Is your weight loss fat or muscle?
Log your smart scale readings once a week and see how much of your loss is fat and how much is lean mass. Free, no account needed.
Clearing your browser data, using a private window or switching devices erases them, and we can't get them back. Copy a backup now and then.
Add a reading
Readings
Smart scales estimate body fat with bioimpedance, which shifts with hydration. Weigh in the same way each time: same scale, same time of day, before eating.
Want this without the risk of losing it? The app keeps your readings safe in your account, syncs across devices, reads your scale's screenshot for you, and tracks your doses and protein too.
Join the waitlistThe scale number hides what you're losing
GLP-1 medications are very good at taking weight off. In clinical trials, part of that weight came from lean mass, which includes muscle, along with fat.
Muscle keeps you strong, protects your metabolism and makes the weight easier to keep off later. A bathroom scale only shows the total. A smart scale shows more, but its app rarely tells you how the loss splits between fat and lean.
The two things that help most are eating enough protein and doing some strength training. Seeing the split every week tells you whether what you're doing is working.
The full app does more
Join the waitlist and you'll be first to try it.
Your data, safe and synced
Sign in on any phone or computer. Your history is never tied to one browser.
Reads your scale's screenshot
Snap the results screen from Renpho, Withings, Eufy, Arboleaf or any other app. The numbers fill in by themselves.
Tracks any GLP-1
Weekly or daily, shot or pill, brand or compounded. Dose history, reminders and injection site rotation.
Protein from a meal photo
Take a picture of your plate and get a protein estimate, with a daily total and a report you can show your doctor.
Pricing
The tracker on this page stays free. In the app, Free works like this page: you type in your scale's numbers yourself. Pro reads them for you.
Free
- You type in your readings by hand: weight, body fat % and muscle
- Fat vs lean split, charts and warnings
- Saved in your account, on any device
- Dose log: what you took, when and where you injected
Pro
- Everything in Free
- Snap your scale's screen and the numbers fill in by themselves
- Protein estimate from a photo of your meal
- Dose reminders: tap the reminder and your dose is ready to log
- A one-page report for your doctor
Join the waitlist
We'll email you when the app is ready. No spam, and you can ask us to remove you at any time.
Questions
About this tracker
Where are my readings saved on this page?
Only in this browser, on this device. They never reach us. That keeps them private, but it also means clearing your browser data, using a private window or switching devices erases them. Use "Copy backup" now and then to keep a copy you can restore.
Which scales work?
Any scale whose app shows body fat %. Muscle mass is optional. Use the same scale every time so the readings compare fairly.
How accurate is this?
As accurate as your scale. Home scales estimate body fat from an electrical signal that changes with how much water you're carrying, so a single reading can be off by a few percent. The trend over several weeks is much more reliable.
Which medications does it support?
All of them: semaglutide, tirzepatide, liraglutide and others, as weekly or daily shots or as pills, brand name or compounded.
About the app
When will the app be ready?
We don't have a date yet. How many people join the waitlist helps us decide how fast to build it. Everyone on the waitlist hears first.
Where will my data be saved in the app?
In your own account, so your readings are safe if you clear your browser or change phones, and they sync across your devices. You'll be able to download or delete your data at any time, and we will never sell it.
Can I bring my readings from this page into the app?
Yes. Keep logging here, and when the app is ready, paste your backup into it. Your history comes with you.
Do I need to download it from an app store?
No. It opens in your phone's browser and you can add it to your home screen, where it works like any other app, on iPhone and Android.
How does reading my scale's screenshot work?
Take a screenshot of your scale app's results screen and upload it. The app reads the numbers and fills them in, and you check them before saving. It works with any scale app that shows body fat %.
How much will it cost?
The app will have a free plan where you type in your readings yourself. Pro, at $39.99 a year, adds screenshot reading, protein from meal photos, dose reminders and a report for your doctor. Waitlist members get a founding price.
Medical
Is this medical advice?
No. It's a tracking tool. It doesn't diagnose anything or tell you what dose to take. Talk to your prescriber about your treatment.