# Mechanical Engineer vs racmax

The clearest difference is in-app purchases: racmax at none against Mechanical Engineer's 3. racmax also leads on iOS requirement (13.0 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Mechanical Engineer sells 3 in-app purchases, starting at $0.99 per month. racmax asks for nothing beyond the download.

Mechanical Engineer ships an update every 2 months, racmax every 4 months. The most recent releases landed on August 13, 2026 and February 23, 2026 respectively.

## The numbers

| Metric | Mechanical Engineer | racmax |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (8 ratings)](https://appshunter.io/ios/app/mechanical-engineer/id327055140/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 30.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 5 MB | 52 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Historycentral.com](https://appshunter.io/developer/1744330560) | [Relenfeize inc](https://appshunter.io/developer/987482551) |

## What reviewers say

### Mechanical Engineer

[App page](https://appshunter.io/ios/app/mechanical-engineer/id327055140)

This app provides over 300 essential mechanical engineering formulas across various domains. It allows users to calculate, save, compare, and share results, aiding in project optimization and decision-making. Users can access a limited number of calculations for free, with a subscription unlocking full functionality.

**Highlights:** Over 300 mechanical engineering formulas, Covers diverse engineering domains, Save and compare formula results, Share calculation outcomes, Intuitive and practical interface, Regular updates based on user input

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Pro Quarterly | $0.99 | per 3 months |
| Pro Yearly | $2.99 | per year |


### racmax

[App page](https://appshunter.io/ios/app/racmax/id6460935491)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mechanical Engineer free?

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

### Is racmax free?

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

### Do Mechanical Engineer or racmax have ads?

Neither Mechanical Engineer nor racmax shows ads.

### Which is updated more often, Mechanical Engineer or racmax?

Mechanical Engineer ships an update every 2 months, and racmax every 4 months. Most recently, Mechanical Engineer was updated on August 13, 2026 and racmax on February 23, 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.*