# Walter Machining Calculator vs EF Calculator

The clearest difference is update cadence: EF Calculator at every 8 months against Walter Machining Calculator's every 19 months. EF Calculator also leads on iOS requirement (11.0 vs 18.0). On price, ads, in-app purchases and device support 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, EF Calculator every 8 months. The most recent releases landed on November 1, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | Walter Machining Calculator | EF Calculator |
| --- | --- | --- |
| 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 8 months** |
| Monetization | Free | — |
| Size | 95 MB | 10 MB |
| Requires iOS | 18.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Walter-AG](https://appshunter.io/developer/423564215) | [EMUGE-Werk Richard Glimpel GmbH & Co. KG Fabrik fuer Praezisionswerkzeuge](https://appshunter.io/developer/1152974581) |

## 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


### EF Calculator

[App page](https://appshunter.io/ios/app/ef-calculator/id1164942213)

**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 EF Calculator free?

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

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

Neither Walter Machining Calculator nor EF Calculator shows ads.

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

Walter Machining Calculator ships an update every 19 months, and EF Calculator every 8 months. Most recently, Walter Machining Calculator was updated on November 1, 2026 and EF Calculator on November 11, 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.*