Skinfold: Estimates & Trends

No account or internet connection required. Estimate body fat from three-site skinfold readings and review trends stored only on your device.

Estimate body fat percentage from three-site skinfold readings and review changes over time on your device. No account is required.

REPEAT READINGS FOR A CLEARER CHECK Enter at least two readings for each site, and Skinfold calculates the average automatically. If readings from the same site differ widely, the app suggests measuring again to help you review the result.

CLEAR MEASUREMENT GUIDANCE See the Jackson–Pollock three-site locations for the selected sex, together with practical instructions that help you measure in a consistent way.

RESULTS AND LOCAL TRENDS Skinfold uses the Jackson–Pollock three-site body-density equations and the Siri equation for converting body density to body fat percentage. It also shows general reference ranges. Save a result when you choose, then review changes in local history.

PRIVATE AND OFFLINE No registration, ads, analytics, cloud sync, or tracking. Calculations and saved history stay on your device and are not sent to the developer. Core features, the Privacy Policy, and Support are available offline.

SCOPE AND IMPORTANT INFORMATION The source equations cover men ages 18–61 and women ages 18–55; results for women over 40 should be interpreted with care. The app does not calculate an estimate when the sum of the three site averages exceeds 120 mm. Skinfold estimates can vary with site placement, technique, calipers, individual differences, and the limits of the equations. This app is for general fitness and personal tracking only. It is not a medical device and does not provide medical advice, diagnosis, or treatment.