25 Top Cool Free and Open-source Apps Built with Flutter

25 Top Cool Free and Open-source Apps Built with Flutter
Photo by Sandy Millar / Unsplash

Flutter is an open-source UI toolkit developed by Google for building natively compiled applications for mobile, web, and desktop from a single codebase. It allows developers to write code once and deploy it on multiple platforms, reducing development time and effort.

Flutter is considered cool for its fast and efficient performance, cross-platform development capabilities, hot reload feature, beautiful and customizable UI, access to native features, strong developer community, excellent documentation, and being open-source and free.

Overall, Flutter's combination of performance, cross-platform development, hot reload, beautiful UI, access to native features, strong community support, excellent documentation, and open-source nature makes it a cool and powerful framework for building modern and engaging applications.

Here, we list the best open-source free apps that are built using Flutter and have gained a good user base and community support.

1- Butterfly (Handwritten Notes)

Butterfly Notes is an awesome note-taking app that lets you create, organize, and manage all your notes in a super convenient and user-friendly interface.

It's got some cool features like rich text formatting, reminders, tags, and a powerful search function.

The app is designed to be super easy to use and you can even customize it to make it your own. It's all about giving you the best note-taking experience ever!

Butterfly: Is An Open-source Note-taking App Built with Flutter
Butterfly is a cutting-edge note-taking app that places your ideas at the forefront. With Butterfly, you can effortlessly add text and draw pictures, and export your notes with ease across all your devices. The app is available for Android, Windows, Linux, and the web, allowing you to access it from

2- QuiteSmoke

QuitSmoke is a free mobile app that helps track progress in quitting smoking, including money saved, cigarettes avoided, and time smoke-free. It features a countdown timer, health improvement tracking, and money saved calculation. Created by a Turkish developer for his father, the app is ad-free and respects user privacy.

QuitSmoke - Quit Smoking Now App for Android
QuitSmoke is a free open-source mobile app that helps you track your progress in quitting smoking. You can see how much money you’ve saved, how many cigarettes you’ve avoided, and how long you’ve been smoke-free. Additionally, you can monitor how your health is improving. This app features a countdown timer

3- API Dash

API Dash is a remarkable open-source cross-platform API Client that allows you to easily create and customize API requests, visually inspect responses, and generate Dart code instantly. With API Dash, you can seamlessly test, visualize, and integrate APIs.

GitHub - foss42/apidash: API Dash is a beautiful open-source cross-platform API Client built using Flutter which can help you easily create & customize your API requests, visually inspect responses and generate API integration code. A lightweight alternative to postman/insomnia.
API Dash is a beautiful open-source cross-platform API Client built using Flutter which can help you easily create & customize your API requests, visually inspect responses and generate API int…
API Dash: Test, Visualize & Integrate Rest APIs (Flutter Open-source Free App)
API Dash is an exceptional open-source cross-platform API Client that empowers you to effortlessly create and personalize API requests, visually examine responses, and generate Dart code on the fly. With API Dash, you have the ability to seamlessly test, visualize, and integrate APIs. Alternative to: * Postman * Insomnia Features 1- Create

4- AuthPass (Password Manager)

AuthPass (Password Manager)
AuthPass (Password Manager)

AuthPass is a multi-platform, free, and open-source password manager that is fully compatible with KeePass. It is written with Flutter and was started by Herbert Poul, a freelancer developer from Austria, but is now supported by a group of open-source developers.

AuthPass is a KeePass compatible free Password manager for Windows, macOS, and Linux
What is AuthPass? AuthPass is a multi-platform, free, and open-source password manager for all types of users. AuthPass is fully compatible with the popular open-source KeePass password manager, which many consider the father of open-source password managers. The app is written with Flutter which is gaining popularity among developers building

5- AppFlowy

(Note-taking and Task Manager)

AppFlowy.IO is a free open-source note-taking software for teams that offers a writing canvas for tasks, kanban boards, and more. It uses Flutter/Dart for the frontend and Rust for the backend.

Compared to Notion, it provides better organization of text and paragraphs, supports Markdown, and has a straightforward WYSIWYG editor. It works offline and supports tables, boards, sub-pages, templates, and easy block/column addition.

