// see it
What it looks like
The home screen, the heatmap, the distribution, the timeline, the Insights tab, and the themes. All on a real device.
SoulSync logs how you feel and keeps every entry on your phone. No account. No cloud. No tracking. No ads. It's open source, so it's free forever and you can read the code that holds your most private data.
Free Android download · open source · GPL-3.0
No paywall on the stats. No upsell on the themes. The whole app is the free version.
Every entry lives in a SQLite database on your device. Photos too. There is no server to leak, no account to breach.
A finer scale than the usual five faces, with high and low precision so you can tell a quiet good day from a great one.
Backdate entries you forgot to log. Attach activities, notes, and photos. Set one daily reminder if you want a nudge.
Mood trend with an adaptive moving average, day-of-week patterns, month-over-month, and a heatmap of your whole history.
A rigorous with-versus-without comparison shows which activities actually move your mood, not just which ones you do a lot.
An Insights tab reads your data and tells you what it sees in normal sentences, not a wall of charts you have to decode.
Dark, Light, Cherry Blossom, Midnight Blue, and Forest. Pick the one that fits. None of them cost extra.
JSON import and export built in. Your history is a file you control. Move it, back it up, or delete it whenever.
React Native, Expo, TypeScript, GPL-3.0. The code is public. You don't have to trust a privacy promise, you can read it.
The home screen, the heatmap, the distribution, the timeline, the Insights tab, and the themes. All on a real device.
Three short posts on the thinking behind a free, private, no-subscription mood tracker.
Download the Android APK, log your first entry, and the data never leaves your phone.