True Ring Size: Sizer & Gauge
Measure Finger on Screen
About
Accurately measure your ring size using your phone's screen, with or without a physical ring. Convert sizes across multiple international systems and save measurements for family members. Works completely offline.
What's New in True Ring Size
1.0
July 31, 2026
Developer apps
FAQ
How does True Ring Size measure my ring size?
True Ring Size offers two methods: placing an existing ring on your screen to match its size, or aligning guides on your finger. For optimal accuracy, calibrate the app once with a bank card.
Does True Ring Size work offline?
Yes, True Ring Size is 100% offline. It does not require an internet connection and no data leaves your phone, ensuring privacy.
Can I convert ring sizes with True Ring Size?
Yes, the app allows you to convert between US, UK, EU, Japan, China, and Russia sizing systems. You can also convert by diameter or circumference, in mm or inches.
Can I save ring sizes for multiple people?
Absolutely. True Ring Size allows you to save sizes for the whole family, making it convenient for purchasing surprise gifts or engagement rings.
Does True Ring Size have ads?
No, True Ring Size is completely ad-free. The app is free forever with no subscriptions or in-app purchases.
What is the accuracy of True Ring Size?
The app's on-screen measuring accuracy depends on your device's screen. For best results, calibrate the app with a card and measure twice.
Is True Ring Size suitable for all ages?
True Ring Size has an age rating of 4+, making it suitable for most users. It does not collect any personal data or require an account.
When was True Ring Size last updated?
True Ring Size was last updated on July 31, 2026, with version 1.0. It was initially released on July 30, 2026.