AppFlowy: an Open source Collaborative Note-taking for Creative Teams
AppFlowy.IO is a free open-source note-taking software for teams. It allows you to create almost anything you want in a writing canvas, such as tasks, kanban boards, and more. AppFlowy is written in Flutter/ Dart, and it uses Rust for the backend. Compared to Notion, AppFlowy allows you to

6- GitJournal

GitJournal
GitJournal

GitJournal is a note-taking application known for its emphasis on privacy and data portability. It utilizes a Markdown + YAML header format for storing notes, which is optional but recommended.

GitJournal is an amazing Note-taking app with Git backend
GitJournal is an incredibly useful note taking application that has gained popularity due to its strong focus on privacy and data portability. Markdown with Frontmatter YAML Header One of its standout features is its unique approach to storing notes using a standardized Markdown + YAML header format, which is optional but

7- Phoenix Player

Phoenix Player
Phoenix Player

The Phoenix Project is a free open-source audio player for Android and iOS with a beautiful glassmorphism design, lyrics support, no data collection, cut/fade/ringtone features, flashlight-visualizer, share now-playing, and an ad-free experience.

Phoenix Player: Beautiful Open-source Audio Player with Flutter
The Phoenix Project is a free open-source beautiful audio player for Android and iOS built with Flutter and Dart. Features * Beautiful glassmorphism design * Lyrics * No data collected * Cut, fade and set ringtone * A flashlight-visualizer * Share now-playing * Ad-free * Wallpapers from artwork Screenshots License The Phoenix Project is free software licensed under

8- Watermaniac

Watermaniac is a new app written in Flutter that helps you track the amount of water you drink in a day. It has a beautiful interface and works on both Android and iOS devices.

GitHub - artur-ios-dev/watermaniac: Watermaniac - Flutter - https://play.google.com/store/apps/details?id=com.rmzsoft.watermaniac&hl=pl
Watermaniac - Flutter - https://play.google.com/store/apps/details?id=com.rmzsoft.watermaniac&hl=pl - GitHub - artur-ios-dev/watermaniac: Watermaniac - Flutter - https://play.google.com/store/a…
Watermaniac: Daily Track How Much You Drink Water
Watermaniac is an app that will help you track the amount of water you drink. Staying hydrated is essential for maintaining good health, but it can be challenging to keep track of how much water you’re drinking throughout the day. That’s where Watermaniac comes in! Watermaniac is a new app

9- NavokiNotes

NavokiNotes
NavokiNotes

Navoki Notes is a cross-platform note app built on the Flutter Framework with Firebase integration. It allows data syncing to the cloud and across multiple devices, including Android, iOS, Web App, PWA, Windows, macOS, and Linux. The app is free to use.

GitHub - theshivamlko/navoki_notes: Cross Platform app in Flutter with Firebase Auth and Firestore. Available for Mobile,Web,Desktop
Cross Platform app in Flutter with Firebase Auth and Firestore. Available for Mobile,Web,Desktop - GitHub - theshivamlko/navoki_notes: Cross Platform app in Flutter with Firebase Auth and Firestore…

10- RemoteFiles (Android & iOS)

RemoteFiles is an open source SFTP client for Android and iOS developed with Flutter in the Dart Programming Language. It provides file management features like file operations, folder management, and file sharing, while also offering secure connection storage.

GitHub - nn1ks/RemoteFiles: An open source SFTP client for Android and iOS
An open source SFTP client for Android and iOS. Contribute to nn1ks/RemoteFiles development by creating an account on GitHub.
RemoteFiles: Free Open-source FTP Client for Android and iOS
An open source SFTP client for Android and iOS.

11- Converter Now

Converter Now
Converter Now

Converter Now is a lightweight unit converter app written in Dart and Flutter. It is available as a mobile and desktop app for multiple platforms and supports currency conversion for over 30 currencies.

