Comparison

TeamWhistle vs WhistleOS

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

Head to head
About

TeamWhistle

Read full description

TeamWhistle is an watchOS app for hockey umpires that allows you to easily keep track of all match data such as time, cards and goals. It also has a huge amount of extra functionality for all your different umpiring needs such as: - Workout metrics - Heatmaps and pitch routes - Weather information - Synchronisation of data between users - Shootout goal tracking - Digital toss coin For more info, guides and contact visit https://developmenthawkeye.github.io/teamwhistle-website

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: TeamWhistle at none against WhistleOS's 2. TeamWhistle also leads on iOS requirement (13.0 vs 17.0). WhistleOS's advantage is update cadence (every 11 days vs every 6 weeks). On price, ads and device support 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. TeamWhistle asks for nothing beyond the download.

UpkeepUpdate frequency

TeamWhistle ships an update every 6 weeks, WhistleOS every 11 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 3 level
TeamWhistle versus WhistleOS: the parameters behind the verdict, then further details
ParameterTeamWhistleWhistleOS
PriceFreeFree
Update frequencyEvery 6 weeksEvery 11 days — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPod, Apple WatchiPhone, iPad, Apple Watch
Requires iOS13.0 — better17.0
Further details — not scored
Size9 MB32 MB
Age rating4+4+
DeveloperHomerus HooglandLorand Barabas

In-app purchases

None

TeamWhistle

No in-app purchases

2 purchases

WhistleOS

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

Questions

Is TeamWhistle free?
TeamWhistle is free to download, with no in-app purchases.
Is WhistleOS free?
WhistleOS is free to download, with in-app purchases available.
Do TeamWhistle or WhistleOS have ads?
Neither TeamWhistle nor WhistleOS shows ads.
Which is updated more often, TeamWhistle or WhistleOS?
TeamWhistle ships an update every 6 weeks, and WhistleOS every 11 days. Most recently, TeamWhistle was updated on October 28, 2026 and WhistleOS on October 31, 2026.

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