# Triangle Simulator vs Triangle3

The clearest difference is review sentiment: Triangle Simulator at 100% against Triangle3's 40%. Triangle Simulator also leads on price (Free vs $3.99). Triangle3's advantage is in-app purchases (none vs 1) and ads (none vs shown). On update cadence, device support and iOS requirement there is nothing between them.

Triangle Simulator is free to download; Triangle3 costs $3.99 up front. Triangle Simulator sells 1 in-app purchase, starting at $1.99 per month. Triangle3 asks for nothing beyond the download.

Triangle Simulator ships an update every 2 months, Triangle3 every 5 weeks. The most recent releases landed on September 9, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Triangle Simulator | Triangle3 |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Positive reviews | **100.0% of reviews** | 40.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 58 MB | 7 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Toshiya Hondo](https://appshunter.io/developer/1571875732) | [ryo sasaki](https://appshunter.io/developer/318552526) |

## 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 |


### Triangle3

[App page](https://appshunter.io/ios/app/triangle3/id1643788233)

This app provides advanced calculation tools for field work, specializing in right and unequal triangles. It supports complex shapes like cones, pipes, and screw wings, with AR visualization for floor plans. It also includes standard calculator functions and memory features.

**Highlights:** Right and unequal triangle calculations, Complex shape development (cones, pipes, etc.), Augmented Reality (AR) floor plan visualization, Standard calculator functions with memory, Trigonometric and cosine theorem calculations, PCD and screw wing calculations

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Triangle Simulator free?

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

### Is Triangle3 free?

Triangle3 costs $3.99, with no in-app purchases.

### Do Triangle Simulator or Triangle3 have ads?

Triangle Simulator shows ads; Triangle3 does not.

### Which is updated more often, Triangle Simulator or Triangle3?

Triangle Simulator ships an update every 2 months, and Triangle3 every 5 weeks. Most recently, Triangle Simulator was updated on September 9, 2026 and Triangle3 on September 13, 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.*