# Triangle Simulator vs WTO Scanner

The clearest difference is in-app purchases: WTO Scanner at none against Triangle Simulator's 1. WTO Scanner also leads on ads (none vs shown). Triangle Simulator's advantage is iOS requirement (15.0 vs 18.0). On price, update cadence 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. WTO Scanner asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 11, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Triangle Simulator | WTO Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 65 MB | 148 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Toshiya Hondo](https://appshunter.io/developer/1571875732) | [WTO Werkzeug-Einrichtungen GmbH](https://appshunter.io/developer/1533221720) |

## What reviewers say

### 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 |


### WTO Scanner

[App page](https://appshunter.io/ios/app/wto-scanner/id1628784515)

**In-app purchases:** none


## Frequently asked questions

### Is Triangle Simulator free?

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

### Is WTO Scanner free?

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

### Do Triangle Simulator or WTO Scanner have ads?

Triangle Simulator shows ads; WTO Scanner does not.

### Which is updated more often, Triangle Simulator or WTO Scanner?

Triangle Simulator ships an update every 2 months, and WTO Scanner every 2 months. Most recently, Triangle Simulator was updated on October 11, 2026 and WTO Scanner on October 8, 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.*