GitHub - ferraridamiano/ConverterNOW: The Unit Converter app: easy, immediate and multi-platform
The Unit Converter app: easy, immediate and multi-platform - GitHub - ferraridamiano/ConverterNOW: The Unit Converter app: easy, immediate and multi-platform
Converter Now: An Impressive Privacy-focused Free Unit Converter
Paid and even free unit converter are available to download from Google Play, and Apple’s App Store. However, if they are free they are often polluted with ads, and tracker scripts. Here, we provide you a feature-rich unit converter app for Android: Converter Now. Converter Now is a Libre (Open

12- Liso

Liso

Liso is an exceptional, free open-source decentralized password manager written in the powerful Dart language and versatile Flutter framework by the highly skilled Oliver Martinez. It effortlessly ensures the utmost security of passwords while seamlessly facilitating the secure management of private data information.

Liso App Is An Open-source Decentralized Private Data Vault
An open-source data management application that focuses mainly on securely storing private information and files. Think of 1Password, in a decentralized manner. Combined with a Crypto Wallet!

13- Time Cop (Time Tracking)

Time Cop (Time Tracking)
Time Cop (Time Tracking)

Time Cop is a time tracking app for Android and iOS devices written in Dart and Flutter. It offers a simple interface for creating, managing, and tracking multiple tasks, including daily routines, work tasks, projects, appointments, shopping lists, and sport exercises.

Time Cop is available to download for iOS and Android devices.

GitHub - hamaluik/timecop: A time tracking app that respects your privacy and the gets the job done without being fancy.
A time tracking app that respects your privacy and the gets the job done without being fancy. - GitHub - hamaluik/timecop: A time tracking app that respects your privacy and the gets the job done w…
Time Cop: Flutter-based Privacy-first Open-source Time Tracking app for iOS and Android
Time Cop is a lightweight time tracking app for Android and iOS devices. It comes with a full offline-only mode without any tracking or advertising script. The app is written with Dart and Flutter. It features a simple, straightforward interface that works with all users. With Time Cop, you can

14- BlackHole (Music Player)

BlackHole is an innovative and user-friendly music player application developed using Flutter. It offers a sleek design, intuitive interface, customizable playlists, advanced search options, and seamless integration with popular music streaming platforms, providing a seamless and immersive music listening experience.

GitHub - Sangwan5688/BlackHole: A Music Player App made with Flutter
A Music Player App made with Flutter. Contribute to Sangwan5688/BlackHole development by creating an account on GitHub.
BlackHole is a Nifty Privacy-focused Stylish Music Player Built with Flutter
BlackHole is an innovative and user-friendly music player application developed using the latest technologies in Flutter. With its sleek design and intuitive interface, it offers a seamless and immersive music listening experience. Whether you are a casual music enthusiast or a serious audiophile, BlackHole provides a wide range of features

15- ReVanced Manager

ReVanced Manager is an Android application that uses ReVanced Patcher to add, remove, and modify existing functionalities in Android applications. It offers portable patching, an intuitive UI, and customization options with third-party sources.

GitHub - ReVanced/revanced-manager: 💊 Application to use ReVanced on Android
💊 Application to use ReVanced on Android . Contribute to ReVanced/revanced-manager development by creating an account on GitHub.

16- Musify (Music Player)

Musify (Music Player)
Musify (Music Player)

Musify is a totally free and open-source music player app that's got your back when it comes to streaming. With just one app, you can unlock the full potential of music and stream effortlessly.

GitHub - gokadzev/Musify: Unlock the full potential of music: Stream effortlessly with one app!
Unlock the full potential of music: Stream effortlessly with one app! - GitHub - gokadzev/Musify: Unlock the full potential of music: Stream effortlessly with one app!
Musify is a Cool Music Player App that supports streaming.
Musify is an open-source free music player app that supports streaming. Unlock the full potential of music by effortlessly streaming with just one app! It is written entirely in Flutter and features a user-friendly interface with a responsive and visually appealing design. Features * Online Song Search With Suggestions * Streaming Support

17- Prism (Wallpaper Manager)

Prism (Wallpaper Manager)
Prism (Wallpaper Manager)

Prism is an Android app that provides exclusive wallpapers and setups. Users can download, favorite, and share high-quality wallpapers from WallHaven and Pexels, as well as wallpapers uploaded by verified and community users.

