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Ring Sizer: Risi

Axel Le Pennec

4.6(36)UtilitiesAges 4+

Get it free on the App StoreOpens Apple's App Store

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About this app

Quickly and easily find the perfect ring size with this ring and finger sizing app—offering the same precision as your jeweler, from the comfort of your home. Whether you're a professional jeweler, a frequent shopper, or purchasing your first ring, Risi ensures the perfect fit for every special occasion—engagements, weddings, birthdays, holidays, or surprises! Measure fingers or rings with ease, whether it's for yourself, a friend, a family member, or anyone special, and convert sizes across international standards. Risi is the go-to tool for anyone buying a ring online, eliminating the fear of choosing the wrong size. • Get the exact size of any ring: Measure the diameter or circumference in either metric (millimeters) or imperial (US inches) units, for yourself or someone else. • Accurately measure finger size: Easily measure finger width, perfect for when you don't have a ring on hand. • International size conversions: Seamlessly switch between popular global sizing systems (US/CA/MX, UK/AU/NZ, EU/ISO, JP/CN, and more) while maintaining accuracy. • Save measurements: Keep ring and finger sizes saved for future reference and easy access. • Share measurements: Share size info with jewelers or friends via text, email, or social media. No more guessing! With Risi, shop confidently and experience the joy of buying or giving a perfectly sized ring that will be cherished forever. Make special moments unforgettable with a ring that fits just right. To unlock all features and functionality, you can make a one-time in-app purchase for lifetime access (no subscription). This purchase will be charged to your Apple account at the time of confirmation. Privacy Policy: https://ringfitter.alpennec.com/privacy Terms and Conditions: https://www.apple.com/legal/internet-services/itunes/dev/stdeula

What's new

Version 2026.14 · Oct 28, 2026

Thanks for using the app! We’ve listened to your feedback and polished a few things to make your experience even smoother. What’s new in this version: • Full support for iPhone Duo • Performance optimizations for a faster experience • General bug fixes and stability improvements Recently introduced: • Full support for iOS 27 and iPadOS 27 • Now available in 36 languages! (If you spot a translation error or want your language added, feel free to drop me a line) Enjoying the app? A quick rating or review on the App Store makes a huge difference and really helps support independent development! Have questions, feedback, or ideas? Send me an email—I’d love to hear from you. – Axel

In-app purchases

The most popular purchases on the App Store.

  • LifetimeConsumable$99.99
  • WeeklySubscription · 3 days free trial$4.99 / 7 days
  • WeeklySubscription · 3 days free trial$5.99 / 7 days
  • LifetimeConsumable$2.99
  • LifetimeConsumable$4.99
  • WeeklySubscription · 3 days free trial$6.99 / 7 days
  • WeeklySubscription · 3 days free trial$7.99 / 7 days
  • LifetimeConsumable$19.99
  • WeeklySubscription$6.99 / 7 days
  • LifetimeConsumable$6.99

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