# Walter Machining Calculator vs Thread Calculator

The clearest difference is rating: Thread Calculator at 4.4 against Walter Machining Calculator's 3.0. Thread Calculator also leads on iOS requirement (15.0 vs 18.0). Walter Machining Calculator's advantage is ads (none vs shown) and review sentiment (63% vs 33%). On price, ratings volume, update cadence 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.

Thread Calculator holds the better App Store score, 4.4 against 3.0. Both are backed by a comparable volume of ratings — 5 and 14 respectively. Written reviews complicate that: 63% of Walter Machining Calculator's written reviews are positive against 33% of Thread Calculator's, so the app with the better star average is not the one people write more warmly about.

Walter Machining Calculator ships an update every 19 months, Thread Calculator every 18 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Walter Machining Calculator | Thread Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (5 ratings)](https://appshunter.io/ios/app/walter-machining-calculator/id423564212/reviews) | **[4.4 (14 ratings)](https://appshunter.io/ios/app/thread-calculator/id1559560290/reviews)** |
| Number of ratings | 5 | **14** |
| Positive reviews | **62.9% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 19 months | **Every 18 months** |
| Monetization | **Free** | Ad-supported |
| Size | 95 MB | 25 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Walter-AG](https://appshunter.io/developer/423564215) | [GSR Gustav Stursberg GmbH](https://appshunter.io/developer/1559560292) |

## 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


### Thread Calculator

[App page](https://appshunter.io/ios/app/thread-calculator/id1559560290)

This app provides a quick and easy way to calculate thread dimensions for various units, including tap hole sizes and bolt specifications. It helps metalworkers find precise measurements for internal and external threads without consulting tables.

**Highlights:** Thread cutting calculator for multiple units, Cold forming calculator, Thread repair calculator, Tap hole and bolt diameter calculation, Saves time compared to tables

**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 Thread Calculator free?

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

### Which has better reviews, Walter Machining Calculator or Thread Calculator?

Thread Calculator is rated higher. Walter Machining Calculator averages 3.0 out of 5 from 5 ratings, while Thread Calculator averages 4.4 from 14 ratings.

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

Thread Calculator shows ads; Walter Machining Calculator does not.

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

Walter Machining Calculator ships an update every 19 months, and Thread Calculator every 18 months. Most recently, Walter Machining Calculator was updated on October 23, 2026 and Thread Calculator on October 24, 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.*