LeanSignal: Weight & Body Fat

Your weight changed. But did your body composition? Understand trends beyond daily noise. Free to start, with a one-time Pro upgrade. No subscription.

Your weight changed. But did your body composition?

LeanSignal helps you understand weight and body-composition trends beyond everyday fluctuations. Add measurements yourself or import them from Apple Health with optional, read-only access.

Start free with check-ins, Signal Score, trend charts, and measurement history. A one-time LeanSignal Pro Lifetime purchase adds deeper interpretation and reports. No subscription or account required.

WHAT LEANSIGNAL HELPS YOU ANSWER • Is this change likely meaningful, or could it be water and normal variation? • Are weight and body-composition measurements telling the same story? • Is your current goal phase moving in the intended direction? • Is progress continuing, holding steady, or beginning to plateau? • Which measurement would be most useful next?

UNDERSTAND THE SIGNAL Signal Score considers measurement coverage, consistency, recency, and agreement between supporting signals. LeanSignal explains what the evidence supports, where uncertainty remains, and what to measure next—even when the answer is that more information is needed.

MEASURE, COMPARE, UNDERSTAND • Quick scale check-ins and full tape/caliper check-ins with placement guides • Optional, read-only Apple Health import through HealthKit • Weight, waist, body-fat, and lean-mass trends with personal baselines and goals • Pro comparisons, monthly reviews, and cautious forecasts • Pro body-composition tools, including DEXA calibration and private photo comparisons • CSV export and full data backup, plus PDF reports with Pro

PRIVATE BY DESIGN LeanSignal requires no account and contains no advertising or third-party analytics. Your measurements and photos remain stored privately on your device. Apple Health access through HealthKit is optional and read-only, and LeanSignal imports only the information you choose to share. Optional Face ID or device-passcode protection helps keep your data private.

LeanSignal provides informational estimates and trend guidance. It is not a medical device and does not provide medical advice or clinical measurements.