ScalinTrend
See the whole picture.
Zoom out from today to weeks and months. See your recent pace alongside the readings behind it.
Weight tracking, with perspective.
Less noise.
More progress.
Your weight changes day to day.
Scalin helps you see where it’s really going.
iPhone · Apple Watch · Widgets
Subscription required. Trial available for eligible users.
A little perspective
A day is a dot.
Progress is a line.
One reading can jump around. A trend gives those readings context, so one morning doesn’t define your week.
Look at the bigger picture
The ups. The downs.
The direction underneath.
Daily readings
Smoothed trend
Example readings
Inside Scalin
Your progress.
Room to breathe.
No calorie counting. No BMI scores. Just your readings, a clearer trend, and the goals that matter to you.
Journey
Give progress a place.
Set a target that means something to you. Follow your pace, check your estimate and celebrate reached goals.
Trends smooth your measurements. Goal estimates use your recent pace and can change as new readings arrive.
A little character
A companion.
With personality.
A little encouragement. A little side-eye. Pick the voice you like, tap when you want to hear it, and mute a line that doesn’t land.
“The scale threw a tantrum. The trend rolled its eyes.”
A taste of its personality.Fits into your day
A quick check.
Then back to life.
Your pace, at a glance.
Home Screen widgets keep your trend nearby. Choose whether they show your weight.
Log it from your wrist.
Record a weigh-in on Apple Watch. Scalin syncs it with the app on your paired iPhone.
Already using Apple Health?
Connect it to bring in your weight history and write new readings back. Or keep logging manually — Health is optional.
Personal means personal
Your weight isn’t
our business.
We don’t run a server that receives your weigh-ins. Your history lives on your devices, with optional Apple Health integration.
No Scalin account
No advertising tracking
Optional usage analytics
How your data is handled
One subscription
All of Scalin.
All your progress.
Trends, goals, your companion, widgets and Watch. Full access on either plan.
Annual
Billed yearlyWeekly
Billed weeklyYour local price and any eligible free trial are shown in the app before you confirm. Plans renew automatically. Manage or cancel in your Apple Account settings.
Find your planGood to know
A few small details.
Is Scalin free?
Scalin is free to download and set up. Access to the main app requires an active subscription or an eligible free trial. The purchase screen shows your price, billing period and any trial before you confirm.
Do I need a smart scale or Apple Watch?
No. You can enter readings directly on your iPhone. If your smart scale writes weight to Apple Health, you can allow Scalin to read it. Apple Watch is an optional companion — install Scalin on your paired watch to sync.
Is the trend my exact weight?
It’s a smoothed average of your measurements, designed to make the direction easier to see. It isn’t a separate measurement or a medical assessment. Goal dates are estimates, not promises.
Can I cancel or restore a subscription?
Yes. Manage it in iPhone Settings → your name → Subscriptions. Paid access continues until the end of the paid period; a free trial may end when you cancel. To avoid a trial charge, cancel at least 24 hours before it ends. Restore purchases from Scalin’s subscription screen using the same Apple Account. More about cancellations and refunds.
Where can I get help?
Email support@scalinapp.com. For a subscription issue, include the Support ID from Settings → About Scalin. You don’t need to send your weight history.