Dashboard
See your latest measurements and a quick view of recent activity. Values come from the measurements saved on this device.
Log
Select a date, then open each measurement you took. You do not need to log every measurement each time—just log what you actually measured. When a measurement shows no change from the last time, leave the displayed value as it is and tap Log. Use Notes when you want to remember useful context.
Body-fat calculations
Tap Body Fat % to enter your body-fat percentage directly. To use the built-in calculator, tap Body Fat %, select Body-fat calculator, then choose one of these methods:
- 3-Site (Jackson–Pollock): Uses your age, sex, and three skinfold measurements. Measure the chest, abdomen, and thigh for men, or the triceps, suprailiac area, and thigh for women. Enter each result in millimeters, then tap Use This Result.
- Single-Site: Uses your age, sex, and one abdominal skinfold measurement. Pinch next to the navel with your Lightstuff caliper, enter the fold thickness in millimeters, then tap Use This Result. This method follows the reference chart supplied with the Lightstuff caliper.
- Tape (U.S. Navy): Uses your sex, height, and circumference measurements—no caliper needed. Men enter neck and waist at the navel. Women enter neck, waist at the narrowest point, and hips at the widest point. Check the prefilled measurements, correct them if needed, then tap Use This Result.
Using a different caliper? Compare the Single-Site result with the reference chart supplied with your caliper. If the percentages do not match, follow your caliper’s chart and enter that body-fat percentage directly instead of using the built-in Single-Site result.
Add your height, date of birth, and sex in Settings to make the applicable methods available. Body-fat results are estimates and are not a substitute for professional medical assessment.
Progress
Choose a metric and view daily, weekly, monthly, or custom date ranges. The Previous and Latest cards use your two most recent actual readings for that metric; Change is the difference between them.
Goals
Set a target for any active measurement and optionally add a target date. The app shows whether your latest measurement is getting closer to the target—even when progress means decreasing a value.
Settings
Change units, theme, visible metrics, custom labels and reminder preferences. Hiding or renaming a metric does not delete its saved measurements.
Custom measurements
Use custom labels for body areas or measurements not already listed. The app keeps the label history so earlier records retain the name that applied when you logged them. Deleting a custom label permanently deletes its associated measurements and goal data.