# Mechanical Engineering Toolkit vs Tap Tip Calculator

The clearest difference is price: Mechanical Engineering Toolkit at Free against Tap Tip Calculator's $1.99. Mechanical Engineering Toolkit also leads on device support (4 vs 2). Tap Tip Calculator's advantage is in-app purchases (none vs 1) and ads (none vs shown). On iOS requirement there is nothing between them.

Mechanical Engineering Toolkit is free to download; Tap Tip Calculator costs $1.99 up front. Mechanical Engineering Toolkit sells 1 one-off in-app purchase. Tap Tip Calculator asks for nothing beyond the download.

Mechanical Engineering Toolkit ships an update every 5 days, Tap Tip Calculator daily. The most recent releases landed on October 25, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Mechanical Engineering Toolkit | Tap Tip Calculator |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.8 (64 ratings)](https://appshunter.io/ios/app/mechanical-engineering-toolkit/id1601099443/reviews)** | — |
| Number of ratings | **64** | — |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 days | **Daily** |
| Monetization | Ad-supported | — |
| Size | 47 MB | 1 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | +4 |
| Developer | [APPS BAY LIMITED](https://appshunter.io/developer/1599035519) | [永文 胡](https://appshunter.io/developer/804677583) |

## What reviewers say

### 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 |


### Tap Tip Calculator

[App page](https://appshunter.io/ios/app/tap-tip-calculator-bill-points/id6748957644)

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

**In-app purchases:** none


## Frequently asked questions

### Is Mechanical Engineering Toolkit free?

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

### Is Tap Tip Calculator free?

Tap Tip Calculator costs $1.99, with no in-app purchases.

### Do Mechanical Engineering Toolkit or Tap Tip Calculator have ads?

Mechanical Engineering Toolkit shows ads; Tap Tip Calculator does not.

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

Mechanical Engineering Toolkit ships an update every 5 days, and Tap Tip Calculator daily. Most recently, Mechanical Engineering Toolkit was updated on October 25, 2026 and Tap Tip Calculator on October 15, 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.*