Ring Sizer: Find Your Size
pentarab Tools In-app purchases Contains ads
Measure your ring size on screen at true size — calibrate with a bank card.
- Downloads
- 10+
- on Google Play
- Price
- Free
- In-app purchases
- Updated
- Sep 14
- 2026 · v1.0.0
Screenshots
About Ring Sizer: Find Your Size
Measure a ring at true physical size, right on the screen. Calibrate once with any bank card, then lay a ring on the display and slide the circle until it meets the inside edge of the band.
HOW IT WORKS
• Match the on-screen outline to a bank card — every card is the same standard size
• Lay your ring on the screen and adjust the circle to the inside of the band
• Read out the US size and the inner diameter in millimetres
• Works fully offline — no account, no sign-up, nothing collected
Calibration is what makes the reading real: it teaches the app how large a millimetre is on your particular screen. Without calibrating, the size shown is only an estimate. Use it to narrow down a size, and confirm with a jeweller before you buy or resize a ring.
The free version covers the middle 7 US sizes. The one-time Premium Unlock opens all 21 sizes and keeps your calibration saved between sessions.
HOW IT WORKS
• Match the on-screen outline to a bank card — every card is the same standard size
• Lay your ring on the screen and adjust the circle to the inside of the band
• Read out the US size and the inner diameter in millimetres
• Works fully offline — no account, no sign-up, nothing collected
Calibration is what makes the reading real: it teaches the app how large a millimetre is on your particular screen. Without calibrating, the size shown is only an estimate. Use it to narrow down a size, and confirm with a jeweller before you buy or resize a ring.
The free version covers the middle 7 US sizes. The one-time Premium Unlock opens all 21 sizes and keeps your calibration saved between sessions.
What’s new
Version 1.0.0 · Updated September 14, 2026
Initial release.
Alternatives to Ring Sizer: Find Your Size
Looking for apps like Ring Sizer: Find Your Size? Here are 6 similar Android apps on Google Play. All of them are free to download.
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Korio: Korean & TOPIK Grammar
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Artoon: AI Art & Anime Filter
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StickerForm: Sticker Maker
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Gwansang: Face Reading
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1% Habit: 15 Min Day Tiles
| App | Rating | Price | Installs | Last updated | Compare |
|---|---|---|---|---|---|
| Ring Sizer: Find Your Size | – | Free | 10+ | Sep 14, 2026 | |
| Korio: Korean & TOPIK Grammar | – | Free | 1+ | – | Compare |
| Artoon: AI Art & Anime Filter | – | Free | 1+ | – | Compare |
| StickerForm: Sticker Maker | – | Free | 10+ | – | Compare |
| Gwansang: Face Reading | – | Free | 1+ | – | Compare |
| Wobble: Jelly Photo Effect | – | Free | 100+ | Sep 15, 2026 | Compare |
| 1% Habit: 15 Min Day Tiles | – | Free | 1+ | – | Compare |
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