# Walter Machining Calculator vs FEATUREgrip

The clearest difference is iOS requirement: FEATUREgrip at 15.1 against Walter Machining Calculator's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Walter Machining Calculator ships an update every 19 months, FEATUREgrip every 23 months. The most recent releases landed on October 23, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Walter Machining Calculator | FEATUREgrip |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (5 ratings)](https://appshunter.io/ios/app/walter-machining-calculator/id423564212/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 62.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 19 months** | Every 23 months |
| Monetization | Free | — |
| Size | 95 MB | 22 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Walter-AG](https://appshunter.io/developer/423564215) | [Heinrich Kipp Werk KG](https://appshunter.io/developer/639520721) |

## What reviewers say

### Walter Machining Calculator

[App page](https://appshunter.io/ios/app/walter-machining-calculator/id423564212)

Calculate machining time, power, torque, and cutting force for various operations. Compare existing tools with new ones to project potential savings.

**Highlights:** Calculate machining time, power, and torque, Determine cutting force and metal removal rate, Support for milling, drilling, boring, turning, and grooving, Thread tapping, forming, and milling calculations, Material selection for calculations, Savings calculator for tool comparison

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

**In-app purchases:** none


### FEATUREgrip

[App page](https://appshunter.io/ios/app/featuregrip/id6477911999)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Walter Machining Calculator free?

Walter Machining Calculator is free to download, with no in-app purchases.

### Is FEATUREgrip free?

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

### Do Walter Machining Calculator or FEATUREgrip have ads?

Neither Walter Machining Calculator nor FEATUREgrip shows ads.

### Which is updated more often, Walter Machining Calculator or FEATUREgrip?

Walter Machining Calculator ships an update every 19 months, and FEATUREgrip every 23 months. Most recently, Walter Machining Calculator was updated on October 23, 2026 and FEATUREgrip on September 17, 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.*