# PRCalc Tracker vs GyroOSC

The clearest difference is in-app purchases: PRCalc Tracker at none against GyroOSC's 1. GyroOSC's advantage is iOS requirement (15.6 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. GyroOSC sells 1 one-off in-app purchase. PRCalc Tracker asks for nothing beyond the download.

## The numbers

| Metric | PRCalc Tracker | GyroOSC |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Size | 1 MB | 1 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SEUNGYONG YU](https://appshunter.io/developer/1488562262) | [Zhuoran Liu](https://appshunter.io/developer/1787612055) |

## What reviewers say

### PRCalc Tracker

[App page](https://appshunter.io/ios/app/prcalc-tracker/id1488562263)

**Features:** macOS Compatibility

**In-app purchases:** none


### GyroOSC

[App page](https://appshunter.io/ios/app/gyroosc/id6753916733)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock unlimited streaming | $3.99 | one-time |


## Frequently asked questions

### Is PRCalc Tracker free?

PRCalc Tracker is free to download, with no in-app purchases.

### Is GyroOSC free?

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

### Do PRCalc Tracker or GyroOSC have ads?

Neither PRCalc Tracker nor GyroOSC 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.*