Ruler® vs Tutor Assistant
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
Read full descriptionHide full description
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/
Tutor Assistant
Read full descriptionHide full description
This app is designed for Cosmo's teachers, making the classroom more vivid and allowing them to use iPad as a tool to do handwriting. When having a class, teachers will be able to connect their iPads as an extended tool for annotation. This allows for easier handwriting and smoother teaching and learning experience.
Screenshots
Verdict
The clearest difference is in-app purchases: Tutor Assistant at none against Ruler®'s 2. Tutor Assistant also leads on update cadence (every 3 weeks vs every 2 months). Ruler®'s advantage is device support (3 vs 1). On price, ads and iOS requirement 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. Tutor Assistant asks for nothing beyond the download.
Ruler® ships an update every 2 months, Tutor Assistant every 3 weeks. The most recent releases landed on September 29, 2026 and September 17, 2026 respectively.
| Parameter | Ruler® | Tutor Assistant |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (35K ratings) — better | — |
| Positive reviews | 21.9% of reviews | — |
| Number of ratings | 35K — better | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 22 MB | 205 MB |
| Age rating | 4+ | 4+ |
| Developer | Tue Nguyen Minh | Algorithm of Learning Inc. |
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
Tutor Assistant
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Ruler®
- Ruler Pro (Weekly)3 Days trial$1.997 Days
- Pro Features$1.99
Tutor Assistant
No in-app purchases
