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Top 23 Kotlin App Projects
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Project mention: Signal may silently fall back to "unsealed sender" message if server returns 401 | news.ycombinator.com | 2025-06-10
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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SpotiFlyer
Kotlin Multiplatform Music Downloader, Supports Spotify / Gaana / Youtube Music / Jio Saavn / SoundCloud.
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Project mention: LTT video on de-Googling removed for "violating community guidelines" | news.ycombinator.com | 2024-09-05
In your comment you said "the first video taken down from LTT", which is not true.
Yes, this might be the first video removed for _one specific reason_. This also might be the first video where he broke external links policy[1]
> Links to websites, apps, or other sources that give unauthorized access to audio content, audiovisual content, video games, software, or streaming services that normally require payment
as he left a sequence of links to "alternative YouTube UI"[2]
> YouTube Alternative Frontends - FreeTube - https://freetubeapp.io/ - LibreTube - https://libretube.dev/ - Yattee - https://github.com/yattee/yattee - Invidious - https://invidious.io/ - GrayJay - https://grayjay.app/ - Newpipe - https://newpipe.net/
[1] https://support.google.com/youtube/answer/9054257?hl=en&ref_...
[2] https://www.youtube.com/watch?v=qHwP6S_jf7g
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I just want to put out Loop Habit Tracker ( https://github.com/iSoron/uhabits ). Its open source, ad free and has the option to start the day at 3 am. I am very happy with this solution.
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Alerter is an open-source Android alerting library developed by Tapadoo source: https://github.com/Tapadoo/Alerter. that provides a flexible and customizable way to create alerts in your Android applications. It offers a wide range of features, such as custom layouts, animations, durations, and more. I just discovered it and now i am creating this guide that will also take you a step-by-step tutorial on how to use the Alerter library to create engaging and informative alerts for your users.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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Foodium
🍲Foodium is a sample food blog Android application 📱 built to demonstrate the use of Modern Android development tools - (Kotlin, Coroutines, Flow, Dagger 2/Hilt, Architecture Components, MVVM, Room, Retrofit, Moshi, Material Components).
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Inure
An elegant and beautiful premium Android app manager for rooted and non-rooted devices with a built-in terminal, analytics, debloat, stats and various other features with an custom theme engine, developed with purely custom UI design and reproducible build.
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book-story
Book's Story — Material You eBook reader built with Jetpack Compose. Free & Open source & Ad-free, with extensive customization options and support for multiple file formats.
Book Story on Android is a much more modern FOSS eBook reader and supports other formats too.
https://github.com/Acclorite/book-story
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reference-browser
A full-featured browser reference implementation using Mozilla Android Components.
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AbleMusicPlayer
🎵 A Youtube Music like app with a Spotify like design - ad free, open source, and deprecated.
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Scarlet-Notes
[Discontinued and Unsupported Project] Simple yet powerful rich note taking android application, with a lot of flexibilty of usage
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Kotlin App discussion
Kotlin App related posts
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Signal may silently fall back to "unsealed sender" message if server returns 401
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Twitter's new encrypted DMs aren't better than the old ones
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Magic of software; what makes a good engineer also makes a good engineering org
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How the Atlantic's Jeffrey Goldberg Got Added to the White House Signal Chat
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The Practical Limitations of End-to-End Encryption
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Apple will soon support encrypted RCS messaging with Android users
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Rely less on Third-Party Services
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A note from our sponsor - InfluxDB
www.influxdata.com | 19 Jun 2025
Index
What are some of the best open-source App projects in Kotlin? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | TextSecure | 27,146 |
| 2 | SpotiFlyer | 10,795 |
| 3 | LibreTube | 10,000 |
| 4 | uhabits | 8,734 |
| 5 | MvRx | 5,898 |
| 6 | Alerter | 5,534 |
| 7 | WordPress-Android | 3,043 |
| 8 | Twidere-Android | 2,746 |
| 9 | MaterialAudiobookPlayer | 2,598 |
| 10 | Foodium | 2,300 |
| 11 | Lightning Browser | 2,265 |
| 12 | Bandhook-Kotlin | 1,860 |
| 13 | Oculess | 1,832 |
| 14 | Fetch | 1,747 |
| 15 | Inure | 1,376 |
| 16 | book-story | 845 |
| 17 | buckwheat | 672 |
| 18 | Photok | 668 |
| 19 | reference-browser | 634 |
| 20 | openhab-android | 624 |
| 21 | AbleMusicPlayer | 608 |
| 22 | Scarlet-Notes | 363 |
| 23 | yetCalc | 318 |
Sponsored
InfluxDB – Built for High-Performance Time Series Workloads
InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
www.influxdata.com