Three weeks ago I wrote about building a free, open-source Daylio alternative because I didn't want a subscription between me and my own mood history. Until now, installing it meant downloading an APK from GitHub releases, which is a real barrier for most people.
That barrier is gone. SoulSync is now live on the Google Play Store: get it here.
Nothing about the app changed with the move to Play:
- No account. You open the app and log a mood. That's the whole onboarding.
- Offline-first. Every entry lives on your phone. There is no cloud, no sync server, and no analytics SDK phoning home. The Play data-safety label says "no data collected" because there is genuinely nothing to collect.
- Free, no upsell. No subscription, no premium tier, no ads. Mood tracking with heatmaps, timelines, insights, and themes, all included.
- Open source (GPL-3.0). The code that holds your most private data is readable on GitHub. The APK route still works if you prefer installing outside Play.
Why Play matters for a privacy-first app: automatic updates and an install path people actually trust. Telling a friend "search nothing, tap this link, press install" beats explaining what an APK is.
If you try it and it helps, a Play Store review genuinely moves the needle for a tiny open-source project.
Links: Google Play · Source on GitHub · Project page
Top comments (0)