# Generator Engine Manager vs R2 GearCalc

The clearest difference is in-app purchases: R2 GearCalc at none against Generator Engine Manager's 3. Generator Engine Manager's advantage is iOS requirement (14.0 vs 16.4). On price, ads and device support there is nothing between them.

Both are free to download. Generator Engine Manager sells 3 in-app purchases, starting at $3.99 per month. R2 GearCalc asks for nothing beyond the download.

## The numbers

| Metric | Generator Engine Manager | R2 GearCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | — |
| Size | 22 MB | 45 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Oleksandr Palamarchuk](https://appshunter.io/developer/1345928309) | [Yury Rak](https://appshunter.io/developer/6796796988) |

## What reviewers say

### Generator Engine Manager

[App page](https://appshunter.io/ios/app/generator-engine-manager/id6550922607)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Month | $3.99 | per month |
| One Year | $34.99 | per year |
| Forever | $99.99 | one-time |


### R2 GearCalc

[App page](https://appshunter.io/ios/app/r2-gearcalc/id6797484645)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Generator Engine Manager free?

Generator Engine Manager is free to download, with in-app purchases available.

### Is R2 GearCalc free?

R2 GearCalc is free to download, with no in-app purchases.

### Do Generator Engine Manager or R2 GearCalc have ads?

Neither Generator Engine Manager nor R2 GearCalc 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.*