sizeref – Size Check
Find your size before you buy
Only for iPhone
Free
iPhone
Scan your body with your iPhone, then paste a product link or add screenshots to see the size most likely to fit you. Your measurements stay on your phone.
sizeref helps you choose the clothing size that fits you before you buy online.
Measure your body
• Scan with your iPhone's camera: prop the phone up, stand back and follow the steps on the screen and the spoken ones. sizeref measures you on the phone. The pictures are never saved or sent; only the measurements are kept.
• Or use a front and a side photo from your library, or type in measurements you took with a tape.
• Each measurement is shown as a range, and the Body tab shows a 3D body model made from your numbers.
Check a product
• Paste a product link, or add up to 3 screenshots of the product page and its size chart.
• sizeref reads the shop's own size chart and product details, compares them with your measurements, and shows the size most likely to fit, how sure it is, and how the size fits each part of your body.
• If you are between two sizes, sizeref asks how you like your clothes to fit, and remembers your answer.
• If a shop's page can't be read from its link, sizeref asks for screenshots instead.
Gets better with you
• Save checks to History, and tell sizeref how things fitted after you buy.
• Optional reminders ask whether you bought something and how it fit. Your phone makes them by itself.
• Share a size card through the share sheet, with only the details you tick.
Private by design
• Your measurements, sizes and history stay on your phone and in your phone's own backup.
• To read a product, sizeref sends only its link or your screenshots to sizeref's reading service and to Anthropic's Claude. The service also gets a random install number, which only counts reads. The app asks your permission first, and you can withdraw it in Settings.
• No account, no ads, no tracking.
• Delete everything from the phone at any time: Body → Settings → Privacy.
Good to know
• Product reading needs an internet connection and is limited to 10 products a day on each phone. If the month's reading budget runs out, reading pauses until the next month, and sizeref tells you. The scan works without a connection.
• Some shops list garment measurements instead of body measurements. sizeref shows that chart but can't suggest a size from it yet.
• Sizes are estimates for choosing clothes. sizeref is not a medical device.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Siddharth Singh, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- User Content
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- User Content
- Browsing History
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Siddharth Singh
- Size
- 40 MB
- Category
- Shopping
- Compatibility
Requires iOS 15.5 or later.
- iPhone
Requires iOS 15.5 or later. - iPod touch
Requires iOS 15.5 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Copyright
- © 2026 Siddharth Singh