Track your body composition over time with measurement logging and progress photo comparisons.
Track your body composition over time with measurement logging, estimated body fat and lean mass, and side-by-side progress photo comparisons.
The Body Composition Tracker lets you log entries over time so you can see exactly how your physique is changing, not just how much you weigh. Each entry captures your weight, height, and key circumference measurements including waist, neck, chest, hips, bicep and thigh, along with optional front, side and back progress photos.
From those measurements the tracker estimates your body fat percentage and lean mass using the U.S. Navy circumference method, giving you a practical number to trend rather than relying on a bathroom scale alone. Because weight alone hides whether a change is fat loss, muscle gain, or water, the body fat and lean mass estimates are what actually tell you whether your training and nutrition are working.
The comparison view puts any two entries side by side so you can visually confirm changes the numbers suggest, and review the trend in your waist-to-height ratio, a marker cardiovascular researchers use as a quick proxy for metabolic risk. All entries are stored locally on your device, so your measurements and photos never leave your phone.
Subscribers can log unlimited entries, attach progress photos, and compare any two snapshots over time. Log your first entry, then come back weekly to watch the trend move.
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