Protractor vs Mentora
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Protractor
Measure angles precisely using your phone's screen or camera. This intuitive tool allows you to adjust measurement lines and instantly see the angular difference. Ideal for professionals and hobbyists needing quick, accurate angle calculations.
- Angle measurement with adjustable lines
- Camera integration for real-world measurements
- Freeze function for static measurements
- Clean and modern user interface
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Screen Protractor is the precise, easy-to-use angle measurement tool that turns your iPhone into a digital protractor. Move two measurement lines anywhere on screen and instantly read the exact angle between them — down to the degree. MEASURE ANGLES ON ANY SURFACE Enable the built-in camera to use your live feed as a background. Hold your phone up to any object, surface, or corner and measure angles in real time without printing anything out or carrying a physical protractor. FREEZE & MEASURE Pause the camera image with the freeze function and take your time getting a precise angle reading on a still frame — perfect for moving objects or awkward angles. KEY FEATURES • Precision angle measurement between two draggable lines • Live camera background for measuring real-world angles • Freeze frame for accurate measurements on still images • Pan and zoom the measurement scale for fine-tuned readings • Clean, distraction-free interface PERFECT FOR Carpenters, builders, engineers, architects, designers, students, and anyone who needs a quick angle, slope, or degree measurement on the go. No registration. No ads. Just a reliable digital protractor in your pocket.
Mentora
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Mentora merupakan aplikasi yang digunakan untuk pencatatan logbook, perwalian dan penilaian mahasiswa profesi kedokteran Unimus.
Screenshots
Verdict
The clearest difference is ads: Mentora at none against Protractor's shown. On price, update cadence, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Protractor ships an update every 9 days, Mentora every 2 weeks. The most recent releases landed on September 21, 2026 and September 27, 2026 respectively.
| Parameter | Protractor | Mentora |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (14 ratings) — better | — |
| Positive reviews | 60.0% of reviews | — |
| Number of ratings | 14 — better | — |
| Update frequency | Every 9 days — better | Every 2 weeks |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 33 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Jens Rieckhof | Adnan Tawaffani |
In-app purchases
Protractor
No in-app purchases
Mentora
No in-app purchases
Questions
Is Protractor free?
Is Mentora free?
Do Protractor or Mentora have ads?
Which is updated more often, Protractor or Mentora?
Other comparisons
