Glasses
Hold your iPhone at arm’s length and scan your face. AI Sizer measures head width and pupillary distance, then maps them to a frame size (XS–XL) you can reuse in store or keep on your phone.
AI Sizer for iPhone
One free app for eyewear and footwear sizing. When a store uses AI Sizer, you measure on your phone and matching products appear in their catalog.
How it works
Tap the sizing button on a participating store. Your iPhone opens a quick measure flow. When you are done, the store sees your size and can show only items that fit.
Footwear
Place your foot in view and follow the on-screen guide. AI Sizer measures length and width, then resolves EU and US shoe sizes so partner stores can show only pairs that fit — or a custom 3D shoe can be generated from the same scan.
Private by design
Face and foot scans run on your iPhone in real time — raw camera frames stay on the device. The app only shares the size labels a store needs to filter its catalog, which keeps your measurement data private.
Measure without a full download
Many stores let you measure right from Safari using a lightweight App Clip — a small preview of the app that opens from the store link. You can complete a scan and return to shopping without installing anything. If you measure often, download AI Sizer from the App Store to save profiles on your phone.