Ring Sizer vs Screen Ring Sizer
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
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 โ 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 โ no jeweler visit required. HOW IT WORKS โข On-Screen Ring Sizer โ place any existing ring on your screen and match it to the adjustable circle for an instant reading โข Finger Size Finder โ put your finger on the display and drag the sliders until they touch both sides โข String Method โ no screen to calibrate? Wrap a piece of string or paper around your finger, enter the length, and get your size right away โข Size Converter (free) โ convert any size between US, UK/AU, EU/ISO and Japanese standards, and switch between diameter and circumference in mm, cm and inches โข Instant Conversion Chart โ 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 โข Calibrated to your device โ the on-screen scale is matched to your exact iPhone model โข Every standard covered โ full international ring size chart built in โข Save sizes (Pro) โ keep your partner's, your own, and family members' sizes for future gifts โข Works offline โ measure anywhere, no connection needed โข 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 โข Measure at the end of the day when fingers are at their normal size โข Avoid measuring when hands are cold โ fingers shrink โข If you're between two sizes, choose the larger one โข Wide bands fit tighter โ 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: โข Unlimited measurements with the On-Screen Ring Sizer, Finger Size Finder & String Method (your first measurement is free) โข Saved sizes and profiles for you and your family Subscription Options: โข Weekly: $5.99/week (with a 3-day free trial) โข 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/
Screen Ring Sizer
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Ring Sizer: Find Your Perfect Fit Never guess your ring size again. Ring Sizer turns your phone into a simple, accurate sizing tool โ no trip to the jeweler required. Two ways to measure: Measure your finger directly using your phone screen Already have a ring you love? Lay it on the screen and size it in seconds Why Ring Sizer: Completely free, no in-app purchases, no subscriptions - 100% private, everything happens on your device, nothing is ever uploaded or stored in the cloud - No account or sign-up required - Instant results in US, UK, and EU sizing standards - Simple, clean interface anyone can use
Screenshots
Verdict
The clearest difference is in-app purchases: Screen Ring Sizer at none against Ring Sizer's 2. Ring Sizer's advantage is iOS requirement (17.0 vs 26.5). On price, update cadence, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Ring Sizer sells 2 in-app purchases, starting at $5.99 per 7 days. Screen Ring Sizer asks for nothing beyond the download.
Ring Sizer ships an update every 2 weeks, Screen Ring Sizer every 10 days. The most recent releases landed on October 28, 2026 and October 26, 2026 respectively.
| Parameter | Ring Sizer | Screen Ring Sizer |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Every 10 days โ better |
| Ads | No | No |
| In-app purchases | Yes | No โ better |
| Devices | iPhone | iPhone, iPad โ better |
| Requires iOS | 17.0 โ better | 26.5 |
| Further details โ not scored | ||
| Size | 1 MB | 1 MB |
| Age rating | +4 | 4+ |
| Developer | Burak Guner | Luc Rieffel |
In-app purchases
Ring Sizer
- Weekly Plan3 Days trial$5.997 Days
- Annual Plan$29.991 Year
Screen Ring Sizer
No in-app purchases








