RulePad vs Ring Sizer
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
RulePad
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RulePad is your all-in-one measurement toolkit. Screen rulers, AR measurement, protractor, and photo measurement ā everything you need in one app. RULER ⢠Multiple rulers on a free-form canvas ⢠L-ruler for measuring corners ⢠Metallic silver design with precise tick marks ⢠Full-screen ruler mode with edges on all four sides ⢠Pinch-to-resize protractor for angle measurement ⢠Custom calibration for any device AR MEASURE ⢠Tap to measure distances in the real world ⢠Flexible tape mode ā follow curves and edges ⢠Close loop for floor plans with area calculation ⢠Drag to adjust placed points ⢠Screenshot measurements with annotations ⢠Triangle and polygon angle display PHOTO MEASURE ⢠Measure objects in photos ⢠Calibrate with preset reference objects (coins, cards, paper) ⢠Pinch to zoom for precision placement ⢠Track sizes over time HISTORY ⢠All measurements saved automatically ⢠Export to 2D technical drawings Privacy Policy: https://quietbyte.io/privacy-rulepad.html
Ring Sizer
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Ring Sizer is a simple on-screen tool to find your ring size at home. Place a ring on the screen and resize the guide until it matches the inner edge, or measure your finger with the stencil and side slider. Ring Sizer also includes a real centimetre and inch ruler. Get clear US, UK, and EU sizes, save measurements on your device, and calibrate with a bank card for better accuracy. This app uses the standard Apple Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is iOS requirement: Ring Sizer at 15.1 against RulePad's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.
| Parameter | RulePad | Ring Sizer |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 15.1 ā better |
| Further details ā not scored | ||
| Size | 3 MB | 49 MB |
| Age rating | 4+ | 4+ |
| Developer | JUMING LAI | Yaroslav Trofimov |
In-app purchases
RulePad
No in-app purchases
Ring Sizer
No in-app purchases









