SoulSync: Mood Tracker & Diary

Your mood, beautifully tracked — and 100% private. 🔒

SoulSync turns 10-second daily check-ins into gorgeous charts, a real journal, and plain-English insights. No account. No cloud. No ads. Your data never leaves your phone.

✍️ LOG A DAY IN SECONDS

Rate your mood on a 0–10 scale (decimals welcome — a 7.5 kind of day is real), tag what you did, add notes and photos. Forgot a day? Backdate any entry with the exact date and time.

📊 CHARTS A DATA NERD DREAMS OF

- Mood trend lines with adaptive moving averages

- Hold your finger on any chart to scrub day by day — see that day's average mood and the entry you actually wrote

- Tap a chart to go full-screen, then flip on Fit to zoom the scale to your own range instead of the full 0–10

- Swipe left or right on Statistics to step back through weeks, months, quarters, and years, or pick your own custom date range

- A heatmap calendar of your whole year at a glance

- Day-of-week patterns — when do you really feel best?

- Distributions, correlations, streaks... it's all in there

🔍 DEEP-DIVE ANY ACTIVITY

Tap any activity for its own analytics: its mood distribution, whether it's a "hit or miss" activity, how days with it compare to your usual — and what it tends to pair with. Useful for spotting what actually helps on a rough week, not just what you assume helps.

❤️ SLEEP & HEART RATE, NEXT TO YOUR MOOD (optional)

Connect Health Connect and SoulSync lines up your sleep, heart rate, heart-rate variability, and resting heart rate against how you actually felt, with real correlation numbers, not vibes. Opt-in from Settings, read-only, and like everything else it stays on your phone.

💡 INSIGHTS IN PLAIN ENGLISH

"Days with Exercise average +2.0 mood." "When you're in a rough patch, Social is what's usually followed by a lift." SoulSync reads your data back to you: what lifts you, and what drags you down. Handy for anyone trying to understand mood swings, low-energy stretches, or what's actually behind an anxious day — not a diagnosis, just your own patterns in plain words.

🕰️ YOUR WHOLE STORY, SEARCHABLE

Every entry lives in a scrollable journal timeline you can search by words or activities and filter by mood range — each day shows its entry count and average mood, with a mood line running down the page so you can see the shape of a week at a glance. Tap any entry to edit it. Delete something by accident? Undo it, or pull it back from Recently Deleted for 30 days.

🎨 MAKE IT YOURS

Five themes (Dark, Light, Cherry Blossom, Midnight Blue, Forest), as many gentle daily reminders as you need, drag-to-reorder activities and groups, custom icons.

🔐 PRIVATE BY DESIGN

Everything stays in a local database on your device, not a server. No account, no cloud sync, no analytics, no ads — just a private mood diary that's actually private. Back up to a file anytime; restore on any phone; use it fully offline.

🌍 FREE & OPEN SOURCE

GPL-3.0 licensed — don't take our word for the privacy, read the code:

https://github.com/Antimatter543/mood-tracker

No subscription. No ads. No catch. Just you, your journal, and your own patterns. 💚