# Universal Score Tracker vs WhistleOS

The clearest difference is iOS requirement: WhistleOS at 17.0 against Universal Score Tracker's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Universal Score Tracker sells 2 in-app purchases, starting at $2.99 per month and WhistleOS sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Universal Score Tracker ships an update every 2 weeks, WhistleOS fortnightly. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Universal Score Tracker | WhistleOS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Size | 22 MB | 32 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Josh Pavey](https://appshunter.io/developer/871421796) | [Lorand Barabas](https://appshunter.io/developer/6814266536) |

## What reviewers say

### Universal Score Tracker

[App page](https://appshunter.io/ios/app/universal-score-tracker/id6792562297)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support, SharePlay

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Universal Pro (Monthly) | $2.99 | per month |
| Universal Pro (Annual) | $9.99 | per year |


### WhistleOS

[App page](https://appshunter.io/ios/app/whistleos-referee-app/id6814266534)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WhistleOS Pro monthly | $3.99 | per month |
| WhistleOS Pro yearly | $44.99 | per year |


## Frequently asked questions

### Is Universal Score Tracker free?

Universal Score Tracker is free to download, with in-app purchases available.

### Is WhistleOS free?

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

### Do Universal Score Tracker or WhistleOS have ads?

Neither Universal Score Tracker nor WhistleOS shows ads.

### Which is updated more often, Universal Score Tracker or WhistleOS?

Universal Score Tracker ships an update every 2 weeks, and WhistleOS fortnightly. Most recently, Universal Score Tracker was updated on October 25, 2026 and WhistleOS on October 24, 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.*