Ring Sizer vs FitMyRing
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 at home using your finger or an existing ring. Get results in multiple international sizing systems instantly. Save your measurements for future reference.
- Measure with finger
- Measure with existing ring
- Multiple size systems
- Screen-calibrated accuracy
- Save and compare measurements
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Find your ring size in seconds — no trip to the jeweler needed. MEASURE WITH YOUR FINGER Place your finger on the screen and adjust the guide to estimate your size. Great when you don't have a ring to compare. MEASURE WITH A RING Place a ring you already own on the screen and match the circle to the inside edge. The most accurate way to find your size at home. EVERY SIZE SYSTEM YOU NEED See your result in US/CA, UK, JP, diameter (mm & inch), and circumference (mm) — all at once, no switching. SCREEN-CALIBRATED ACCURACY Auto-detects your iPhone model for precise on-screen measurements. SAVE & COMPARE Label and save measurements for yourself, a partner, or family. Come back anytime to check. Free. No ads. No account required.
FitMyRing
Measure a ring's inner size precisely on your iPhone or iPad. Simply place the ring on the screen and adjust a circle to match its inner edge. It provides measurements in multiple systems and nearest sizes.
- Measure ring inner size on screen
- Adjustable circle for precise fit
- Displays diameter, radius, circumference
- Nearest sizes in multiple systems
- Works offline locally on device
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Measure a ring's inner size directly on your iPhone or iPad screen. Place the ring on the display, move the circle into the ring opening, and pinch with two fingers until the circle matches the inner edge. The app shows the diameter, radius, circumference, and nearest sizes for Metric, US/CA, UK/AU, EU/ISO, and JP/CN systems. FitMyRing works locally on your device. It does not use a camera, account, server, cloud sync, ads, or analytics. Measurements are for reference. For expensive purchases or resizing, confirm the size with a jeweler.
Screenshots
Verdict
The clearest difference is ratings volume: Ring Sizer at 9 against FitMyRing's 1. On price, rating, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.9 for Ring Sizer against 5.0 for FitMyRing. That said, the two scores are not equally well evidenced: Ring Sizer has 9 ratings behind it against 1, so its average is the more settled of the two.
| Parameter | Ring Sizer | FitMyRing |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (9 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 9 — better | 1 |
| Update frequency | Every 3 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 4 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | 100 Factories | Epic Star LLC |
Customer experience
Ring Sizer
FitMyRing
In-app purchases
Ring Sizer
No in-app purchases
FitMyRing
No in-app purchases
