Free
$0For getting the habit started.
- Unlimited mood check-ins
- 7 days of mood history
- On-device sentiment analysis
- Four daily reminders
- Streaks tracking
気分 — Japanese for mood
Find what moves your mood.
Kibun connects your moods to your sleep, habits, and life — so you can finally see why you felt the way you did.
Free forever · 7-day Pro trial · No account required
The vocabulary
Twelve moods. Not five. Not fifty.
Most apps give you four faces. Kibun gives you a vocabulary precise enough to mean something, and short enough to use every day.
- Happy
- Excited
- Grateful
- Calm
- Tired
- Bored
- Confused
- Sad
- Frustrated
- Angry
- Melancholy
- Lonely
Inside the app
Quiet screens. Honest data.
Real screens — no mockups. Built to fade into your day so the patterns can come forward.
01Log a mood in ten seconds.
Tap a colour. Add a note if you want to. Track energy and focus if you're going deeper.
02Your month, at one glance.
A soft heatmap of your days. Tap any date to revisit how you felt — and what you were doing.
03Habits, sleep, and mood — together.
Track the things you suspect are moving the needle. Kibun does the correlation math for you.
04AI reflections when they help.
Weekly and monthly reports written for you. Resilience score, pattern insights, year-in-mood recap.
What you actually get
A mood tracker that connects the dots.
Logging is the easy part. The work is in seeing which habits, hours, and events actually shift you.
- 01Pro
Habit × mood correlations
Track sleep, exercise, social time, or anything else. Kibun runs the math and shows you what's really moving the needle.
- 02Pro
Resilience score
A 0–100 score based on how quickly you bounce back from difficult moods. Trends over weeks and months, not minutes.
- 03Pro
Life-event tagging
Mark the moments — a move, a fight, a trip, a deadline. Kibun shows how each one rippled across your moods.
- 04Pro
AI weekly & monthly reports
Personalised narratives written from your profile and entries. Raw notes never leave your device.
- 05
Ten-second check-ins
Pick a mood, add a note if you want to. Four daily reminders, customisable per slot.
- 06
Anonymous, private, yours
Use the entire app without an account. On-device sentiment analysis. No advertising trackers. Ever.
How it works
Three habits. One bigger picture.
- 01
Log
Tap a mood. Track a habit you care about. Add a sentence if you'd like — the note never leaves your device unanalysed.
- 02
Reflect
Receive a gentle, personalised prompt — only when it might help. Write back if you want to, skip if you don't.
- 03
Connect
Each week, Kibun shows what actually moved your mood — your sleep, your habits, the events you tagged. No spreadsheet needed.
Pricing
Free forever. Pro when you want more.
Start free, no account needed. Pro is a 7-day free trial, then a simple monthly or yearly plan — cancel any time. See your local price in Google Play.
Pro
Monthly or yearly · price shown in Google Play
For going deeper.
- Everything in Free, plus:
- Habit × mood correlations + resilience score
- AI weekly, monthly & year-in-mood reports
- Life-event tagging + impact analysis
- Custom moods + energy & focus tracking
- Adaptive reminder times (Smart Timing)
- CSV export + shareable mood cards
- Calm exercises + streak freezes + achievements
Subscriptions managed through Google Play. Cancel anytime in Play Store settings.
Is Kibun a medical app?
No. Kibun is a wellness and self-reflection tool. It is not a medical device and does not diagnose, treat, or prevent any condition. If you are in crisis, please contact a local emergency line or trusted clinician.
Do I need an account?
No. Kibun is anonymous-first — you can use the entire app without creating an account. Your data lives on your device. Optional Pro features sync via Supabase if you sign in.
Which platforms is Kibun on?
Kibun is available on iPhone, iPad, and Android — and runs first-class on tablets.
Can I export my data?
Yes. Pro users can export their full mood history as CSV at any time, including notes, habits, and life events.
How is my privacy handled?
Anonymous-first. Raw note text is never sent to the AI — we only use anonymized signals for weekly and monthly reports. Analytics are privacy-first via Vexo. Full details on the privacy page.
How do I cancel?
Subscriptions are managed by Google Play (Android) or the App Store (iOS). Cancel from your store profile under Subscriptions, at least 24 hours before your trial or period ends to avoid the next charge.
From the journal
Writing about moods, habits, and what actually helps.
Practical guides, product updates, and longer reads from the Kibun team.
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Start small. See what surfaces.
Free to try, no account needed. Ten seconds a day.
7-day Pro trial · Cancel anytime · Works offline