Find out what really lifts your mood.
Log how you feel in about ten seconds. Luci connects it to who you were with and what you did, and shows you the patterns you'd never spot on your own.
Free on iPhone and Android.
Bad days don't come out of nowhere.
But when you can't see what's behind them, you end up repeating the same weeks: the same late nights, the same draining plans, the same Sundays that feel heavy, without knowing why. You're left guessing about your own life.
The non-obvious patterns
What lifts your mood isn't always what you'd guess.
Luci lines your tags up across weeks and shows you what keeps turning up next to your best and worst days.
Examples. Yours will look nothing like them.
- Example insight: Your Sundays average lower than your Wednesdays.
- Example insight: Parties lift your mood on the day. The day after averages 0.9 lower.
- Example insight: Cooking at home lifts your mood by 0.7 on average.
- Example insight: Calls with your sister turn up on six of your ten best days.
- Example insight: Days you spend outside average 1.2 higher, rain or shine.
Examples. Yours will look nothing like them.
We know how frustrating it is to feel off and not know why.
Ten seconds a day. Luci does the rest.
01You log
A mood, a few emotions, and who you were with, what you did, where you were. About ten seconds.
02Luci connects
The same tags, followed across every entry you have made, week after week.
03You see it
A stats card shows which activity lifts your mood, and by how much.
Everything you need to understand your days
Logging that takes ten seconds.
Mood, people and activities in a tap. Weather Premium and places are added automatically, and you can log from your Apple Watch.
See what sits beside your best days.
Stats over a month. With Premium, a year, all time and your whole year in pixels.
A journal that's yours.
550+ guided prompts, photos, audio and notes, in your colors and icons.
Your journal is not our inventory.
Works offline, sync is off by default and encrypted when on, and your entries are never sold, shared or used to train AI.
Learn as you go
Understand the patterns you find.
Written by us, free to read.
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Cognitive distortions: a list of 12 common thinking traps, with examples
A list of the 12 most common cognitive distortions, each with a plain meaning and an everyday example, plus a simple way to spot your own thinking traps.
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Mood Tracking
How to track anxiety triggers: caffeine, sleep, people and places in one place
How to track your anxiety triggers, from caffeine and sleep to social situations, in the same place as your mood, so you can see which ones matter and how they combine.
October 29, 2026
Mood Tracking
How to share your mood tracker with a therapist or doctor
How to share your mood tracker with a therapist or doctor: what to bring, how to prepare in ten minutes, and how to talk through your patterns together.
October 26, 2026
Already using another app?
See how Luci stacks up against Daylio, How We Feel and more, one category at a time. The other app wins some of them, and we say so.
More days like your best ones
At Luci, we know you want more good days. To get them, you need to know what actually shapes your mood. The problem is that patterns are almost impossible to spot from inside your own life, so you end up guessing. We believe understanding yourself shouldn't take an hour of journaling a day. That's why we built Luci: log how you feel in ten seconds, and Luci shows you the people, places and habits behind your best and worst days. Download Luci free, stop guessing, and start having more days like your best ones.
Free for good. Premium when you want more.
Free
Most of Luci.
- Mood logging with emotions, people, activities and places
- A journal with guided prompts, photos, audio and notes
- Logging from your Apple Watch
- Monthly stats and insights
- Your own colors, mood icons and scale
- Works offline, private by default
Premium
Everything in Free, plus:
- Automatic weather on every entry
- Your own custom items to track
- Cloud sync across iPhone, iPad, Android and Apple Watch
- Year and all-time stats, with your full Year in Pixels
- Every guided prompt topic
- One subscription works on both iPhone and Android
- Monthly
- Yearly
- Lifetime
Free trial on yearly. Prices shown in the App Store and Google Play.
Start having more days like your best ones.
Free on iPhone and Android.
