WeightSync
A retry queue that never gives up
If Strava doesn't answer, your weight waits safely in line and goes again on its own. Still stuck after 24 hours? You get one tap to push it through.
Step on the scale.Strava already knows.
WeightSync keeps your Strava athlete weight in step with Apple Health, on its own. Your W/kg, climbing efforts and calorie estimates use what you weigh today, not what you typed in last spring.
Download on theApp Store
Free to download. Try Premium free for 7 days, or pay once for Lifetime.
- Works with any scale that saves to Apple Health
- No account to create
- Apple Watch app
- 10 languages
Your W/kg is only as honest as your weight.
Strava divides your power by the weight on your profile. Almost nobody updates that number by hand, so every segment, climb and calorie count quietly drifts. Move the sliders and see how far.
The number you entered when you set up Strava.
Strava shows3.33W/kg
You really ride at3.47W/kg
Set it up once. Then just weigh yourself.
About a minute of setup. After that there is nothing to remember, nothing to type and nothing to open.
Allow Apple Health
WeightSync reads your body weight from Apple Health, where your scale or app already saves it.
Connect Strava
Sign in to Strava once. WeightSync only asks to update your athlete weight, nothing else.
Step on the scale
The new weight reaches Strava in the background. Your next ride or run uses the right number.
Built so no weigh in gets lost.
Automatic when it can be, simple to check when you want to, and patient when Strava is having a slow day.
Any scale, any app
Withings, Garmin, Eufy, Renpho, QardioBase: if it saves weight to Apple Health, it works. No pairing, no extra logins.
See the trend, not the noise
Charts for 7 days, 30 days, 90 days and a year, with a 7 day moving average and trend line. Stop reacting to the number of the day.
Reminders that know you already weighed in
Daily or weekly, at the time you choose. Already done today? You get a well done instead of a nag. Streaks celebrate 7, 30, 90 and 365 days.
Weekly report
Every Monday at 8am: weigh ins, change and trend. One tap opens the chart.
History and CSV export
Up to 365 entries with both the weigh in date and the Strava date. Export for your coach.
kg, lb or stone
Use the unit you think in. Strava always gets the exact value in kilograms.
Strava doesn't know you carry 8 kg on your back.
Rucking, bikepacking, a full hydration pack or a weighted vest: the effort is real, but Strava calculates it for a lighter you. Save named profiles and switch one on with a tap. The load is added only to what Strava receives. Apple Health keeps your clean body weight.
Body weight in Apple Health72.4 kg
Extra weight+ 8.0 kg
Sent to Strava80.4 kg
At home everywhere on your iPhone and Apple Watch.
WeightSync is built with Apple's own frameworks, so it shows up where you already look, and stays out of the way everywhere else.
Apple Watch
Your last weight is already filled in. Tap the tick to confirm or turn the Digital Crown to adjust. Logging from your wrist is free.
Live Activities
Watch each sync land in the Dynamic Island and on the Lock Screen: syncing, on Strava, queued or failed.
Widgets and complications
Your weight and Strava status on the Home Screen, the Lock Screen and your watch face.
Apple Health
One source of truth. Every scale and app that writes to Health feeds Strava with no extra setup.
iCloud backup
New iPhone or a reinstall? Your sync history comes back on its own.
App Store billing
Pay, try free, restore and cancel through your Apple ID. No new account, no card to type in.
Hey Siri, sync my weight with WeightSync.Works in Shortcuts and personal automations too.
Your weight goes to Strava. Nowhere else.
There is no WeightSync account and no WeightSync server keeping your weight history. The sync runs on your iPhone, from Apple Health straight to your Strava profile.
- No account to createSign in with Strava, pay with your Apple ID. That's it.
- Only the permissions it needsBody weight in Apple Health and your Strava athlete profile. It cannot read your activities.
- No ads, no data sellingAnonymous analytics help us fix bugs. They are never linked to you.
- Secure by defaultStrava tokens live in the iPhone Keychain and every request uses HTTPS.
Free to log. Premium to forget about it.
Subscribe monthly or yearly with 7 days free, or pay once and keep Premium for good. No account, no card to type in: it all runs through the App Store.
Free
$0
For logging your weight in Apple Health.
- Read your weight from Apple Health
- Log weight by hand in seconds
- Save to Apple Health
- Apple Watch app
Premium
Best value$9.99per year, about $0.83 a month
$0.99per month
Pay once$14.99Lifetime, yours to keep
- Automatic sync to Strava after every weigh in
- Sync on demand, from the app, Siri or Shortcuts
- Retry queue so no weigh in gets lost
- Extra weight profiles
- Weight chart, weekly report and 365 entry history
- iCloud backup and CSV export
US prices shown. The App Store charges in your local currency. The 7 day free trial applies to the monthly and yearly plans for new subscribers. Cancel any time in iPhone Settings. Lifetime is a one time purchase with no renewal.
Questions athletes ask first.
More answers on setup, syncing, billing and troubleshooting in the full FAQ, or write to support@weightsync.app.
Does WeightSync connect to my smart scale?
No, and it does not need to. Your scale already talks to its own app, and that app writes your weight to Apple Health. WeightSync picks it up from Apple Health. That means it works with any scale or app that saves body weight to Apple Health, including Withings, Garmin, Eufy, Renpho, QardioBase and many others, with no extra pairing.
Do I need to open the app for it to sync?
No. WeightSync listens for new weight entries in Apple Health and syncs in the background. For the most reliable results, keep Background App Refresh on and avoid force closing the app from the app switcher, because iOS treats force closed apps as apps you don't want running.
Why does Strava show today's date instead of my weigh in date?
Strava stores one current weight on your profile, not a dated history, so it records the weight on the day it receives it. WeightSync keeps its own history with both dates: when you weighed yourself in Apple Health, and when the weight reached Strava.
What is free and what is Premium?
Free: reading your weight from Apple Health, manual logging, saving to Apple Health and the Apple Watch app.
Premium: sending your weight to Strava automatically or on demand, the retry queue, 365 entry history, iCloud backup, weekly report, weight chart, CSV export and extra weight profiles.
Where is my weight stored?
In Apple Health on your iPhone, and on your Strava profile once it is synced. WeightSync has no user accounts and no server holding your weight history: the sync runs on your iPhone, straight from Apple Health to Strava. Your Strava access token is kept in the iPhone Keychain and all traffic uses HTTPS.
Make your next ride count with the right number.
Set it up in a minute. Then forget it exists.