Comparison

Ring Sizer & Measure vs Ruler Studio

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

Head to head
About

Ring Sizer & Measure

Accurately measure your ring size using your iPhone. This tool provides precise diameter and size measurements, supports multiple international sizing systems, and allows you to save your measurements.

Highlights
  • Measure ring size with precision
  • Switch between inches and millimeters
  • Utilize visual sizing guides
  • Support for multiple international sizing systems
  • Save ring and finger size measurements
  • Capture finger width with slider controls
Read full description

Measure your ring size with precision using the most easy-to-use ring sizer app β€” get accurate measurements every time! Turn your iPhone into a professional ring sizer and finger sizer: β€’ Measure Ring Size With Precision – adjust the virtual ring until it fits, then fine-tune to get the exact diameter and size. β€’ Measurement In Inches Or Millimeters – switch effortlessly between Metric (mm) and Imperial (in) for whatever works best for you. β€’ Precise Measuring With Sizing Guides – follow visual guides to align your finger or ring perfectly, ensuring arrows are fully visible and no blue lines peek through. β€’ All Sizing Systems: USA, UK, EU & More – choose your preferred ring sizing system (USA/Canada, UK/Australia, European Union, Japan, Switzerland, and beyond). β€’ Save Sizes For Rings & Fingers – store measurements so you never lose track of your ring or finger sizes. β€’ Get Finger Size Measurements – easily capture finger width with intuitive slider controls and on-screen positioning arrows. β€’ #1 Ring Sizer For Accuracy – see diameter, circumference, exact size, nearest quarter, and half sizes at a glance. Whether you’re shopping online, ordering custom jewelry, or just curious about your exact fit, our Ring Sizer brings professional accuracy to your pocket.Β  Download now and never guess your ring size again! Terms of Service: https://sites.google.com/shipyardstudios.io/ring-sizer-terms-of-service Privacy Policy: https://sites.google.com/shipyardstudios.io/ringsizerprivacypolicy License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Ruler Studio

Features
Read full description

Precise measuring tools Ruler, grid, calibration, and ring sizing in one clean workspace. Ruler & Grid Studio High-precision multi-unit rulers with a built-in grid for everyday measurements. Smart Ring Sizer Align a real ring with the guide to estimate diameter, circumference, and size. Card Calibration Use a standard card edge to improve real-world measurement accuracy. Free Measuring Toolkit Full-screen grids, scale presets, and measurement overlays are included for everyone. Precise ruler, grid, calibration, and ring sizing tools.

Screenshots

Ring Sizer & Measure4 screens
Ruler Studio4 screens

Verdict

The call

The clearest difference is update cadence: Ring Sizer & Measure at every 4 days against Ruler Studio's every 6 weeks. Ruler Studio's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 18.5). On price, ads and in-app purchases 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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Ring Sizer & Measure sells 6 in-app purchases, starting at $1.99 per 7 days and Ruler Studio sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Ring Sizer & Measure ships an update every 4 days, Ruler Studio every 6 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard3 real differences Β· 5 level
Ring Sizer & Measure versus Ruler Studio: the parameters behind the verdict, then further details
ParameterRing Sizer & MeasureRuler Studio
PriceFreeFree
Positive reviews100.0% of reviewsβ€”
Update frequencyEvery 4 days β€” betterEvery 6 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesβ€”
DevicesiPhoneiPhone, iPad, iPod β€” better
Requires iOS18.513.0 β€” better
Further details β€” not scored
Size25 MB19 MB
Age rating4+4+
DeveloperMichael GilroySpyridon Bousios

In-app purchases

6 purchases

Ring Sizer & Measure

Subscriptions6
  • RingSizer Pro$1.997 Days
  • RingSizer Pro3 Days trial$2.997 Days
  • RingSizer Pro3 Days trial$4.997 Days
Show 3 more
  • RingSizer Pro$4.997 Days
  • RingSizer Pro3 Days trial$9.991 Year
  • RingSizer Pro$19.991 Year
1 purchases

Ruler Studio

One-time1
  • Ruler Pro Lifetime$2.99

Questions

Is Ring Sizer & Measure free?
Ring Sizer & Measure is free to download, with in-app purchases available.
Is Ruler Studio free?
Ruler Studio is free to download, with in-app purchases available.
Do Ring Sizer & Measure or Ruler Studio have ads?
Neither Ring Sizer & Measure nor Ruler Studio shows ads.
Which is updated more often, Ring Sizer & Measure or Ruler Studio?
Ring Sizer & Measure ships an update every 4 days, and Ruler Studio every 6 weeks. Most recently, Ring Sizer & Measure was updated on November 5, 2026 and Ruler Studio on October 31, 2026.

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