Mood
A private mood tracker that doesn't ask for your name.
Log moods, emotions, and activities. Watch the patterns emerge over weeks, all without anyone else seeing them.
Mood logging is the most intimate kind of data tracking. It's the data that therapists use, that algorithms model behavioral profiles from, that data brokers package and sell to insurers. So we built a mood tracker that ends that chain.
LogZero's mood tracker lets you log a 5-point mood, multi-select from 23 emotions (happy, anxious, content, annoyed, calm, overwhelmed…), and tag the activities and conditions that surrounded the moment, from exercise and socializing to rain and sunshine. You can write as much detail as you want, or nothing at all.
Then the chart shows you 30 days of trend, a 7-day rolling average, and whether you're hitting whatever goal you set. None of it leaves your phone.
What you get
Capabilities
5-point mood scale
From very bad to very good. The granularity therapy apps use.
23 emotions
Multi-select from 23 pre-set emotions, from calm and hopeful to anxious and overwhelmed.
Activities & conditions
23 tags for what surrounded the moment: exercise, socializing, work, even rain or sunshine.
Free-form notes
Up to 2000 characters per entry. Private, never indexed, never shared.
Trend chart
30-day chart with a 7-day rolling average overlay.
Check-in reminders
Up to 10 reminders to log, fired by iOS on your device.
In the app
A closer look
Why this is private
Mental health data is the most-monetized category in mobile. The FTC has fined apps for sharing it. LogZero stores every mood entry in a local database, encrypted at rest by iOS, that never speaks to a server.
Read the privacy postureRelated
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Common questions
Common questions about mood
Is LogZero's mood tracker really private?
Yes. Every mood entry (the score, the emotions, the activities, the notes) is stored in a local database on your iPhone. The app does not transmit your moods to any server. There is no server-side database of LogZero entries.
Why a 5-point mood scale instead of a 1–10 slider or emoji-only?
Five points is the granularity clinical mood instruments use, because it forces a real choice without analysis paralysis. A 1–10 slider sounds precise, but in practice most people only ever use three of the numbers; emoji-only loses the ordering that makes a 30-day trend chart meaningful. Five points (very bad → very good) is fast to log, easy to read on a chart, and lines up with how mood is measured in therapy settings.
Can I use LogZero's mood tracker without an account?
There is no account. There is no signup screen. You open the app and start logging. No email, no password, no anonymous ID. Nothing identifies you because nothing needs to.
Get LogZero on your iPhone.
No account. No commitment. Your data stays yours.