15 best open-source Android apps with source code for developers to practice

Most of us used to aware of open-source software available for pc — mainly Linux, but we forget about another major platform — smartphones. And in this article, we are discussing some of the best open-source Android apps with source code for developers to enrich their Android development skills.

The open-source community is always an opportunity for upcoming developers to learn software development. Because a source code for open-source software is always available for public and developers can utilize it to understand the working and coding from its scratch. In short, open-source projects are learning curves for newbie developers.

When it comes to the smartphone market, Android has the major shares and millions of apps are out there for Android devices. And most of these apps are either coded in Java or Kotlin. And to learn Android development, one must know the basic understanding of one of these programming languages. Even though if you successfully learned the basic coding principles, sometimes newbie coders struggle to develop their first couple of Android apps.

This is because of the lack of reference — I mean they didn’t get enough example apps to look into its codes to get some ideas to proceed during initial days. There comes the importance of open-source Android apps.

Open-source Android apps help emerging Android developers to learn the coding structure of fully working Android apps. They can even alter these codes and modify the same Android open-source apps. If you are an experienced Android developer, you can contribute new features and functionalities to these open-source Android apps and help the project to grow on.

Enough gibber gabber, here are some of the best open-source Android apps with source code link to boost your Android development skills.

Best open-source Android apps with source code:

1. Telegram

Telegram - Best open-source Android apps

Telegram is one of the mostly used encrypted instant messaging service available for Android and iOS. Learn from the Telegram code — how an instant messaging app with super security works.

Google Play: Telegram

Source code: GitHub

2. Lawnchair Launcher

Lawnchair Launcher - Best open-source Android apps

Lawnchair Launcher is a simple open-source Android launcher app bringing Pixel features. If you are developing a new Android launcher, then refer the codes of Lawnchair, because it may help you to integrate different Android customization options to your app.

Google Play: Lawnchair Launcher

Source code: GitHub

3. Minimal ToDo

Minimal ToDo - Best open-source Android apps

Minimal ToDo is a lightweight Android app for the to-do list. This app will help beginners to develop a simple yet powerful to-do list app.

Google Play: Minimal ToDo

Source code: GitHub

4. Amaze File Manager

Amaze File Manager - Best open-source Android apps

Amaze File Manager is a lite file manager app for Android with material design guidelines. There are a lot of things you can learn from this app, like how to manage files on SD cards, cloud services support, AES Encryption and Decryption of files for security, etc.

Google Play: Amaze File Manager

Source code: GitHub

5. Open Camera

Open Camera - Best open-source Android apps

Open Camera is a fully featured and open-source camera app for Android devices. The project will help you know about how to add the auto-stabilization option on a camera app, how to take photo remotely by making a noise, multi-touch gesture and single-touch control on the camera app, etc.

Google Play: Open Camera

Source code: SourceForge

6. OmniNotes

OmniNotes - Best open-source Android apps

Fully-featured lightweight open-source Android note-taking application. With OmniNotes app source code will help to develop your own note talking application with features like basic add, modify, archive, trash and delete notes actions, insertion of an image, audio and generic file attachments in notes, including a To-do list feature on your note app, etc.

Google Play: OmniNotes

Source code: GitHub

7. Super Clean Master

Super Clean Master - Best open-source Android apps

Similar to Clean Master app, Super Clean Master is used to clean up some junk data from your Android device. Super Clean Master project will help you to understand the collection and detection of junk files and how to handle it in an elegant way. the project is a little bit complicated, it will take some time for beginners to fully grasp the source code.

Google Play: Not Available

Source code: GitHub

8. AntennaPod

AntennaPod - Best open-source Android apps

AntennaPod is a podcast manager and player that gives you instant access to millions of free and paid podcasts. This open-source Android app will teach you different integration techniques, managing playback settings, etc.

Google Play: AntennaPod

Source code: GitHub

9. TimberX Music Player

TimberX Music Player - Best open-source Android apps

TimberX Music Player is one of the new open-source Android apps written in Kotlin. TimberX comes with a simple UI with great features. The app source code will help you learn databinding and dependency injection with KOIN. The app has cross-platform support — it works on phones, Android Wear, Android Auto, Chromecast and other cast devices and Google Assistant.

Google Play: TimberX Music Player

Source code: GitHub

10. LeafPic

LeafPic - Best open-source Android apps

LeafPic is a fluid, material-designed alternative gallery app for Android. It comes with all stock gallery features and the source code is really a helpful guide for a beginner Android developer.

Google Play: Not Available

Source code: GitHub

11. K-9 Mail

K-9 Mail - Best open-source Android apps

K-9 Mail is an open-source email client for Android with support for multiple accounts, search, IMAP push email, multi-folder sync, flagging, filing, signatures, BCC-self, PGP/MIME & more. This project helps you to understand the working of an email client and how to implement IMAP, POP3, and Exchange 2003/2007.

Google Play: K-9 Mail

Source code: GitHub

12. Easy Sound Recorder

Easy Sound Recorder - Best open-source Android apps

Easy Sound Recorder is a simple open-source sound recorder app with material design. The project will help you to learn Android voice recording integration and manipulation in apps.

Google Play: Easy Sound Recorder

Source code: GitHub

13. FreeOTP Authenticator

FreeOTP Authenticator - Best open-source Android apps

FreeOTP is an open-source 2FA authenticator developed by Red Hat. The app source code teaches you the working of an authenticator app, how to generate one-time passwords on your mobile devices which can be used in conjunction with your normal password to make your login nearly impossible to hack.

Google Play: FreeOTP Authenticator

Source code: FedoraProject

14. Keepass2Android Password Safe

Keepass2Android Password Safe - Best open-source Android apps

Keepass2Android is an open-source password manager app for Android. The projects make you understand the security features of a password manager and how to safeguard and autosave passwords using built-in cloud storage options.

Google Play: Keepass2Android Password Safe

Source code: GitHub

15. ML Manager

ML Manager - Best open-source Android apps

A modern, easy and customizable open-source app manager for Android with root features. The project helps you to learn how to extract installed & system apps and save locally as APK, uninstallation process of apps, etc

Google Play: ML Manager

Source code: GitHub

Bonus app to get more open-source Android apps:

F-Droid

F-Droid is a third-party Android app store which EXCLUSIVELY distributes open-source Android apps. F-Droid has a wide collection of open source apps for Android and with their official app, it is easy to browse, install, and keep track of updates on your device. Also simply browse each app page to get their source code.

Google Play: Not Available

Official Website: F-Droid

So boost your Android development skills with these awesome open-source Android apps from different categories. Remember, in coding, you have to practice a lot, so read these codes to get some new ideas for your next Android project.

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