Comparison

AR Ruler Measuring Tape:Metrix vs Ring Sizer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

AR Ruler Measuring Tape:Metrix

Transform your phone into a precise digital measuring tool using augmented reality. Measure objects, calculate room dimensions, and find ring sizes with ease. Save and share your measurements in various formats.

Highlights
  • Real-time object measurement
  • Accurate ring sizer
  • 3D room scanning
  • Perimeter and square footage calculation
  • Save and share measurements
  • Imperial and metric unit support
Features
Read full description

Try Metrix: Digital Measuring Tape, a convenient and precise measurement tool that transforms your smartphone into a virtual ruler. Designed for accuracy and ease of use, it’s perfect for quick measurements on the go or detailed tasks at home, work, or school. -Real-Time Measurements- • Measure any objects by aligning them with your screen • Find your perfect ring size with an accurate on-screen Ring Sizer tool • Size up furniture for your space before buying • Use augmented reality (AR) technology to scan your room in 3D and get perimeter, square footage, ceiling height calculated automatically • Estimate dimensions during travel or shopping -Multiple Units- Switch seamlessly between imperial (inches, feet) and metric (millimeters, centimeters, meters) systems. -Save & Share- Save measurements in USDZ, STL or PDF formats and share them. Metrix: Digital Measuring Tape offers a sleek, portable alternative to physical rulers, enabling precise measurements at your fingertips anytime, anywhere! SUPPORT We aim to build the finest apps for our users. Help us improve by reporting a bug and requesting a feature via Email: support@mobiletechou.com Premium: To receive full access to Metrix: Digital Measuring Tape features, you will need to subscribe to Premium. Subscription Details Payment will be charged to your iTunes Account at confirmation of purchase. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage auto-renewal in your App Store settings. Privacy policy: https://docs.google.com/document/d/1D9UOVSUg2pUsqzMMWctzFtUQFiFINTt7HeOg_zIoALM/edit?usp=sharing Terms of use: https://docs.google.com/document/d/1SEs22KBmqUFvh7RLZ-GBBM6Wo7-bRwlP8msFpoESll8/edit?usp=sharing

About

Ring Sizer

Measure your finger or an existing ring accurately on your iPhone. Get your ring size in multiple international systems, including diameter and circumference. No printing or extra tools needed.

Highlights
  • Measure existing rings on screen
  • Measure finger without a ring
  • US, UK, EU, and JP sizing
  • View diameter and circumference
  • No printing or extra tools required
  • Quick and simple measurement
Features
Read full description

Find your ring size right on your iPhone. Measure an existing ring on screen or measure your finger without a ring, then get your diameter, circumference, and ring size in US, UK, EU, and JP sizing systems. No printing, paper size charts, account, or extra tools required. Whether you're buying a ring, choosing a gift, or helping a customer find the right size, you can get the measurements you need in seconds. IDEAL FOR • Finding your ring size before buying jewelry online • Measuring an existing ring that already fits • Measuring your finger when you don't have a ring • Choosing a ring size for a gift, engagement, or wedding • Helping customers compare ring sizes across different sizing systems KEY FEATURES ◆ MEASURE AN EXISTING RING Place a ring on your iPhone screen and adjust the on-screen guide to match its inner edge. Get its diameter, circumference, and corresponding ring size. ◆ NO RING? MEASURE YOUR FINGER Don't have a ring to measure? Use the finger measurement flow to find your size without an existing ring or a printed size chart. ◆ US, UK, EU & JP RING SIZES See your result in US, UK, EU, and JP sizing systems, making it easier to shop from jewelers and stores that use different size standards. ◆ DIAMETER & CIRCUMFERENCE Get more than a ring size. View the measured diameter and circumference to help compare sizes and check jewelry measurements. ◆ NO PRINTING OR EXTRA TOOLS Measure with your iPhone without printing a ring sizer or using a ruler, measuring tape, or other equipment. ◆ QUICK & SIMPLE Open the app, choose how you want to measure, and get your result in seconds. No account or lengthy setup required. FREQUENTLY ASKED QUESTIONS How can I find my ring size with my iPhone? You can measure an existing ring directly on your iPhone screen or use the finger measurement flow if you don't have a ring. Can I measure a ring I already own? Yes. Place a ring that fits you on the screen and adjust the guide to its inner edge to determine its measurements and size. How can I find my ring size without a ring? Use the finger measurement flow. It lets you estimate your ring size without an existing ring or a printed ring sizer. Which ring size systems are supported? The app shows ring sizes in US, UK, EU, and JP systems, along with diameter and circumference. Can I use it when buying a ring as a gift? Yes. If you have access to a ring that fits the person, you can measure it on your iPhone and use the result when comparing ring sizes. Is this useful for jewelers and jewelry sellers? Yes. Jewelers and sellers can use it as a quick way to measure rings and compare sizes across US, UK, EU, and JP sizing systems. SUBSCRIPTION INFORMATION Payment will be charged to your iTunes Account at confirmation of purchase. Your subscription automatically renews unless auto-renewal is turned off at least 24 hours before the end of the current period. The renewal cost depends on the selected subscription plan. Your account will be charged for renewal within 24 hours before the end of the current period. You can manage or cancel your subscription in your App Store account settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription. Support Address: support@getringsize.app Privacy Policy: https://getringsize.app/pp Terms of Use: https://getringsize.app/tou

