Track fat and muscle
The scale says you lost 30 pounds. It cannot tell you how much of that was fat, and that is the only question that matters. Bild Health syncs with smart scales through Apple Health and Health Connect to show you fat mass and lean muscle mass as two separate lines you can track.
Lose the fat. Keep the muscle.
Up to 39% of the weight lost on a GLP-1 is muscle.
You can lose weight and keep your muscle, and some people even build it. It takes lifting heavy and eating plenty of protein.
Getting ~150 g of protein while eating 1,800 calories is HARD.
Bild Health makes it EASY.
Two lines, two different verdicts.
One weight line can only fall, hold or rise, and all three can mean something good or something bad. Held apart, the same weeks read plainly: fat falling while lean holds is the outcome you are training for, and fat and lean falling together is the one you started the app to catch.
- Fat mass and lean mass held apart, never merged into one total
- Readings sync in from a compatible body-composition scale through Apple Health and Health Connect
- DEXA scans, from BodySpec or a report PDF, land on the same lines as checkpoints
- Body-fat percentage alongside the masses, not instead of them
- The trend as a per-week rate on every Results tile: direction, not one morning's reading
More features to help you hit your goals
Import DEXA scans
Connect BodySpec or upload a report PDF, and every scan lands on the same chart as your daily readings.
Log GLP-1 doses
Dose reminders, and your estimated medication level from a pharmacokinetic model, at the top of your week.
1-tap protein logging
Four quick-add chips sized to real food. One tap logs a meal, and the same four sit on your watch.
Sources and methodology
On the evidence. No randomized trial has tested sleep, protein or training in people taking a GLP-1 specifically. The evidence comes from energy-deficit studies generally, which is exactly why measuring your own result matters. The protein figures come from controlled energy-restriction work in populations that were mostly younger, often trained and often male.
How body composition is measured. From a body-composition smart scale synced through Apple Health and Health Connect, with DEXA scans as checkpoints, imported from a connected BodySpec account or a report PDF from any provider. The scale supplies cadence and the scan supplies the anchor.
Where these numbers come from
- 01
Diabetes, Obesity and Metabolism · 2026 · Eisa N, Barood O. Diabetes Obes Metab. 2026;28(6):4818–4827. doi:10.1111/dom.70666. PMID 41877354.
- 02
The FASEB Journal · 2013 · Pasiakos SM, et al. FASEB J. 2013;27(9):3837–3847
- 03
Preserving Healthy Muscle during Weight Loss
Advances in Nutrition · 2017 · Cava E, Yeat NC, Mittendorfer B. Adv Nutr. 2017;8(3):511–519
Know what you are losing.
Bild Health keeps fat mass, lean mass, protein, training and your dose history in one record. The lean number is measured from your scale, anchored by imported DEXA scans.
Lose the fat. Keep the muscle.