Ring Sizer: Size Finder
Ring Size Measure & Convert
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Find, convert and save ring sizes before you buy online.
Ring Sizer helps you find the right ring size before ordering online.
Measure an existing ring, use a paper or string guide, convert between common size systems, and save sizes for different fingers or people. The app gives practical guidance when you are between sizes, buying wider bands, or choosing a gift ring.
Use Ring Sizer to:
- estimate size from an existing ring
- measure finger circumference with a simple guide
- convert US, EU and UK ring sizes
- save sizes per finger
- make online ring shopping more confident
Ring sizes can vary by brand and ring style, so estimates are intended as a helpful starting point.
Terms of Use (EULA): https://georgevalandis.com/apps/ring-sizer/terms-and-conditions/
Privacy Policy: https://georgevalandis.com/apps/ring-sizer/privacy-statement/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Georgios Avenidis, 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 Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Georgios Avenidis
- Size
- 9.7 MB
- Category
- Shopping
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Ring Sizer Lifetime $8.99
- Ring Sizer Yearly $3.99
- Copyright
- © 2026 Georgios Avenidis