Ring Sizer vs Ringbox
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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Most ring sizer apps use a generic circle on every phone. Screens vary in size, so the number it gives you is a guess. That's why reviews often say, "it said 10, it was 7." This app computes real millimeters from your exact device screen. Lay a ring you already own flat on the glass, size the glowing disc to its inner hole, and read your size. KEY FEATURES - Real millimeters, not screen points: the disc is sized to your device's actual screen, so what you see is the actual size. - Verify accuracy: place a bank card against the screen to confirm the scale in about ten seconds. - Your own size system on every result, free. All nine at once with Pro: US and Canada, UK and Australia, EU and ISO, Japan and Korea, China, India, Germany and the Netherlands, Italy and Spain, Russia. - Accurate results: each reading includes a tolerance band, and the app flags unlikely numbers instead of guessing. - Save one person's sizes free, or every person and finger with Pro, with a measurement log and median reading. - Eight concise guides, all free, cover wide bands, large knuckles, resizing, and daily size fluctuations. WHO IT IS FOR Whether you're buying a ring online, ordering from another country's sizing system, sorting inherited jewelry, deciding whether to resize a band, or discreetly sizing a partner's finger before a proposal, this app gives you a verifiable number. WORKS WITH Wedding bands, engagement rings, signet rings, stacking rings, wide bands, vintage and inherited rings. FREE AND PRO Measuring a ring is free, unlimited, and always will be, and every result shows your own size system plus ISO. The bank-card accuracy check, the tolerance band, all eight guides, and one saved profile are free too. No ads and no account: all your measurements stay on your device. Pro unlocks all nine systems on every result, the no-ring finger method, fit advice for wide bands and large knuckles, the full conversion chart, a printable paper sizer, an on-screen millimeter ruler, a shareable size card, saved sizes for everyone and every finger, and the discreet partner sizing kit. IN-APP PURCHASE Ring Sizer Pro is a one-time purchase, not a subscription. You pay once, nothing renews, and there is nothing to cancel. - Payment is charged to your Apple ID at confirmation of purchase. - The purchase stays on your Apple ID and can be restored on any device from Settings inside the app. - Measuring a ring is free and stays free. Pro is never required to get a size. Terms of Use (EULA): https://abouchfa.com/terms Privacy Policy: https://abouchfa.com/privacy
Ringbox
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Find your ring size on your screen โ no guessing, no printing, no trip to a jeweler. Ringbox turns your iPhone into a true-to-scale ring sizer. Lay a ring you already own flat on the display, match the circle to it, and read your size in every system used worldwide. It takes about ten seconds. THREE WAYS TO MEASURE โข Ring on screen โ the most accurate. Size the circle to the ring's inner edge. A magnifier follows your finger so you can see the exact moment the edges meet, and a haptic tick marks every quarter size. โข Paper strip โ no ring to hand? Wrap a strip of paper around your finger, mark where it overlaps, and lay it on the true-scale ruler. โข Finger on screen โ a quick estimate when you just want a ballpark. We label it honestly as ยฑ1 size and tell you to confirm with a ring or a strip before you buy. EVERY SIZING SYSTEM US & Canada, UK & Australia, Europe/ISO, Japan & China โ plus inner diameter and circumference, in millimeters and inches. Type a size in any system and the converter shows all the others. The full ring size chart runs US 3 to 16 in half sizes. ACCURATE, AND HONEST ABOUT IT Ringbox knows your exact screen size, so the circle is drawn at real physical scale rather than scaled to a guess. If your model isn't recognized, calibrate in seconds against any bank card. Double-check compares two measurements taken different ways and gives you a confidence badge, with a guided fix when they disagree. Between sizes? It tells you to round up, and why. The fit tips are built in, too: wide bands need a little more room, fingers swell through the day, and the ring has to clear the knuckle. A DRAWER FOR YOUR RINGS โข Save any ring with a name, the person, the hand and the finger โข Add a photo and the background is removed on device โ a clean cut-out of the ring itself โข Group rings by person: you, your partner, your mom, whoever SURPRISE-PROOF Sizing a ring for a proposal? Secret profiles are hidden behind Face ID, so their rings, photos and sizes stay out of sight. A reminder about a secret person never shows a name or a size on your Lock Screen, and secret people are left out of widgets โ a Home Screen isn't private. WIDGETS, REMINDERS, PAPER โข Home Screen widgets: one ring, a grid of your collection, or your size across every system โข Gift reminders for birthdays and anniversaries, with the size right there in the notification โข A printable paper ring sizer (PDF, Letter or A4) with a print-scale check, so you know it came out at 100% โข Share cards showing a size in every system, with the ring's photo PRIVATE BY DEFAULT It all happens on your iPhone. Photos are cut out on device, sizes are stored on device, and nothing needs an account or an internet connection. Available in English, Spanish, French, German, Italian, Portuguese, Chinese and Hebrew. FREE, AND THE DIAMOND PLAN Every way to measure is free โ all three methods, every sizing system, the chart, the converter, calibration, and one saved ring with a photo. Measuring itself is never paywalled. The Diamond plan adds unlimited rings and people, secret profiles with Face ID, double-check confidence, gift reminders, the printable sizer, share cards without a watermark, and every Diamond plan feature still to come. Take it as a one-time lifetime unlock, or weekly or yearly if you'd rather. Subscriptions renew automatically unless canceled at least 24 hours before the period ends; manage or cancel in your App Store account settings. Prices are shown in the app and vary by region. Privacy Policy: https://veloz.dev/ringsizer-privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
Ring Sizer and Ringbox are too close to call on the numbers: across 5 compared parameters โ price, ads, in-app purchases and device support among them โ neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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 1 one-off in-app purchase and Ringbox sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.
| Parameter | Ring Sizer | Ringbox |
|---|---|---|
| Price | Free | Free |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPad |
| Requires iOS | 15.0 โ better | 16.4 |
| Further details โ not scored | ||
| Size | 61 MB | 73 MB |
| Age rating | 4+ | 4+ |
| Developer | Abdeljalil Bouchfar | Juan Antonio Veloz Gutierrez |
In-app purchases
Ring Sizer
- Ring Sizer Pro Lifetime$24.99
Ringbox
- Diamond plan โ Weekly$4.997 Days
- Diamond plan โ Yearly1 Year trial$34.991 Year
- Diamond plan โ Lifetime deal$17.49
- Diamond plan โ Lifetime$39.99









