Delta: TDEE Tracker

Apple Health Delta now writes your daily weight and empirical TDEE baseline to Apple Health. Enable it in Settings → Write to Apple Health. Only one record per day is written — saving multiple times updates the existing entry rather than creating duplicates. Reminders Two separate daily reminders are now available in Settings — one for your morning weigh-in, one for your evening calorie log. Each has its own toggle and time picker so you can configure them independently. Journal improvements The journal now shows every day from your first entry to today. Missing days are clearly marked and can be filled in retroactively — including weight, with an interpolated estimate shown as a starting point. This makes it easy to catch up on days you forgot to log. Progress charts Weight and calorie charts now show a trend line. Start weight, current weight, and total change are shown below the weight chart. TDEE Calculation view The calculation detail view has been cleaned up. Once your estimate is fully empirical, redundant status text and the blended TDEE line are hidden. Lifetime progress and distance to goal are now shown alongside the window delta. About Delta The How It Works section now accurately describes Delta's actual calculation method, including the formula-to-empirical transition timeline and the 28-day smoothing window. Under the hood Shared data layer, static date formatters, and extracted calculation helpers — all invisible to users but making the app more reliable and easier to maintain going forward.