FitMyRing vs Ring Sizer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Ring Sizer
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Planning a surprise proposal but don't know their ring size? Ring Sizer turns your iPhone into an accurate ring measuring tool. Place a ring on the screen, size a finger, or use a simple piece of string — then read the US, UK & EU size in seconds. No printing. No guessing. Your first measurement is free, and the Size Converter is always free to use. Unlimited measurements and saved sizes for your whole family require a Ring Sizer Pro subscription. A free trial is available. Whether you're secretly sizing a partner's ring for an engagement, ordering a wedding band online, or checking your own finger before buying jewelry, Ring Sizer helps you find your size in under a minute — no jeweler visit required. HOW IT WORKS • On-Screen Ring Sizer — place any existing ring on your screen and match it to the adjustable circle for an instant reading • Finger Size Finder — put your finger on the display and drag the sliders until they touch both sides • String Method — no screen to calibrate? Wrap a piece of string or paper around your finger, enter the length, and get your size right away • Size Converter (free) — convert any size between US, UK/AU, EU/ISO and Japanese standards, and switch between diameter and circumference in mm, cm and inches • Instant Conversion Chart — see your measured result across every standard at a glance PERFECT FOR A SECRET PROPOSAL Borrow a ring they already wear (from the correct finger!), place it on the screen, and get the size in seconds. Put it back before anyone notices. The surprise stays a surprise. WHY RING SIZER • Calibrated to your device — the on-screen scale is matched to your exact iPhone model • Every standard covered — full international ring size chart built in • Save sizes (Pro) — keep your partner's, your own, and family members' sizes for future gifts • Works offline — measure anywhere, no connection needed • No printer and no jeweler visit required BUYING JEWELRY ONLINE? Online jewelry returns are often caused by one thing: the wrong size. Measure with Ring Sizer first, then order engagement rings, wedding bands, and everyday jewelry with more confidence. TIPS FOR AN ACCURATE MEASUREMENT • Measure at the end of the day when fingers are at their normal size • Avoid measuring when hands are cold — fingers shrink • If you're between two sizes, choose the larger one • Wide bands fit tighter — consider going up half a size MEASUREMENT STANDARDS SUPPORTED US & Canada, UK & Australia, EU (ISO 8653), Japan, plus raw diameter and circumference in millimeters and inches. Download Ring Sizer today and never guess a ring size again. SUBSCRIPTION INFORMATION Ring Sizer Pro unlocks: • Unlimited measurements with the On-Screen Ring Sizer, Finger Size Finder & String Method (your first measurement is free) • Saved sizes and profiles for you and your family Subscription Options: • Weekly: $5.99/week (with a 3-day free trial) • Yearly: $29.99/year (Best Value) Payment will be charged to your iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period. Privacy Policy: https://bgmobiledev.com/privacy-policy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: FitMyRing at none against Ring Sizer's 2. On price, ads, device support and iOS requirement 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 $5.99 per 7 days. FitMyRing asks for nothing beyond the download.
| Parameter | FitMyRing | Ring Sizer |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | — | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 2 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Epic Star LLC | Burak Guner |
In-app purchases
FitMyRing
No in-app purchases
Ring Sizer
- Weekly Plan3 Days trial$5.997 Days
- Annual Plan$29.991 Year









