# Power Calculator vs Mechanical Engineering Toolkit

The clearest difference is in-app purchases: Power Calculator at none against Mechanical Engineering Toolkit's 1. Power Calculator also leads on ads (none vs shown) and review sentiment (84% vs 57%). Mechanical Engineering Toolkit's advantage is update cadence (every 8 days vs every 2 months) and rating (4.8 vs 4.5). On price and device support there is nothing between them.

Both are free to download. Mechanical Engineering Toolkit sells 1 one-off in-app purchase. Power Calculator asks for nothing beyond the download.

Mechanical Engineering Toolkit holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Mechanical Engineering Toolkit has 64 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 84% of Power Calculator's written reviews are positive against 57% of Mechanical Engineering Toolkit's, so the app with the better star average is not the one people write more warmly about.

Power Calculator ships an update every 2 months, Mechanical Engineering Toolkit every 8 days. The most recent releases landed on June 5, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Power Calculator | Mechanical Engineering Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/power-calculator/id454548791/reviews) | **[4.8 (64 ratings)](https://appshunter.io/ios/app/mechanical-engineering-toolkit/id1601099443/reviews)** |
| Number of ratings | 2 | **64** |
| Positive reviews | **84.2% of reviews** | 57.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 8 days** |
| Monetization | **Free** | Ad-supported |
| Size | 2 MB | 38 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Power Continuity Limited](https://appshunter.io/developer/454548794) | [APPS BAY LIMITED](https://appshunter.io/developer/1599035519) |

## What reviewers say

### Power Calculator

[App page](https://appshunter.io/ios/app/power-calculator/id454548791)

This app provides a straightforward calculator designed for the electrical industry, offering tools for power and lighting calculations. It helps users determine generator and UPS requirements, convert units, and calculate fuel consumption. Suitable for both professionals and casual users needing electrical calculations.

**Highlights:** KW, kVA, and Amps calculation, Generator requirements calculation (single/three phase), UPS requirements calculation (single/three phase), Lumens and Watts conversion, Generator fuel consumption calculation, Generator power calculation

**Features:** macOS Compatibility

**In-app purchases:** none


### Mechanical Engineering Toolkit

[App page](https://appshunter.io/ios/app/mechanical-engineering-toolkit/id1601099443)

This utility app provides a comprehensive collection of engineering equations and formulas for students and professionals. Easily perform calculations by selecting a formula and inputting variables, with detailed instructions and reference material included.

**Highlights:** Engineering equations and formulas, Mechanics of Material calculations, Theory of Elasticity formulas, Composite Material properties, Reference material, Variable input for calculations

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is Power Calculator free?

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

### Is Mechanical Engineering Toolkit free?

Mechanical Engineering Toolkit is free to download, with in-app purchases available.

### Which has better reviews, Power Calculator or Mechanical Engineering Toolkit?

Mechanical Engineering Toolkit is rated higher. Power Calculator averages 4.5 out of 5 from 2 ratings, while Mechanical Engineering Toolkit averages 4.8 from 64 ratings.

### Do Power Calculator or Mechanical Engineering Toolkit have ads?

Mechanical Engineering Toolkit shows ads; Power Calculator does not.

### Which is updated more often, Power Calculator or Mechanical Engineering Toolkit?

Power Calculator ships an update every 2 months, and Mechanical Engineering Toolkit every 8 days. Most recently, Power Calculator was updated on June 5, 2026 and Mechanical Engineering Toolkit on September 24, 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.*