1. Home
  2. 🔧 Utilities
  3. Ring Sizer
Ring Sizer: Risi

Ring Sizer: Risi

Measure, find size and convert

36 ratings
15 reviews
🔧 Utilities
🌟 Lifestyle
Free
In-App Purchases

Details

  • Released
  • Updated
  • October 16, 2024
  • June 7, 2026

Developer

Axel Le Pennec
✨Promote your app ✨
Ring Sizer: Risi screenshot #1 for iPhone
Ring Sizer: Risi screenshot #2 for iPhone
Ring Sizer: Risi screenshot #3 for iPhone
Ring Sizer: Risi screenshot #4 for iPhone
Ring Sizer: Risi screenshot #5 for iPhone
Ring Sizer: Risi screenshot #6 for iPhone
iphone
ipad
🧾$2.99 - $99.99
In-App Purchase↘︎
⭐15
Reviews↘︎
🔄6+ apps
Alternatives↘︎
❓5 answered
FAQ↘︎
📦~ in 1 week
Updates frequency↘︎
🖼️Get Icon
Icons↘︎

About

Accurately measure ring and finger sizes from home, ensuring a perfect fit for any occasion. Convert sizes internationally and save measurements for future use. Ideal for online ring purchases, eliminating guesswork.

✓Measure ring diameter/circumference
✓Measure finger width
✓International size conversions
✓Save measurements
✓Share measurements
Show original description

What's New in Ring Sizer

2026.11

June 7, 2026

Thanks for using our app! We've listened to your feedback and made changes to improve the app. In this update: • The app is now available in 36 languages. If a translation is incorrect or your language is not yet available, let me know! • Various improvements and bug fixes • Performance enhancements Previously: • Added Liquid Glass and iOS 26 support Enjoying the app? Please take a moment to rate and review it on the App Store. It really helps! As always, feel free to reach out by email with feedback, issues, or suggestions. I'm always happy to hear from you. – Axel

More

Subscription plans

Weekly

All Plus features for a week

$6.997 Days
How to cancel Ring Sizer subscription ⁉️
5

In-App Purchases

$6.99

Lifetime

Unlimited access to everything forever

User reviews

Most RecentHighest RatedLowest Rated

Lifetime is fake.

Got the lifetime plan for free a few months ago but now the app nags you to subscribe if you want to use it.
DeservedReviewsDeservedReviews

Fantastic App

This ring sizer is extremely easy to use and actually works! It’s been accurate for several different rings I have tried and you can save the sizes in the app which is incredibly useful. It’s literally the app I didn’t know I needed. Highly recommended ⭐️⭐️⭐️⭐️⭐️
adhdsparklesadhdsparkles

Excellent app!

Very accurate and saves time trying to figure out where that soft tape measure is. Totally recommend. Simple so that's worth keeping as part of your things inn your pocket or purse. Excellent job! I have a few other apps on long this longer if you're interested. Would love to collaborate if possible. Thanks again!

GREAT DEVELOPER!
Show more
ReptevyeReptevye

Good app

great app and very responsive developer.
Toutes les dimensions sont disponibles.
Je recommande.
Merci au développeur
SLIME SNAKESLIME SNAKE

Great app if you are in the jewelry business

Makes dealing with conversions from the standard US ring sizes to all international standards a breeze. I use this on a daily basis for my company, which is a jewelry B2B.
Peleas22Peleas22
See 10 more reviews

Developer apps

Boating Logbook: Skipper
Boating Logbook: Skipper

Boat/ship log book for captain

🗺️ Navigation

(36)

Free $2.99
In-App Purchases
Wetter entlang Route: Wayther
Wetter entlang Route: Wayther

Routenwetter und Routenplaner

☀️ Weather

(51)

Free
In-App Purchases
Time Zone Converter: Tizipizi
Time Zone Converter: Tizipizi

World Clock & Zone Calculator

🔧 Utilities

(57)

Free
In-App PurchasesWith Ads
Timersive: Spatial Timers
Timersive: Spatial Timers

Timers to cook, exercise, work

🔧 Utilities
$0.99
Coloring Page Generator AI
Coloring Page Generator AI

Generate & print custom sheets

🌟 Lifestyle

(4)

Free
In-App Purchases
See developer apps

FAQ

What does the Ring Sizer: Risi app do?

This app helps you accurately measure ring and finger sizes from your smartphone. It offers the same precision as a jeweler, allowing you to measure diameter, circumference, or finger width. You can also convert sizes across various international standards and save your measurements for future reference.

How do I measure my ring size with this app?

You can measure an existing ring by placing it on your screen and using the app's tools to determine its diameter or circumference in either millimeters or inches. Alternatively, you can measure your finger directly by its width if you don't have a ring available.

Is the app free to use?

The app is free to download and use, but to unlock all features and functionality, a one-time in-app purchase is required for lifetime access. This purchase is charged to your Apple account upon confirmation.

What international ring sizes can I convert to?

The app supports seamless conversion between popular global sizing systems, including US/CA/MX, UK/AU/NZ, EU/ISO, JP/CN, and more. This ensures you can find the correct size regardless of where you are shopping.

Who would benefit from using this app?

This app is ideal for anyone buying rings online, whether for engagements, weddings, birthdays, or surprises. It's also useful for professional jewelers, frequent ring shoppers, or anyone who needs to accurately measure ring or finger sizes for themselves or others.