# TTS Scorekeeper vs WhistleOS

The clearest difference is in-app purchases: TTS Scorekeeper at none against WhistleOS's 2. WhistleOS's advantage is device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. WhistleOS sells 2 in-app purchases, starting at $3.99 per month. TTS Scorekeeper asks for nothing beyond the download.

TTS Scorekeeper ships an update fortnightly, WhistleOS every 11 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | TTS Scorekeeper | WhistleOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tts-scorekeeper/id6743828170/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 11 days** |
| Monetization | Free | — |
| Size | 36 MB | 32 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Time to Score, Inc](https://appshunter.io/developer/1061795609) | [Lorand Barabas](https://appshunter.io/developer/6814266536) |

## What reviewers say

### TTS Scorekeeper

[App page](https://appshunter.io/ios/app/tts-scorekeeper/id6743828170)

Easily track hockey game events like lineups, penalties, and goalie changes in real-time. Control traditional or video scoreboards with a modern interface designed for speed.

**Highlights:** Real-time event tracking, Lineup management, Penalty tracking, Goalie change logging, Scoreboard control, Sleek interface

**In-app purchases:** none


### 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 TTS Scorekeeper free?

TTS Scorekeeper is free to download, with no in-app purchases.

### Is WhistleOS free?

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

### Do TTS Scorekeeper or WhistleOS have ads?

Neither TTS Scorekeeper nor WhistleOS shows ads.

### Which is updated more often, TTS Scorekeeper or WhistleOS?

TTS Scorekeeper ships an update fortnightly, and WhistleOS every 11 days. Most recently, TTS Scorekeeper was updated on October 30, 2026 and WhistleOS on October 31, 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.*