable pricing

Dedicated and Enterprise plans

Remove the complexity from the backend,
without removing functionality

Our simple UI, SDKs, and APIs let you spend more time on your
business. We focus on the infrastructure, you focus on your customers.

We speak your language

Back4App lets you quickly connect the front and backend, regardless
of what language was used in your frontend. Get started faster with
less code.

Saving data

GraphQL API

REST API

Javascript SDK

iOS SDK

Android SDK

Flutter SDK

.NET SDK

Querying data

Creating Cloud Functions

Extending GraphQL Schema

Calling Cloud Functions

Saving data

Querying data

Creating Cloud Functions

Extending GraphQL Schema

Calling Cloud Functions

GraphQL API

REST API

Javascript SDK

iOS SDK

Android SDK

Flutter SDK

.NET SDK

copy code

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 mutation { 
  createCharacter(input: {
    fields: {
      name: "Luke Skywalker"
      birthYear: "19BBY"
      homeworld: {
        createAndLink: {
          name: "Tatooine"
          population: 200000
        }
      }
    }
  }) {
    character {
      id
      homeworld {
        id
      }
    }
  }
}

Need more information about the functions?

The foundation
you need to build
professional apps

It doesn't matter if this is your first
build, or you're scaling up, we are
ready to help you in any phase of
development.

How scalable is Back4app?How secure is back4app?

Scale with confidence

Keep costs in check even when you scale your apps with affordable, predictable pricing. Scaling happens automatically and, we guide the process to ensure that nothing goes wrong.

With Back4App you can...

Scale as high as you need

Add new features as you grow

Scale vertically or horizontally

Apps you can build with Back4App

There are no limits to what you can build with Back4App.
We have lots of start kits and examples to take inspiration from.

ReactJS Slack Clone

A React Slack Clone template using real-time, relational queries and authentication.

View Code

Flutter User Login/SignUp

A user User Sign-up/Login Flutter starter kit to speed up your app development.

View Code

React Native Login/SignUp

A user sign-up/login flutter template using Parse.User className.

View Code

Community
support
that
builds you up
(while you build
your app)

We know the importance
of
community when building apps.
We
make it easy to connect to our

community so you can master
new
skills, get answers, or just
talk to
other developers.