Everything the app does — and what it won't do
HealthLog
Log weight, measurements, activity, food, sleep, water, and a personal medication journal — each independent, each on its own streak, each stored encrypted on your device.
Charts
See your weight and measurements as raw points plus a 7-day trailing average. See activity, food, sleep, and water as daily totals. One metric at a time, so trends stay readable.
Knowledge Hub
Short, factual context on movement, nutrition, sleep, stress, and why logging works — each backed by a link to the real primary source (WHO, CDC, NIDDK, the National Weight Control Registry). No scoring, no personalization, same content for everyone.
Progress Photos
Take or add a photo, add an optional note, and compare any two side by side later. Kept in a completely separate, independently encrypted vault from everything else in the app — never included in a backup file.
Health Plan & Diary
Build your own plan from simple dropdowns — activity, how often, how long — then push it straight to your phone's own calendar for real reminders. Your diary shows what you actually confirmed done, not a guess.
Private & secure by default
A PIN protects the app on your device — no account, no server login. Back up an encrypted copy of your data whenever you want, protected by a passphrase only you know.
What this app deliberately does not do
It doesn't diagnose, score, or interpret anything you log. It doesn't give personalized medical or nutrition advice. It doesn't sell your data or show it to advertisers. If you're looking for a coach that tells you what your numbers mean, this isn't that — talk to a healthcare professional for that. This app is built around one idea, backed by long-running research: consistent logging is one of the most reliable predictors of sustained healthy habits, and that's the one thing we help you do.