# Scientific++ vs Machinist Calc Pro

The clearest difference is price: Scientific++ at $0.99 against Machinist Calc Pro's $24.99. Scientific++ also leads on review sentiment (89% vs 56%). Machinist Calc Pro's advantage is rating (4.8 vs 4.5). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

Scientific++ costs $0.99 and Machinist Calc Pro $24.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Machinist Calc Pro holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 61 and 31 respectively. Written reviews complicate that: 89% of Scientific++'s written reviews are positive against 56% of Machinist Calc Pro's, so the app with the better star average is not the one people write more warmly about.

Scientific++ ships an update every 6 months, Machinist Calc Pro every 5 months. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Scientific++ | Machinist Calc Pro |
| --- | --- | --- |
| Price | **$0.99** | $24.99 |
| Rating | [4.5 (61 ratings)](https://appshunter.io/ios/app/scientific-plus-plus/id468657943/reviews) | **[4.8 (31 ratings)](https://appshunter.io/ios/app/machinist-calc-pro/id596584456/reviews)** |
| Number of ratings | **61** | 31 |
| Positive reviews | **89.5% of reviews** | 55.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 months** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 3 MB | 14 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Dogahe](https://appshunter.io/developer/468657946) | [Calculated Industries](https://appshunter.io/developer/370406449) |

## What reviewers say

### Scientific++

[App page](https://appshunter.io/ios/app/scientific-plus-plus/id468657943)

This app is a powerful scientific calculator with advanced features like fraction manipulation, angle conversions, and equation solvers. It also includes a dice roller and a handy backspace function for easy editing. Additional geometry calculators are available via in-app purchase.

**Highlights:** Expression history and input display, Fraction manipulation and conversion, Degrees, minutes, seconds angle conversion, Permutation, combination, LCM, GCD, prime factorization, Quadratic and linear equation solver, Coordinate conversion (rectangular/polar), Physical constants list, Dice roller

**Features:** Vision Pro support

**In-app purchases:** none


### Machinist Calc Pro

[App page](https://appshunter.io/ios/app/machinist-calc-pro/id596584456)

This app provides machining professionals with a comprehensive set of tools for calculations related to speeds, feeds, threads, and trigonometry. It aims to increase productivity and reduce tool wear by offering quick access to essential data, replacing the need for physical charts and books.

**Highlights:** Speeds and Feeds calculations, Thread size and drill size look-ups, Trigonometric functions, Right triangle math, US and Metric unit conversions, Built-in help

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Scientific++ free?

Scientific++ costs $0.99, with no in-app purchases.

### Is Machinist Calc Pro free?

Machinist Calc Pro costs $24.99, with no in-app purchases.

### Which has better reviews, Scientific++ or Machinist Calc Pro?

Machinist Calc Pro is rated higher. Scientific++ averages 4.5 out of 5 from 61 ratings, while Machinist Calc Pro averages 4.8 from 31 ratings.

### Do Scientific++ or Machinist Calc Pro have ads?

Neither Scientific++ nor Machinist Calc Pro shows ads.

### Which is updated more often, Scientific++ or Machinist Calc Pro?

Scientific++ ships an update every 6 months, and Machinist Calc Pro every 5 months. Most recently, Scientific++ was updated on November 1, 2026 and Machinist Calc Pro on November 4, 2026.

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