Calculate your targets, count your calories and track your weight.
| Time | Total deficit | Fat lost | Weight |
|---|
Based on roughly 7,700 calories per kg of body fat. Expect a bigger drop in week 1 from water, then slower progress as your weight falls. Re-enter your weight every couple of weeks so the numbers stay accurate.
Everything you enter is saved on this phone only. Nothing is sent to an account. A backup copy is kept automatically every time you add or change something, and it restores itself if the main copy goes missing. Clearing Safari's website data or deleting the home screen app removes both.
No weigh-ins yet. Add today's weight above to start your record. Your latest weigh-in also updates "Current weight" at the top.
Your goal weight and current weight are set on the page. Your latest weigh-in updates current weight automatically.
No activities planned yet. Add what you plan to do each week and BodyLab adds the expected calories to your deficit.
No workouts recorded yet.
Estimates use your current weight and standard exercise values (METs), counting only the calories burned on top of resting. Your maintenance number already includes resting, so this avoids counting them twice. A heart-rate watch is more accurate for your body.
Adds your weigh-in days and planned workouts as all-day events with no times. Workouts and weigh-ins repeat on their schedule, so you only add them once. If you change your plan, add the changed item again.
Each button opens Google Calendar with the event filled in. Tap Save there. If your Google account is on your iPhone, these events also show in the iPhone Calendar app.