# Machining Calc vs DatumLab

The clearest difference is in-app purchases: DatumLab at none against Machining Calc's 3. Machining Calc's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 17.0). On price and ads there is nothing between them.

Both are free to download. Machining Calc sells 3 in-app purchases, starting at $2.99 per month. DatumLab asks for nothing beyond the download.

## The numbers

| Metric | Machining Calc | DatumLab |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 22 months | — |
| Size | 38 MB | 3 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ashvin Kevadiya](https://appshunter.io/developer/1756324971) | [建东 刘](https://appshunter.io/developer/1896489302) |

## What reviewers say

### Machining Calc

[App page](https://appshunter.io/ios/app/machining-calc-speeds-and-feeds/id6740812774)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $2.99 | per month |
| Yearly Premium | $5.99 | per year |
| Lifetime | $12.99 | one-time |


### DatumLab

[App page](https://appshunter.io/ios/app/datumlab/id6780406607)

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

**In-app purchases:** none


## Frequently asked questions

### Is Machining Calc free?

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

### Is DatumLab free?

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

### Do Machining Calc or DatumLab have ads?

Neither Machining Calc nor DatumLab 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.*