Screenshots

AR Ruler Measuring Tape:Metrix4 screens
Ring Sizer4 screens

Verdict

The call

The clearest difference is rating: AR Ruler Measuring Tape:Metrix at 4.2 against Ring Sizer's 3.7. AR Ruler Measuring Tape:Metrix also leads on ratings volume (1.2K vs 3) and update cadence (weekly vs every 3 weeks). On price, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. AR Ruler Measuring Tape:Metrix sells 9 in-app purchases, starting at $6.99 per 7 days and Ring Sizer sells 4 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

AR Ruler Measuring Tape:Metrix holds the better App Store score, 4.2 against 3.7. That said, the two scores are not equally well evidenced: AR Ruler Measuring Tape:Metrix has 1.2K ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

AR Ruler Measuring Tape:Metrix ships an update weekly, Ring Sizer every 3 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 7 level
AR Ruler Measuring Tape:Metrix versus Ring Sizer: the parameters behind the verdict, then further details
ParameterAR Ruler Measuring Tape:MetrixRing Sizer
PriceFreeFree
Rating4.2 (1.2K ratings) — better3.7 (3 ratings)
Positive reviews20.6% of reviews—
Number of ratings1.2K — better3
Update frequencyWeekly — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#119 — better—
DevicesiPhoneiPhone
Requires iOS18.018.0
Further details — not scored
Size410 MB52 MB
Age rating4+4+
DeveloperMobileTech OUDesidari Holding Ltd.

Customer experience

AR Ruler Measuring Tape:Metrix

All ratings1,185 ratings
Positive80.8%
Neutral2.1%
Negative17.1%
Written reviews136 reviews
Positive20.6%
Neutral0.7%
Negative78.7%

Ring Sizer

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%

Bugs and requests

AR Ruler Measuring Tape:Metrix

Reported bugs

11 issues
  • Contact button does not work
  • App continues to freeze
  • Buttons not clickable
  • App didn't work for one day
  • App won't load
Show 6 more
  • API ERROR
  • Kept saying 'error' when uploading photos
  • Settings options do not open
  • App goes dark and doesn't measure
  • Free test is a ripoff
  • Functionality not showing up as advertised

Requested features

6 requests
  • Provide clear instructions/directions
  • Make cancellation process straightforward
  • Ensure contact methods are functional
  • Allow account deletion
  • Fix app freezing/loading issues
Show 1 more
  • Improve accuracy in poor lighting

Ring Sizer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

9 purchases

AR Ruler Measuring Tape:Metrix

Subscriptions7
  • Weekly Premium3 Days trial$6.997 Days
  • Weekly Access3 Days trial$9.997 Days
  • Weekly Family Premium3 Days trial$9.997 Days
Show 4 more
  • Annual Family Premium$39.991 Year
  • Annual Premium$49.991 Year
  • Annual Family Premium$59.991 Year
  • Annual Access$64.991 Year
One-time2
  • Lifetime Premium$59.99
  • Lifetime Access$69.99
4 purchases

Ring Sizer

Subscriptions4
  • Ring Sizer Weekly3 Days trial$7.997 Days
  • Ring Sizer Monthly$19.991 Month
  • Ring Sizer Annual$24.991 Year
Show 1 more
  • Ring Sizer Yearly$49.991 Year

Questions

Is AR Ruler Measuring Tape:Metrix free?
AR Ruler Measuring Tape:Metrix is free to download, with in-app purchases available.
Is Ring Sizer free?
Ring Sizer is free to download, with in-app purchases available.
Which has better reviews, AR Ruler Measuring Tape:Metrix or Ring Sizer?
AR Ruler Measuring Tape:Metrix is rated higher. AR Ruler Measuring Tape:Metrix averages 4.2 out of 5 from 1.2K ratings, while Ring Sizer averages 3.7 from 3 ratings.
Do AR Ruler Measuring Tape:Metrix or Ring Sizer have ads?
Neither AR Ruler Measuring Tape:Metrix nor Ring Sizer shows ads.
Which is updated more often, AR Ruler Measuring Tape:Metrix or Ring Sizer?
AR Ruler Measuring Tape:Metrix ships an update weekly, and Ring Sizer every 3 weeks. Most recently, AR Ruler Measuring Tape:Metrix was updated on November 5, 2026 and Ring Sizer on October 31, 2026.

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