Data & backend in Flutter using app

COVID-19 App.

CategoryBackend/Data
Stars★ 2,120
Last update2024-02-23
PriorityMedium

app is an open-source backend & data library for Flutter mobile app development, with 2,120★ on GitHub and last updated on 2024-02-23. This guide covers what app does, why it matters in 2026, how to add it to your project, when to reach for it, and how it compares to the alternatives — plus a quick FAQ.

What is app?

COVID-19 App. It focuses on talking to APIs, databases, and persistence layers. The project lives at WorldHealthOrganization/app and is maintained by WorldHealthOrganization.

Why app is worth knowing in 2026

app carries 2,120 GitHub stars, 507 forks, 150 open issues. It has been around since 2020, and is mature and stable. For a Backend/Data option, that combination of adoption and upkeep usually means a healthy community, production usage, and plenty of examples to learn from — the things that make a dependency safe to build on.

Installing app

Add the package to your pubspec.yaml:

dependencies:
  app: ^latest

Then fetch it and import it in your Dart code:

flutter pub get
import 'package:app/app.dart';

Check the package’s example/ directory and its GitHub repo for the exact API — app is versioned there with full docs so you always integrate against the current release.

When should you use app?

Reach for app when:

  • you’re calling REST/GraphQL APIs from a Flutter app
  • you need local storage, caching, or offline sync
  • you want typed, testable data access

It’s especially relevant if your project touches appengine-java, coronavirus, covid-19, dart, epidemiology, firebase.

app vs. the alternatives

If you’re weighing options in the Backend/Data space, these are the other projects developers most often compare app against:

There’s no single winner — the right pick depends on your app’s size, your team’s familiarity, and your performance budget. Browse the full Backend/Data collection to compare them side by side.

Frequently asked questions

Is app free to use?

Yes. app is open source and free to use in your Flutter projects. You can view the source, report issues, and contribute on GitHub.

Does app work on both iOS and Android?

app is built for Flutter, so it targets iOS and Android from a single codebase, and typically web and desktop too depending on the project’s platform support.

As of 2026, app has around 2,120 stars and 507 forks on GitHub, which puts it among the more widely used options in the Backend/Data space.

What are good alternatives to app?

Popular alternatives in the Backend/Data category include gopeed, mmkv, proxypin. The best choice depends on your app’s size, team, and performance needs.

Resources & links

Part of FlutterCook — 500 hands-on guides to the best open-source Flutter libraries, UI kits, and apps. Explore the live GitHub trends or browse YouTube guides.

#appengine-java#coronavirus#covid-19#dart#epidemiology#firebase