A morning weigh-in and a smoothed weight trend, shown together
Food and drink in one log, with search over the USDA food database
Hydration that responds to the day's activity, not just step count
Activity logging, with an optional correction on tracker-reported burn
A deficit shown as a range with a projected pace, and a floor on recommended intake
The metabolism screen: the formula estimate first and labeled, then your measured number
Show the math on every figure, and a note whenever the number shifts
Progress over any range: weight, calories, protein, hydration and waist
Explainers with citations, and written notes keyed to what actually happened
Full export and import, with storage kept separate per profile
Calibration corrected throughout: smoothing and windows counted in calendar days, an outlier guard, and confidence read from the window actually used
A "why this number?" panel on the metabolism screen, with the arithmetic, what it counts, and what it leans on
A guard for a flat weight trend, where a measured number would only be your own food log read back to you
The stall conversation: what is usually going on when the scale stops, in order of how common each one is, and two questions only you can answer
Precision week: seven days of careful logging, with no streak, no badge and no score attached to it
A projection that bends because a lighter body costs less to run, which is arithmetic the app can show you
Two optional questions about how long you have been at this, so a long dieting history is not read as a fresh start
Optional cycle tracking, off unless you turn it on, for measurement honesty and one safety flag
Quieter streak and daily wording, so a missed day reads as a missed day
The app lives at /track, and can be installed to a home screen