Comparison

TTS Scorekeeper vs WhistleOS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

TTS Scorekeeper

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
Read full description

TTS Scorekeeper is the ultimate solution for keeping score of hockey games at any level, all while the action is taking place. Track lineups, scoring, penalty, goalie change and other event data, as well as control your traditional or video scoreboards, all from a sleek, updated interface designed to quickly capture game data. Hockey is a fast game. Your scoring tools should keep up.

About

WhistleOS

Features
Read full description

WhistleOS is the app for football referees – from grassroots to elite. You run the match on Apple Watch and prepare and review it on iPhone. ON YOUR WATCH • Match clock with halves, stoppage-time suggestion and pause clock • Goals (incl. penalties and own goals), yellow, second yellow and red with reason • Cards for coaches and team officials, substitutions with bench and starting XI • Heart rate, steps and running route during the match • Three colour themes: light, pitch and contrast ON YOUR IPHONE • Import line-ups from a photo, screenshot or PDF (AI) and send them to the watch • Import your assignments from e-mails or reports • Match report with timeline, summary and PDF export • Special reports for sending-offs • Expense receipts with signature – the fee is taken from your association's fee list • Season statistics with distance and heatmap FOR ASSESSORS • Observation forms: German DFB, England (FA), Netherlands (KNVB), a generic international template – or import your association's form from a photo • Notes with minute, thumbs up/down and pitch position • AI suggestion for the ratings based on your notes – every rating stays editable WHISTLEOS PRO All features are free for 14 days. After that: WhistleOS Pro monthly or yearly. The subscription renews automatically and can be cancelled at any time in your Apple Account settings. PRIVACY Matches, heart rate and route stay on your device. Health data is not included in iCloud backups. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sites.google.com/view/datenschutzwos

Screenshots

WhistleOS4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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

Scorecard2 real differences · 7 level
TTS Scorekeeper versus WhistleOS: the parameters behind the verdict, then further details
ParameterTTS ScorekeeperWhistleOS
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyFortnightlyEvery 11 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPadiPhone, iPad, Apple Watch — better
Requires iOS18.017.0 — better
Further details — not scored
Size36 MB32 MB
Age rating4+4+
DeveloperTime to Score, IncLorand Barabas

In-app purchases

None

TTS Scorekeeper

No in-app purchases

2 purchases

WhistleOS

Subscriptions2
  • WhistleOS Pro monthly$3.991 Month
  • WhistleOS Pro yearly$44.991 Year

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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