# Automobile Engineering Book vs SkillTimer

The clearest difference is iOS requirement: Automobile Engineering Book at 14.0 against SkillTimer's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Automobile Engineering Book sells 4 in-app purchases, starting at $2.99 per 3 months and SkillTimer sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Automobile Engineering Book | SkillTimer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (9 ratings)](https://appshunter.io/ios/app/automobile-engineering-book/id1583758958/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 136 MB | 2 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Oleksandr Pereshein](https://appshunter.io/developer/1041461209) | [SUN TEAME PTE. LTD.](https://appshunter.io/developer/941073095) |

## What reviewers say

### Automobile Engineering Book

[App page](https://appshunter.io/ios/app/automobile-engineering-book/id1583758958)

This app provides a comprehensive yet accessible guide to automobile engineering. It covers basic vehicle structure, common malfunctions, and maintenance rules in a clear, engaging format with ample illustrations. Ideal for novice drivers and anyone seeking to understand their car better.

**Highlights:** Basic vehicle structure information, Common malfunctions and solutions, Operation and maintenance rules, Simple language explanations of car systems, Extensive illustrative material

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version | $2.99 | per 3 months |
| Full version for three months | $2.99 | one-time |
| Full version for one year | $4.99 | one-time |
| Full version forever | $6.99 | one-time |


### SkillTimer

[App page](https://appshunter.io/ios/app/skilltimer/id6790099811)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SkillTimer Premium Weekly | $3.99 | per 7 days |
| SkillTimer Premium Monthly | $8.99 | per month |
| SkillTimer Premium Yearly | $39.99 | per year |


## Frequently asked questions

### Is Automobile Engineering Book free?

Automobile Engineering Book is free to download, with in-app purchases available.

### Is SkillTimer free?

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

### Do Automobile Engineering Book or SkillTimer have ads?

Neither Automobile Engineering Book nor SkillTimer shows ads.

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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.*