# Scientific Calculator++ vs Protractor (Angle measurement)

The clearest difference is price: Protractor (Angle measurement) at Free against Scientific Calculator++'s $2.99. Protractor (Angle measurement) also leads on in-app purchases (none vs 2) and update cadence (every 5 weeks vs every 38 months). Scientific Calculator++'s advantage is rating (5.0 vs 3.6) and ads (none vs shown). On review sentiment, ratings volume and iOS requirement there is nothing between them.

Protractor (Angle measurement) is free to download; Scientific Calculator++ costs $2.99 up front. Scientific Calculator++ sells 2 one-off in-app purchases. Protractor (Angle measurement) asks for nothing beyond the download.

Scientific Calculator++ holds the better App Store score, 5.0 against 3.6. Both are backed by a comparable volume of ratings — 21 and 10 respectively. Written reviews complicate that: 67% of Scientific Calculator++'s written reviews are positive against 68% of Protractor (Angle measurement)'s, so the app with the better star average is not the one people write more warmly about.

Scientific Calculator++ ships an update every 38 months, Protractor (Angle measurement) every 5 weeks. The most recent releases landed on October 15, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Scientific Calculator++ | Protractor (Angle measurement) |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (21 ratings)](https://appshunter.io/ios/app/scientific-calculator-plus-plus/id581543619/reviews)** | [3.6 (10 ratings)](https://appshunter.io/ios/app/protractor-angle-measurement/id926663865/reviews) |
| Number of ratings | **21** | 10 |
| Positive reviews | 66.7% of reviews | **68.1% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 38 months | **Every 5 weeks** |
| Monetization | Paid | **Ad-supported** |
| Size | 3 MB | 7 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Dogahe](https://appshunter.io/developer/468657946) | [EONSOFT](https://appshunter.io/developer/899851112) |

## What reviewers say

### Scientific Calculator++

[App page](https://appshunter.io/ios/app/scientific-calculator-plus-plus/id581543619)

This powerful calculator app offers advanced functions for complex calculations, including fraction manipulation, angle conversions, and equation solving. It features a history of your calculations and a user-friendly interface designed for iPad.

**Highlights:** Calculation history, Fraction manipulation, Angle conversion (degrees, minutes, seconds), Permutation and combination calculations, LCM and GCD, Equation solver, Coordinate conversion

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| List Size Plus | $0.99 | one-time |
| Quadratic Plus | $0.99 | one-time |


### Protractor (Angle measurement)

[App page](https://appshunter.io/ios/app/protractor-angle-measurement/id926663865)

Measure angles of objects using your device's camera. This utility app acts as a digital protractor, allowing you to accurately determine angles in real-world scenarios. Perfect for when a physical protractor is unavailable.

**Highlights:** Camera-based angle measurement, Digital protractor functionality, Measure angles of objects, Real-world angle determination

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Free and functional
- 👍 Accurate measurements
- 👍 Useful for homework
- 👍 Handy when needed
- 👍 Better than others

**What reviewers complain about**

- 👎 Hard to hold steady
- 👎 Camera is blurry
- 👎 Ads can be intrusive
- 👎 Difficult to use on paper
- 👎 Time limit on free version

**Reported bugs**

- Camera is always blurry
- Ads cover buttons
- App is a ghost app, cannot open
- Time limit makes it unusable
- Measures only in radians (free)

**Requested features**

- Ability to freeze image
- Ability to use photos for measurement
- Upload a still image and overlay protractor
- Improve accuracy with shaky hands
- Add option to take a picture and measure


## Frequently asked questions

### Is Scientific Calculator++ free?

Scientific Calculator++ costs $2.99, and also offers in-app purchases.

### Is Protractor (Angle measurement) free?

Protractor (Angle measurement) is free to download, with no in-app purchases.

### Which has better reviews, Scientific Calculator++ or Protractor (Angle measurement)?

Scientific Calculator++ is rated higher. Scientific Calculator++ averages 5.0 out of 5 from 21 ratings, while Protractor (Angle measurement) averages 3.6 from 10 ratings.

### Do Scientific Calculator++ or Protractor (Angle measurement) have ads?

Protractor (Angle measurement) shows ads; Scientific Calculator++ does not.

### Which is updated more often, Scientific Calculator++ or Protractor (Angle measurement)?

Scientific Calculator++ ships an update every 38 months, and Protractor (Angle measurement) every 5 weeks. Most recently, Scientific Calculator++ was updated on October 15, 2026 and Protractor (Angle measurement) on October 22, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*