# Wait and Weight Simulator vs Mechanical Engineering Book

The clearest difference is price: Mechanical Engineering Book at $1.99 against Wait and Weight Simulator's $19.99. Mechanical Engineering Book also leads on iOS requirement (10.0 vs 12.0). Wait and Weight Simulator's advantage is update cadence (every 4 months vs every 11 months). On ads, in-app purchases and device support there is nothing between them.

Wait and Weight Simulator costs $19.99 and Mechanical Engineering Book $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Wait and Weight Simulator ships an update every 4 months, Mechanical Engineering Book every 11 months. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Wait and Weight Simulator | Mechanical Engineering Book |
| --- | --- | --- |
| Price | $19.99 | **$1.99** |
| Rating | — | **[4.7 (12 ratings)](https://appshunter.io/ios/app/mechanical-engineering-book/id6448752936/reviews)** |
| Number of ratings | — | **12** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 11 months |
| Monetization | — | Paid |
| Size | 19 MB | 38 MB |
| Requires iOS | 12.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Carlos Moura](https://appshunter.io/developer/407501202) | [Haroon Khalil](https://appshunter.io/developer/1685448939) |

## What reviewers say

### Wait and Weight Simulator

[App page](https://appshunter.io/ios/app/wait-and-weight-simulator/id1443043006)

**In-app purchases:** none


### Mechanical Engineering Book

[App page](https://appshunter.io/ios/app/mechanical-engineering-book/id6448752936)

This app provides a comprehensive guide to mechanical engineering, covering fundamental concepts, key terms, and essential formulas. It's designed for students and professionals to deepen their understanding of machine mechanisms and engineering principles.

**Highlights:** Learn mechanical engineering principles, Understand machine mechanisms, Access engineering formulas and equations, Explore engineering facts, Covers thermodynamics, materials science, and more, Designed for professionals and students

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

**In-app purchases:** none


## Frequently asked questions

### Is Wait and Weight Simulator free?

Wait and Weight Simulator costs $19.99, with no in-app purchases.

### Is Mechanical Engineering Book free?

Mechanical Engineering Book costs $1.99, with no in-app purchases.

### Do Wait and Weight Simulator or Mechanical Engineering Book have ads?

Neither Wait and Weight Simulator nor Mechanical Engineering Book shows ads.

### Which is updated more often, Wait and Weight Simulator or Mechanical Engineering Book?

Wait and Weight Simulator ships an update every 4 months, and Mechanical Engineering Book every 11 months. Most recently, Wait and Weight Simulator was updated on October 2, 2026 and Mechanical Engineering Book 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.*