LogZero: Private Life Tracker
The most private & secure health & fitness app on iOS
What it does
LogZero is a privacy focused tracker app for mood, meds, food, exercise, medication, weight, todos, meditation and more. 100% on-device, no network calls, no telemetry, no ads, no data sharing, no data sales. 100% built with security and privacy baked into it's DNA - and built by an expert security architect. Free to use forever, with additional features behind a fairly priced and transparent pro membership - with optional one-purchase lifetime membership for those who reject subscriptions.
Track mood, meds, food, exercise, meditation, weight & todos privately on iPhone. No account, no cloud, no analytics. All data stays on your device.
The private, all-in-one iOS tracker for moods, meds, food, exercise, meditation, weight, todos and more. Safe, private and secure by default. For LogZero, privacy is not an afterthought - it's in the app's DNA. Comparisons based on analysis performed in mid-2026, comparisons utilize several of the top trackers for each category. Nine tracker modules, one private home. Turn on what you care about; ignore the rest. Log moods, emotions, and activities. None of it leaves your phone. Real-time countdown in the Dynamic Island. Streaks on-device. Today, streaks, weekly deltas, and one quiet insight per day. LogZero computes statistical correlations between your trackers (sleep vs. mood, exercise…from logzero.app
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