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.
No credit card required


By signing up you agree to our Terms of Service and Privacy Policy.

Dont 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

Read more

Cloud code functions

Read more


Read more

What makes us unique?

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 withless code.
Saving data
Saving data
Querying data
Creating Cloud Functions
Extending GraphQL Schema
Calling Cloud Functions
Javascript SDK
Android SDK
Flutter SDK
copy code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
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.
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.

Trusted by startups around
the world

Curious about whats
under the hood?

Back4App is a combination of open-source tools. Our backend platform was built using enterprise-grade, open-source products like:
footer background icons

Ready to focus on the frontend to create exceptional experiences for your users?

Join over 190K developers who use Back4App to build faster, focus more on the user experience, and save money. To find out more, contact us today.