# Engineering Calculator vs Cuspart

The clearest difference is rating: Cuspart at 5.0 against Engineering Calculator's 4.5. Engineering Calculator's advantage is in-app purchases (none vs 4) and update cadence (monthly vs every 4 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Cuspart sells 4 in-app purchases, starting at $0.99 per month. Engineering Calculator asks for nothing beyond the download.

Cuspart holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Engineering Calculator ships an update monthly, Cuspart every 4 months. The most recent releases landed on September 23, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Engineering Calculator | Cuspart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/engineering-calculator/id1395510375/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cuspart-mycal/id1546543143/reviews)** |
| Number of ratings | **2** | 1 |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 1 MB | 13 MB |
| Requires iOS | **12.2** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Masato Kanazawa](https://appshunter.io/developer/1110570349) | [Mustafa Tolga DALBUDAK](https://appshunter.io/developer/1479052908) |

## What reviewers say

### Engineering Calculator

[App page](https://appshunter.io/ios/app/engineering-calculator/id1395510375)

This utility app helps users convert units and calculate tips, primarily for those in the US. It operates offline and aims for minimal user interaction to provide quick results. Useful for avoiding misunderstandings in business dealings due to unit differences.

**Highlights:** Unit conversion, Tip calculation, Offline functionality, Minimalist interface, Business negotiation aid

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

**In-app purchases:** none


### Cuspart

[App page](https://appshunter.io/ios/app/cuspart-mycal/id1546543143)

This app offers a professional-grade calculator with advanced math functions, a constants library, and intuitive history tracking. Customize your experience with various color themes and an accessible interface designed for ease of use.

**Highlights:** Basic and advanced arithmetic, Roots, powers, and logarithms, Constants library (π, e), Operation history, Customizable color themes, Accessible UI design

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Subscription | $0.99 | per month |
| 3 Month Subscription | $2.99 | per 3 months |
| 12 Month Subscription | $9.99 | per year |
| Remove Ads | $2.49 | one-time |


## Frequently asked questions

### Is Engineering Calculator free?

Engineering Calculator is free to download, with no in-app purchases.

### Is Cuspart free?

Cuspart is free to download, with in-app purchases available.

### Which has better reviews, Engineering Calculator or Cuspart?

Cuspart is rated higher. Engineering Calculator averages 4.5 out of 5 from 2 ratings, while Cuspart averages 5.0 from 1 ratings.

### Do Engineering Calculator or Cuspart have ads?

Both Engineering Calculator and Cuspart show ads.

### Which is updated more often, Engineering Calculator or Cuspart?

Engineering Calculator ships an update monthly, and Cuspart every 4 months. Most recently, Engineering Calculator was updated on September 23, 2026 and Cuspart on October 1, 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.*