Ring Sizer vs RingMeter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ring Sizer
Easily determine your ring size using your finger or an existing ring. Supports various international sizing systems to help you avoid ordering the wrong size. Measurement results are recommendations and should be verified before purchase.
- Measure finger size
- Measure existing ring size
- Supports international sizing systems (EU, US, UK)
- Quick and simple to use
- Reduces ordering wrong ring sizes
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- Find your ring size from a finger or an existing ring - Supports multiple international size systems (EU, US, UK and more) - Quick and simple to use - Helps reduce ordering the wrong ring size - Measurement results are recommendations. Please verify final size before purchase Subscription required: A paid auto-renewable subscription is required to access all features. Terms of Use (EULA): https://ringsizer.wotaso.com/terms?locale=en-us
RingMeter
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For online jewelry shoppers who need to know their exact ring size before buying. For partners planning to propose who want to measure secretly without asking. For people sorting through inherited or estate jewelry who need to know which ring fits whom. For wide wedding band buyers who need a more accurate fit than standard sizers can give. RingMeter is the ring sizer that just works. → Place any ring flat on the screen and align the on-screen circle to its inner edge to read the exact size → Get instant readings in 14 country standards — US, UK, EU, Japan, China, Australia, India, Canada, Mexico, Italy, Spain, Germany, Russia, Hong Kong, and Brazil — at the same time → Wide band? Enter the band width in millimeters and the app applies comfort-fit compensation automatically, so wedding bands and signet rings fit right → Measure your finger directly with the on-screen ruler when no reference ring is available → Save sizes for everyone — partner, parents, siblings, friends — and never guess again when buying gifts → Track every ring you own in a private inventory: diameter, finger fit, optional reference photo, and personal notes. Perfect for organizing estate jewelry, coordinating surprise gifts, or running a small jewelry business → Export a printable PDF paper sizer with reference circles and a measuring strip, for situations where the phone screen can't be used or to mail an exact size to a jeweler → Calibrate accuracy with a credit card or coin using the international ISO/IEC 7810 standard → No system permissions required. No camera, no microphone, no location, no contacts. → No account. No login. No data ever leaves your iPhone. → No advertisements. No third-party SDKs. No analytics. → Long press a profile to edit, swipe to delete, tap + to add a new family member or ring → Switch between diameter and circumference display modes anytime → Choose your default sizing standard so the size you care about always shows first → Re-calibrate the screen anytime if you switch devices or display zoom settings Built for iOS 17. 100% offline. No data collection. No ads. 3-day free trial included. Terms of Use: https://taxlite.net/ring_meter/terms.html Privacy Policy: https://taxlite.net/ring_meter/privacy.html
Screenshots
Verdict
The clearest difference is update cadence: RingMeter at every 10 days against Ring Sizer's every 3 months. Ring Sizer's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Ring Sizer sells 2 in-app purchases, starting at $9.99 per 7 days and RingMeter sells 4 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Ring Sizer ships an update every 3 months, RingMeter every 10 days. The most recent releases landed on September 7, 2026 and September 11, 2026 respectively.
| Parameter | Ring Sizer | RingMeter |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 56 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Wotaso GmbH | ZHENGQIAO JIANG |
In-app purchases
Ring Sizer
- Ring Sizer Pro Weekly$9.997 Days
- Ring Sizer Pro Lifetime$19.99
RingMeter
- Weekly$1.997 Days
- Monthly$4.991 Month
- Yearly$29.991 Year
- Lifetime$79.99









