Ruler® vs Ruler
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ruler®
This app provides a versatile toolkit for all your measurement needs. It includes a classic ruler, a tape measure, and a camera ruler for precise measurements. Easily switch between units and document your findings by adding measurements directly to photos.
- Classic ruler and tape measure
- Camera ruler mode
- Photo measures mode
- Dual unit support (inches/cm)
- Precision sliders for small objects
- Elegant and user-friendly interface
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Your Comprehensive Ruler Solution for Your Phone! Experience the ultimate ruler toolkit on your phone, featuring a classic ruler, a tape measure, and a camera ruler. Key Features: - Elegant Design: Enjoy a stylish and user-friendly interface for all your measurement needs. - Dual Units: Easily switch between inches and centimeters for versatile measuring. - Precision Sliders: Accurately measure small objects with intuitive sliders. - Camera Ruler Mode: Utilize your phone's camera to measure objects seamlessly. - Photo Measures Mode: Add measurement data directly to your photos for organized documentation. Make every measurement a breeze with our complete ruler solution! Download now for a sleek and efficient measuring experience. Terms Of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ruler
Measure objects and distances with an on-screen ruler and augmented reality. Supports inches and centimeters, with features for linear sizes, angles, area, volume, and more. Save your measurements for later use.
- On-screen ruler for small objects
- Augmented Reality (AR) measuring
- Measure linear sizes in cm/inches
- Calculate angles, area, and volume
- Save measurements
- Generate plan projections
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Measure everything with a beautiful on-screen ruler. Choose between inches and centimeters. Tap the screen to start using the best multi-touch measuring system and find the size of all curious objects around you. Also with your camera measure everything accurate by using Augmented Reality (AR) feature. 1) Allows to tape measure linear sizes in cm, inches 2) With Bubble meter allows you to level objects horizontal 3) Save measurments 4) Allows to tape measure distance from device camera to a fixed point on the detected 3D plane. 5) Angle – allows to tape measure corners on 3D planes. 6) Area and Perimeter – allows to tape measure perimeter and area of the room. 7) Volume – allows to tape measure size of 3D objects. 8) Path – allows to calculate the length and area of the path. 9) Height – allows to tape measure height relative to the recognized surface. 10) Plan – generates plan projection for drawn objects and exports it . 11) On-screen Ruler app – measure small objects directly on the smartphone’s screen.
Screenshots
Verdict
The clearest difference is in-app purchases: Ruler at none against Ruler®'s 2. Ruler also leads on iOS requirement (13.0 vs 15.0). Ruler®'s advantage is ads (none vs shown) and update cadence (every 2 months vs every 14 months). On price, rating, review sentiment and device support 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
Both are free to download. Ruler® sells 2 in-app purchases, starting at $1.99 per 7 days. Ruler asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.3 for Ruler® against 4.2 for Ruler. That said, the two scores are not equally well evidenced: Ruler® has 35K ratings behind it against 413, so its average is the more settled of the two. Written reviews are what separate them: 22% of Ruler®'s written reviews are positive against 17% of Ruler's.
Ruler® ships an update every 2 months, Ruler every 14 months. The most recent releases landed on October 12, 2026 and October 10, 2026 respectively.
| Parameter | Ruler® | Ruler |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (35K ratings) — better | 4.2 (413 ratings) |
| Positive reviews | 21.9% of reviews — better | 16.7% of reviews |
| Number of ratings | 35K — better | 413 |
| Update frequency | Every 2 months — better | Every 14 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 22 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Tue Nguyen Minh | Matrix Software Co. |
Customer experience
Ruler®
Ruler
User reviews
Ruler®
From 35K App Store ratingsWhat we love
- 🚀 Accurate measurements
- 👍 Easy to use
- 🔍 Convenient for small items
- 📏 Useful ruler tool
Room to improve
- 💰 Paywall for basic features
- ⏱️ Limited free usage time
- 🔍 Inaccurate for larger objects
- 🙅♀️ Aggressive monetization tactics
Ruler
From 413 App Store ratingsWhat we love
- 👍 Basic caliper and spirit level included
- ✅ Option to opt-out of data selling/sharing
- 👌 Accurate measurements (Arabic review)
Room to improve
- 📏 Inaccurate measurements
- 💥 Frequent app crashes
- 💸 Limited free functionality (5" limit)
- 🚫 Cannot switch to metric (cm)
- 🤷 Unclear AR mode usage
Bugs and requests
Ruler®
Reported bugs
2 issues- Inconsistent measurements
- Compatibility issues with newer devices
Requested features
3 requests- Ability to switch between metric and imperial units without paying
- Improved accuracy for larger measurements
- Removal of time limits on free usage
Ruler
Reported bugs
8 issues- App crashes on iPhone 17 and iPad
- App crashes within 1 minute
- AR mode not functional
- Cannot switch to cm
- Measurements are out of scale
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- Centimeter measurement is wrong
- Ruler markings are wrong (10ths instead of 16ths)
- iPhone 14 Pro Max measured as over 9 inches
Requested features
7 requests- Fix crashing issues
- Enable switching to metric (cm)
- Improve AR mode usability
- Add save and print functionality
- Provide usage instructions
Show 2 moreShow fewer
- Ensure accurate scaling for all devices
- Fix ruler marking divisions
In-app purchases
Ruler®
- Ruler Pro (Weekly)3 Days trial$1.997 Days
- Pro Features$1.99
Ruler
No in-app purchases