GitHub - Hash-Studios/Prism: Prism is a beautiful open-source wallpapers app for Android. It is built with Dart on top of Google’s Flutter Framework.
Prism is a beautiful open-source wallpapers app for Android. It is built with Dart on top of Google's Flutter Framework. - GitHub - Hash-Studios/Prism: Prism is a beautiful open-source wallpape…

18- Openreads (Book Reader with Privacy)

Openreads is a privacy-oriented and open-source Android app for tracking books. It provides four lists for organizing books: finished, currently reading, want to read later, and unfinished. Custom tags and filters can be used. Books can be added by searching in the Open Library database, scanning barcodes, or adding details manually.

GitHub - mateusz-bak/openreads-android: A mobile books tracker written in Flutter that respects your privacy.
A mobile books tracker written in Flutter that respects your privacy. - GitHub - mateusz-bak/openreads-android: A mobile books tracker written in Flutter that respects your privacy.

19- Frosty (Twitch Mobile Client)

Frosty is an open-source mobile Twitch client for iOS and Android that supports 7TV, BetterTTV, and FrankerFaceZ emotes and badges. It offers features such as browsing followed and top streams, autocomplete for emotes and user mentions, multiple themes, search functionality, and the ability to see and filter chatters in a channel.

Frosty for Twitch
Frosty is a free and open-source mobile Twitch app for iOS and Android built from the ground up. It supports emotes and badges from 7TV, BetterTTV (BTTV), and FrankerFaceZ (FFZ) — popular third-party extensions for Twitch used by millions.
GitHub - tommyxchow/frosty: A mobile Twitch client for iOS and Android with 7TV, BetterTTV (BTTV), and FrankerFaceZ (FFZ) support.
A mobile Twitch client for iOS and Android with 7TV, BetterTTV (BTTV), and FrankerFaceZ (FFZ) support. - GitHub - tommyxchow/frosty: A mobile Twitch client for iOS and Android with 7TV, BetterTTV (…

20- Notes App

Notes App
Notes App

Note Taking App is a productivity-focused app that is built with Flutter and uses Sqlite database. It has a simple yet user-friendly interface with cartoon alike colors.

GitHub - bimsina/notes-app: Note Taking App made with Flutter with Sqlite as database..
Note Taking App made with Flutter with Sqlite as database.. - GitHub - bimsina/notes-app: Note Taking App made with Flutter with Sqlite as database…

21- MovieLab

MovieLab
MovieLab

MovieLab is an open source movie tracker and finder that provides access to movies, series, seasons, episodes, movie recommendations, and actor information from IMDb.

GitHub - ErfanRht/MovieLab: An open source movie tracker and movie finder.
An open source movie tracker and movie finder. Contribute to ErfanRht/MovieLab development by creating an account on GitHub.

22- Taskist

Taskist is a ToDo List app for Task Management that utilizes Firebase. Configure Firebase to test the app on Android and iOS.

GitHub - huextrat/Taskist: Flutter ToDo App with Firebase
Flutter ToDo App with Firebase. Contribute to huextrat/Taskist development by creating an account on GitHub.

23- Flutter to do App "To Do List"

A Flutter Todo-lists app based on the design of the To Do App, created by Rudi Hartono. You can download the app directly to your Android device from Google Play.

GitHub - LiveLikeCounter/Flutter-Todolist: A Flutter based to do list app (yes, another to do list... but... this time based on a beautiful design)
A Flutter based to do list app (yes, another to do list... but... this time based on a beautiful design) - GitHub - LiveLikeCounter/Flutter-Todolist: A Flutter based to do list app (yes, another to…

24- Openlib

Openlib
Openlib

Openlib is a super cool open-source app that lets you download and read books from the shadow library.

GitHub - dstark5/Openlib: An Open source app to download and read books from shadow library (Anna’s Archive)
An Open source app to download and read books from shadow library (Anna’s Archive) - GitHub - dstark5/Openlib: An Open source app to download and read books from shadow library (Anna’s Archive)

25- One Day List

One Day List
One Day List

"One Day list" is a cool little app that can help you stay organized with your daily plans. If you're into making to-do lists, this app is perfect for you. It's simple, beautiful, and does the job.

GitHub - asjqkkkk/flutter-todos: 📝 one day list app created by flutter!
📝 one day list app created by flutter! Contribute to asjqkkkk/flutter-todos development by creating an account on GitHub.

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