App Dev developers on Discord

• Join the serverFree, and it takes a minute.
• Pick App DevThe App Dev room opens, with a pinned starter pack and the roadmap.
• Ask and shareSolved questions get tagged, so the answers stay easy to find.

Tools for App Dev work

Start with these 12

• awesome-ios: Swift and iOS libraries by topic

  A large index of iOS and Swift projects grouped by purpose: networking, architecture, UI components, testing, tooling and learning material. Good when you need to compare two or three options before adding a dependency. Open README.md and use the table of contents; the architecture and testing sections are the most useful for people past their first app. License: MIT.

  github.comAwesome ListBeginner

• react-native-template-obytes: Expo app with good defaults

  A mobile starter built on Expo and TypeScript with Maestro end-to-end flows in .maestro/, EAS build config in eas.json, and an organised src/ folder. Worth reading for how it sets up env handling, linting, commit hooks and tests so a team can start with discipline. License: MIT.

  github.comStarterIntermediate

• architecture-samples: Android app structure, compared

  Google's reference to-do app showing how to structure an Android project with Compose, Hilt and Room. The main code is in app/ and shared test helpers live in shared-test/, so you can study the layers and how tests are organised. Pair it with Now in Android once the basics are comfortable. License: Apache-2.0.

  github.comTemplateIntermediate

• Now in Android: a full modern Android reference

  A working news app that Google uses to demonstrate current Android practice: modular layout, Compose UI, offline-first data and thorough testing. Look at core/ and feature/ to see the module split, build-logic/ for convention plugins, and docs/ for architecture notes. Heavy but very instructive. License: Apache-2.0.

  github.comFull AppAdvanced

• awesome-android-ui: components worth studying

  A visual catalogue of Android UI libraries: animations, lists, dialogs, charts, transitions and more, with pointers to each repo. Useful when you want a polished interaction and would rather read an existing implementation. Everything is in README.md, and the art/ folder holds images. Check each library's maintenance before adopting. License: MIT.

  github.comAwesome ListBeginner

• Signal-Android: study a security-minded messenger

  The Android client of a privacy-focused messenger, with a large modular Gradle layout (app/, lib/, core/) and a reproducible-builds/ folder explaining verifiable builds. Read it for encryption integration, background work and testing at scale. Heavy going, so pick one feature to trace. License: AGPL-3.0, which has strong copyleft terms.

  github.comFull AppAdvanced

• flutter/samples: small apps for each Flutter feature

  The Flutter team's collection of samples, each in its own folder: animations/, form_app/, compass_app/ and more. Pick one that matches the feature you need and read its code. compass_app/ is the one to study for app architecture. License: BSD-3-Clause.

  github.comTemplateBeginner

• Android Basics with Compose

  Google's free course for building Android apps with Kotlin and Jetpack Compose, with no experience needed.

  developer.android.comFree courseBeginner

• The Swift Programming Language

  The official guide to Swift, free online. The language behind modern iOS development.

  docs.swift.orgBookBeginner

• Flutter documentation

  Official docs and learning paths for building iOS, Android, web and desktop apps from one codebase.

  docs.flutter.devDocsBeginner

• Flutter

  Google's open-source UI toolkit for building mobile, web and desktop apps from a single codebase.

  flutter.devFramework

• Tauri

  Build small, secure desktop and mobile apps with a web frontend and a Rust backend.

  tauri.appFramework