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
The mood tracker that finds what moves you.
Kibun is a private mood tracker app that connects your moods to your sleep, habits, and life events — so you can finally see why you felt the way you did. Ten-second check-ins, no account required.
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 the App Store or Google Play.
Pro
Monthly or yearly · price shown in your app store
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 the App Store or Google Play. Cancel anytime in your 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 through the App Store and on Android phones and tablets through Google Play.
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.
Guides
Learn the craft of noticing.
Research-backed guides on mood tracking, emotion vocabulary, and the habits that actually move the needle.
Mood tracking 101
How to Track Your Mood: A Complete Beginner's Guide
Learn how to track your mood step by step: pick a method, choose consistent check-in times, name what you feel precisely, and read your patterns after 30 days.
Why track at all
7 Science-Backed Benefits of Mood Tracking
Does mood tracking actually work? Seven evidence-backed benefits: emotional self-awareness, trigger identification, better therapy sessions, habit feedback, and more.
Anxiety & tracking
Mood Tracking for Anxiety: Finding Your Triggers Without Feeding the Spiral
How to use a mood tracker for anxiety: log fast, tag context, find your triggers, and avoid the rumination trap. Practical setup with what the evidence says.
Comparison
Kibun vs Daylio: An Honest Comparison (2026)
Kibun and Daylio compared feature by feature: mood vocabulary, habit correlations, AI reports, privacy, pricing. Including the cases where Daylio is the better pick.
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