# Walter Safety vs Machining Advisor Pro

The clearest difference is review sentiment: Walter Safety at 80% against Machining Advisor Pro's 17%. Walter Safety also leads on ads (none vs shown) and monetization model (free vs ad-supported). Machining Advisor Pro's advantage is update cadence (every 6 weeks vs every 5 months). On price, 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 Safety ships an update every 5 months, Machining Advisor Pro every 6 weeks. The most recent releases landed on October 18, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Walter Safety | Machining Advisor Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (163 ratings)](https://appshunter.io/ios/app/machining-advisor-pro/id1321154225/reviews)** |
| Number of ratings | — | **163** |
| Positive reviews | **80.0% of reviews** | 17.2% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 6 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 46 MB | 61 MB |
| Requires iOS | **7.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [J. Walter Compagnie Lt�](https://appshunter.io/developer/567652446) | [HARVEY TOOL COMPANY, LLC](https://appshunter.io/developer/1321041519) |

## What reviewers say

### Walter Safety

[App page](https://appshunter.io/ios/app/walter-safety/id567652443)

This app provides metal workers and welders with essential tools and information for their daily tasks. It offers charts for optimal settings on grinders, drill bits, and cutters, along with a grinding angle guide and a unit converter.

**Highlights:** Drill bit speed chart, Annular cutter chart, Abrasive speed chart, Grinding angle guide, Unit converter, Built-in level tool, Flashlight functionality

**Features:** macOS Compatibility

**In-app purchases:** none


### Machining Advisor Pro

[App page](https://appshunter.io/ios/app/machining-advisor-pro/id1321154225)

This app provides recommended running parameters for CNC machining, specifically for Helical Solutions and Harvey Tool products. It generates customized speeds and feeds based on your end mill, tool path, material, and machine setup, optimizing metal removal rates and shop productivity.

**Highlights:** CNC speeds and feeds calculator, Optimized for 30,000+ products, Supports 300+ material grades, Intuitive user interface, Customized setup options, Quick search functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Walter Safety free?

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

### Is Machining Advisor Pro free?

Machining Advisor Pro is free to download, with no in-app purchases.

### Do Walter Safety or Machining Advisor Pro have ads?

Machining Advisor Pro shows ads; Walter Safety does not.

### Which is updated more often, Walter Safety or Machining Advisor Pro?

Walter Safety ships an update every 5 months, and Machining Advisor Pro every 6 weeks. Most recently, Walter Safety was updated on October 18, 2026 and Machining Advisor Pro on October 23, 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.*