# Walter Safety vs Triangle Simulator

The clearest difference is in-app purchases: Walter Safety at none against Triangle Simulator's 1. Walter Safety also leads on ads (none vs shown) and iOS requirement (7.0 vs 15.0). Triangle Simulator's advantage is review sentiment (100% vs 80%) and update cadence (every 2 months vs every 5 months). On price and device support there is nothing between them.

Both are free to download. Triangle Simulator sells 1 in-app purchase, starting at $1.99 per month. Walter Safety asks for nothing beyond the download.

Walter Safety ships an update every 5 months, Triangle Simulator every 2 months. The most recent releases landed on October 2, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Walter Safety | Triangle Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 80.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 46 MB | 65 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) | [Toshiya Hondo](https://appshunter.io/developer/1571875732) |

## 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


### Triangle Simulator

[App page](https://appshunter.io/ios/app/triangle-simulator/id1583116107)

Calculate triangle properties like sides, angles, and area instantly. Save and review past calculations with added memos. Supports various input formats and angle units for precise results.

**Highlights:** Calculate triangle sides, angles, and area, View triangle image, Save calculation history, Add memos to calculations, Input sides in square rooted values, Adjust result digit count, Choose angle units

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads (Monthly) | $1.99 | per month |


## Frequently asked questions

### Is Walter Safety free?

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

### Is Triangle Simulator free?

Triangle Simulator is free to download, with in-app purchases available.

### Do Walter Safety or Triangle Simulator have ads?

Triangle Simulator shows ads; Walter Safety does not.

### Which is updated more often, Walter Safety or Triangle Simulator?

Walter Safety ships an update every 5 months, and Triangle Simulator every 2 months. Most recently, Walter Safety was updated on October 2, 2026 and Triangle Simulator on October 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.*