Scalin: Weight Tracker
Gleb Matsko Health & Fitness iPhoneiPadiPod touchApple Watch
Scalin: Weight Tracker is a free Health & Fitness app for iPhone and iPad by Gleb Matsko. Requires iOS 17.0. Updated October 2, 2026.
- Price
- Free
- on the App Store
- Size
- 29 MB
- Age 4+
- Updated
- Oct 2
- 2026 · v1.2.0
Screenshots
About Scalin: Weight Tracker
A little buddy for the ups and downs. Scalin is a weight tracker with a small companion and a big personality. Log your weigh-ins, follow a smoother trend, and get a little perspective when today's number surprises you. YOUR TREND, WITH CONTEXT See how your weight is changing over time. Scalin smooths your weigh-ins into a trend estimate, called "true weight" in the app, so you can look beyond a single reading. Track your weekly pace, set a goal, and explore an estimated range for a future date as your history builds. A COMPANION WITH CHARACTER Your little buddy follows you around the app and comments on your progress, pauses, and daily ups and downs. Choose Supportive, Snarky, or Merciless to find your kind of company. Change the tone whenever you like, or mute a line that doesn't land. MAKE ROOM FOR THE WHOLE JOURNEY Track weight loss, gain, or maintenance in kg or lb. Review your history, add a missed weigh-in, and edit an entry when you need to. Record notes and possible reasons for a change, then look back at the bigger picture. Celebrate milestones along the way. ON A WEEKLY GLP-1? Turn on shot tracking during setup or in Settings. Today marks your shot day, your chart marks each shot, and after a few weeks Scalin shows which days after a shot your weigh-ins run lowest and highest against your trend. Log the dose, the injection site (Scalin suggests the next one) and how the days after felt. Add an optional shot-day reminder. Scalin keeps the record; decisions about your medication stay with your clinician. FITS INTO YOUR MORNING - Log on iPhone, or use the Digital Crown on Apple Watch. - Connect Apple Health to import weight history and save new weigh-ins, with your permission. - Bring in readings from a smart scale through Apple Health if its app saves weight there. - See your trend in widgets, Apple Watch complications and, if you like, the Dynamic Island. - Ask Siri about your trend, or ask Scalin directly, answered on your iPhone. - Set an optional weigh-in reminder. KEEP YOUR NUMBER PERSONAL Widgets keep your absolute weight hidden by default. Add an app lock with Face ID, Touch ID, or your device passcode, and export your history as CSV whenever you need it. No Scalin account is required. Scalin focuses on weight tracking. It doesn't count calories, calculate BMI, prescribe a diet, or advise on medication. Trends and forecasts are estimates based on your entries, not medical measurements or guarantees of future results. SUBSCRIPTION A subscription is required to use Scalin after setup. Available plans, prices, and any free trial you are eligible for are shown before purchase. Payment is charged to your Apple Account when you confirm a purchase, or at the end of an applicable free trial. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends. Manage or cancel your subscription in your Apple Account settings. Terms of Use: https://scalinapp.com/terms Privacy Policy: https://scalinapp.com/privacy
What’s new
Version 1.2.0 · Updated October 2, 2026
Halloween, a GLP-1 companion, a weekly read-back, and Scalin in a few new places. - Halloween dress-up: weigh in on 3 days between Oct 23 and Nov 1 to earn a little pumpkin, or on 6 for a witch's hat. - On a weekly GLP-1? Mark your shot day, log each shot (dose, site and how the days after felt) and see what your weight does between shots. Turn it on in Settings › GLP-1 shots. - Your week: in the first days of each week, Today reads back the one before — what your trend did, how far the scale wandered around it, and your loudest morning. - Share your line: turn your trend into a short vertical video for Stories, Reels and TikTok. Only the change is in it, never your weight. - Ask Scalin: ask about your weigh-ins — "When was I last below 80?" — answered on your iPhone with Apple Intelligence. - Siri: "How's my trend in Scalin", "How was my week in Scalin" or "Ask Scalin". Spoken answers keep your weight private unless you show it in widgets. - Dynamic Island: let Scalin keep you company there. Turn it on in Settings › Widgets & Watch. - Scalin now speaks German, Spanish and French.
App privacy
The developer, Gleb Matsko, reported these privacy practices to Apple.
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Identifiers: User ID, Device ID
- Usage Data: Product Interaction, Other Usage Data
- Diagnostics: Crash Data, Performance Data, Other Diagnostic Data
Used for: Analytics, Product Personalization, App Functionality
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Health & Fitness: Health
Used for: Product Personalization, App Functionality
Alternatives to Scalin: Weight Tracker
Looking for apps like Scalin: Weight Tracker? Here are 6 similar apps on the App Store. The highest rated is Hairalyze: Smarter Haircare (5.0/5), and all 6 are free to download.
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Weight and Body Tracker
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Hairalyze: Smarter Haircare
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Love+ Self Care
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Weighed
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Steps Tracker: Walking Coach
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Scalin: Weight Tracker | – | Free | October 2, 2026 | |
| MedsMate: Medicine Tracker | – | Free | Mar 4, 2026 | Compare |
| Weight and Body Tracker | – | Free | Apr 13, 2026 | Compare |
| Hairalyze: Smarter Haircare | 5.0 / 5 (15) | Free | Jun 3, 2026 | Compare |
| Love+ Self Care | 1.0 / 5 (1) | Free | Sep 2, 2024 | Compare |
| Weighed | 5.0 / 5 (3) | Free | Oct 11, 2026 | Compare |
| Steps Tracker: Walking Coach | 5.0 / 5 (1) | Free | Jul 21, 2026 | Compare |