Ringbox vs Ringa
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Ringbox
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Find your ring size on your screen β 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 β’ Ring on screen β 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. β’ Paper strip β no ring to hand? Wrap a strip of paper around your finger, mark where it overlaps, and lay it on the true-scale ruler. β’ Finger on screen β a quick estimate when you just want a ballpark. We label it honestly as Β±1 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 β 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 β’ Save any ring with a name, the person, the hand and the finger β’ Add a photo and the background is removed on device β a clean cut-out of the ring itself β’ 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 β a Home Screen isn't private. WIDGETS, REMINDERS, PAPER β’ Home Screen widgets: one ring, a grid of your collection, or your size across every system β’ Gift reminders for birthdays and anniversaries, with the size right there in the notification β’ A printable paper ring sizer (PDF, Letter or A4) with a print-scale check, so you know it came out at 100% β’ 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. THE DIAMOND PLAN Ringbox requires the Diamond plan. Measure your ring size once during setup, then choose Weekly, Yearly or Lifetime to use the app: all three ways to measure, every sizing system, the chart and converter, unlimited rings and people, photo cut-outs, secret profiles with Face ID, double-check confidence, widgets, gift reminders, the printable sizer and share cards. Lifetime is a one-time purchase. Weekly and Yearly are auto-renewable subscriptions; the first year of Yearly is offered at a lower price, paid up front. 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/
Ringa
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Find your ring size on your phone, with a ring you already own or with your finger, and any bank card. No sign-up: ring sizing and the full result are always free. HOW IT WORKS 1. Calibrate once. Lay a bank card on the screen and match one line to its edge. Ringa learns the true size of your screen. 2. Measure. Place a ring that fits you on the screen and fit the circle to its inner edge. Smaller and Larger buttons fine-tune it by a tenth of a millimeter. 3. Read your size. The inner diameter in mm and your size in every common system, side by side. Not sure what to do? Each step has a short animation that plays the first time, and How? shows it again. NO RING AT HAND Switch to With your finger. Lay the finger flat on the screen and mark the width at its root and at the knuckle. Ringa estimates your ring size to within one size and says so on the result. When you can, check it with a ring. ONE MEASUREMENT, EVERY SIZE SYSTEM US and Canada, UK and Australia (letters), Europe (circumference), Japan, Switzerland, India, TΓΌrkiye and inner diameter in mm. Handy when you shop from a jeweler abroad. HONEST BY DESIGN A phone screen is not a jeweler's mandrel. Ringa always shows the millimeters, says a ring measurement is accurate to about half a size, and suggests the larger size when you land between two. Tips cover the rest: measure in the evening, warm hands first, wide bands need half a size up. SIZES FOR THE PEOPLE YOU LOVE Save a result to yourself or to someone else and find it again in Settings under People. Planning a proposal or a gift? Borrow one of their rings for a minute, measure it and keep the size for the day you shop. Share the result with the jeweler in one tap. PRIVATE No account. Your calibration, people and sizes stay on your phone. 16 languages. Ringa is free and supported by ads. At most one full-screen ad may appear after you confirm a measurement, before the result. There are no ads while you calibrate or measure, and the result is never locked. Optional: the Jewelry Pack, a one-time in-app purchase, with bangle sizes and no full-screen ads. You can restore the pack on your other devices with the same Apple ID.
Screenshots
Verdict
The clearest difference is ads: Ringbox at none against Ringa's shown. Ringa's advantage is update cadence (every 4 days vs every 2 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Ringbox sells 4 in-app purchases, starting at $6.99 per 7 days and Ringa sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Ringbox ships an update every 2 weeks, Ringa every 4 days. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.
| Parameter | Ringbox | Ringa |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Every 4 days β better |
| Ads | No β better | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad, iPod β better |
| Requires iOS | 16.4 | 15.0 β better |
| Further details β not scored | ||
| Size | 73 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Juan Antonio Veloz Gutierrez | Berkant alkuu |
In-app purchases
Ringbox
- Diamond plan β Weekly7 Days trial$6.997 Days
- Diamond plan β Yearly$24.991 Year
- Diamond plan β Lifetime deal$17.49
- Diamond plan β Lifetime$39.99
Ringa
- Jewelry Pack$3.99









