A new way to know yourself
Track your mood.
Keep your data.
Moodly is a thoughtful mood journal for Android. No cloud sync, no AI, no telemetry. Any backup destination is yours: your Dropbox, your files.
Why Moodly
A mood tracker that respects you.
Most journaling apps ship your feelings to a server, sell you "AI insights" you can't audit, and lock your data behind a subscription. Moodly does none of that. The whole app runs on your phone. The analytics run on your phone. Your notes never leave it.
Truly private
No account, no telemetry, no third-party SDKs. The diagnostic log explicitly excludes mood data.
Fast and quiet
Local SQLite storage. Insights compute in milliseconds. No spinners while the network thinks.
Evidence-grounded
Every chart cites the psychology literature it's based on. Hedged copy when the data is thin.
What's inside
Six insights you cannot get from a single number.
The affect grid, not a 5-star slider.
Russell's circumplex model: place a dot on a valence × arousal grid. Captures the difference between "tense" and "tired" instead of squashing both into "I felt bad."
A year in pixels.
365 small squares, coloured by mood. Spot seasons, weeks-long dips, the shape of a year you've actually lived.
Trend lines that hedge.
7-, 30-, 90-day windows. Sleep duration and step counts can overlay as thin strips when you connect Health Connect — opt-in, read-only.
The tag map: what lifts your mood, what drags it down.
Tag entries with people, topics, or activities. Tags plot at their average valence × arousal, with rings showing whether they pull your mood up or down.
Sleep, fitness, cycle — when you want them.
Mirror Health Connect data on your phone. Mood by sleep duration. Workout days vs rest days. Cycle phase overlays. All three off by default. Sleep and cycle data can also be added manually.
Your data, your Dropbox
Backup to your own account.
Optional manual backups go to a private folder inside your own Dropbox (Apps/media.knoxx.moodly.app). Each backup is encrypted on your phone with a password you choose - Moodly never stores it. Moodly has no server and cannot read anything else in your Dropbox.
For sessions
A PDF your therapist can read in 90 seconds.
One tap exports a clinically-styled PDF: session brief, since-last-session changes, mood neighbourhoods, risk flags, verbatim note excerpts from your most-extreme moments. Sleep and cycle appendices are opt-in.
- No cloud upload — the PDF lives on your device.
- Share via the system sheet, AirDrop, or print.
- Encrypted full-data backup separately, password-protected.
Privacy
Your phone is the only server.
Moodly has no backend. It can't see your data because the data never travels. Even crash logs are local — the diagnostic file explicitly skips mood, sleep, cycle, and fitness entries.
No analytics SDK.
No Firebase, no Sentry, no Mixpanel. The APK contains zero tracking code.
No AI inference.
Insights are deterministic math, not a model.
Health Connect is opt-in.
Read-only mirror, never written back. Disable the toggle, your data wipes from Moodly.
Encrypted backups.
AES-256-GCM with a password you set. Lose the password and not even we can recover it.
Speaks your language.
Fully localised into eight European languages.
Try it.
Moodly ships as a sideload APK for Android. No account. Download, install, log a mood, see what happens.
Android 8 or newer. ~75 MB.