Weightics: Weight Trend

One weigh-in doesn't tell the whole story. Follow your weight trend and, with Weightics Sync, your body composition. See progress beyond daily fluctuations.

The scale said you gained 0.8 lb this morning. You did nothing wrong.

Water, salt, hormones and last night's dinner move the number on the scale by a pound or two every single day. Actual body mass moves by ounces. So the reading you panic about at 7am is mostly noise — and Weightics exists to take it out.

WHAT WEIGHTICS SHOWS YOU

• Your trend, not today's reading. An adaptive weighted average that leans on your recent weigh-ins without overreacting to any one of them. • Whether this week actually went anywhere. A weekly rate in pounds or kilograms, so "am I losing weight?" has an answer instead of a mood. • How noisy you personally are. Volatility tells you how far your scale usually swings, so you know when a jump is worth a second look and when it is just Tuesday. • When to trust it. The trend reports its own maturity as your history grows, instead of sounding confident on day three.

BODY COMPOSITION HAS A TREND, TOO

One body-fat reading is not the whole story. With Weightics Sync, bring in the body fat percentage and lean body mass your scale's app saves to Apple Health, then follow a smoothed trend in the Body tab. You do not need to pair that scale with Weightics.

For these imported readings, the estimate comes from your scale. Weightics smooths its history; it does not calculate a new body-composition estimate or make the original reading more accurate.

BUILT FOR PEOPLE WHO WEIGH IN EVERY DAY

• Log weight, waist and a note in a few seconds • Pair a Bluetooth scale and skip the typing entirely • Week, month and three-month views of every weigh-in you have logged • Set a target weight and watch the distance close • Kilograms or pounds, centimetres or inches • Optional daily weigh-in reminders

THE MATH, BRIEFLY

Weightics runs an exponentially weighted moving average with adaptive smoothing, flags statistical outliers with Hampel and 3-sigma filters, removes weekly seasonality (your Monday is not your Friday), estimates the slope with a Theil–Sen fit, and fills in the days you skipped. You never have to think about any of it. You just get a number that behaves like your body does.

PRIVACY

Your weigh-ins stay on your iPhone and are never uploaded. There is no account to create, and no analytics, crash-reporting or advertising SDK in the app. The only thing that ever leaves your device is purchase information, handled by our payments provider. Apple Health sync is optional, works both ways, and stays between your iPhone and the Health app.

WEIGHTICS SYNC

Weightics Sync, available as a monthly subscription or a one-time lifetime purchase, unlocks body-composition trends and changes over time. Apple Health sync requires lifetime access or an active monthly subscription with renewal enabled. Weight logging, weight trends, analysis including Advanced Analytics, history, waist tracking, Bluetooth scale connections and the Body overview remain free.

By subscribing monthly or purchasing lifetime access to Weightics, you agree to Apple's Standard End User License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/