
Ring Sizer – Perfect Fit
Find your perfect fit in seconds. Measure your ring size accurately using just your iPhone—no extra tools or printing required. Supports multiple international size standards, lets you measure with an existing ring or your finger, and works completely offline for privacy.
Swift
SwiftUI
UIKit
Core Data
Haptics
Widgets
Localization
4.8★
App Store Rating
5.8k+
Downloads
Offline
Private by design
About the Product
I built Ring Sizer to remove guesswork when buying rings online or in‑store. The experience focuses on clarity and speed: align your ring or finger to the guide, get your size instantly, and save profiles for later. Everything works offline, and no measurements leave your device. It also supports various regional/locale sizing systems — US/CA, UK, EU, JP, AU and more — so you can shop confidently anywhere.