# Triangle Calc A vs IsoTool

The clearest difference is price: IsoTool at Free against Triangle Calc A's $0.99. Triangle Calc A's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

IsoTool is free to download; Triangle Calc A costs $0.99 up front. IsoTool sells 1 in-app purchase, starting at $4.99 per month. Triangle Calc A asks for nothing beyond the download.

## The numbers

| Metric | Triangle Calc A | IsoTool |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 56 months | — |
| Size | 0 MB | 4 MB |
| Requires iOS | 26.0 | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [kohei yamane](https://appshunter.io/developer/1239055575) | [Kim Mathiesen](https://appshunter.io/developer/1747184979) |

## What reviewers say

### Triangle Calc A

[App page](https://appshunter.io/ios/app/triangle-calc-a/id1582200016)

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

**In-app purchases:** none


### IsoTool

[App page](https://appshunter.io/ios/app/isotool/id6754553989)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $4.99 | per month |


## Frequently asked questions

### Is Triangle Calc A free?

Triangle Calc A costs $0.99, with no in-app purchases.

### Is IsoTool free?

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

### Do Triangle Calc A or IsoTool have ads?

Neither Triangle Calc A nor IsoTool shows ads.

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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.*