# Engineering Machine Calculator vs Tool Locker

The clearest difference is in-app purchases: Engineering Machine Calculator at none against Tool Locker's 1. Engineering Machine Calculator also leads on iOS requirement (14.0 vs 17.6). Tool Locker's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Tool Locker sells 1 in-app purchase, starting at $19.99 per year. Engineering Machine Calculator asks for nothing beyond the download.

## The numbers

| Metric | Engineering Machine Calculator | Tool Locker |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Monetization | Ad-supported | — |
| Size | 6 MB | 129 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mohammed Waqas Zaman](https://appshunter.io/developer/1640772229) | [Tool locker limited](https://appshunter.io/developer/1869613809) |

## What reviewers say

### Engineering Machine Calculator

[App page](https://appshunter.io/ios/app/engineering-machine-calculator/id1640772227)

This app provides offline calculations for milling and turning operations. It helps users determine parameters like cutting speed, spindle speed, and metal removal rate. All calculations are saved for easy access in the history tab.

**Highlights:** Offline milling and turning calculations, Cutting speed calculation, Spindle speed calculation, Metal removal rate calculation, Power requirement calculation, Saved calculation history

**Features:** macOS Compatibility

**In-app purchases:** none


### Tool Locker

[App page](https://appshunter.io/ios/app/tool-locker-inventory/id6757919752)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription | $19.99 | per year |


## Frequently asked questions

### Is Engineering Machine Calculator free?

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

### Is Tool Locker free?

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

### Do Engineering Machine Calculator or Tool Locker have ads?

Engineering Machine Calculator shows ads; Tool Locker does not.

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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.*