Comparison

Whistle Time vs zRef

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

Head to head
About

Whistle Time

This sports timing app helps referees manage matches with customizable timers, card tracking, and real-time data syncing. It also offers post-match analysis and a unique heatmap feature to track on-field movement.

Highlights
  • Customizable match periods and warnings
  • Yellow/red card and penalty tracking
  • Cross-device syncing (watch, phone, TV)
  • Live match data sharing
  • Post-match event overview
  • On-field movement heatmap analysis
Features
Read full description

Take Control of the match with Whistle: Your Ultimate Football Referee Companion Whistle is the perfect refereeing tool for football and any sport requiring precise time management. Whether you're officiating a high-stakes match or a friendly kickabout, Whistle provides the features you need to stay on top of every second, and now, even analyze your on-field movement with our innovative heatmap technology. Effortless Time Management Easily configure match periods, including half-time and injury time, with customizable warnings as the clock winds down or counts up. Track yellow and red cards, including time penalties, with automatic alerts when a player's penalty is over. Save your regular match settings as templates for quick selection – perfect for switching between standard adult football (2 x 45 minutes) and youth matches (e.g., 4 x 15 minutes). Nine pre-loaded sport templates, including football, are ready to go right out of the box. Beyond Football Whistle's flexible design adapts to various sports, including hockey, handball, basketball and rugby. Customize periods, breaks, and even card rules to perfectly match your sport's regulations. Track Cards and Penalties Manage cards with configurable penalty durations. Whistle automatically tracks penalty time and notifies you when a player can return to the field. Keep a clear record of all card events throughout the match. Seamless Syncing Across Devices Whistle seamlessly syncs across your smartwatch, phone, and TV, providing ultimate flexibility and control. Share live match data with assistant referees, coaches, or even spectators using a unique match code or a quick link generated directly within the app. Everyone connected sees real-time updates to the score, time, cards, and other key events. Imagine the convenience of your assistant referee having all the match information right on their wrist! Post-Match Analysis & Heatmap Insights After the final whistle, Whistle generates a comprehensive overview of all match events, including duration, cards issued, goals scored, and breaks taken. But the insights don't stop there! Introducing our brand-new Heatmap feature: by utilizing your device's GPS, Whistle can now track your location throughout the match, generating a personal heatmap of your on-field movements. This powerful visual tool, available in the match overview and accessible later in your match history when logged in, allows you to analyze your positioning, coverage patterns, and overall engagement during the game. It’s perfect for self-assessment and identifying areas for improvement in your refereeing mechanics. This detailed log and advanced positional analysis is perfect for record-keeping and truly in-depth post-match review. Intuitive and Easy to Use Whistle is designed for quick, in-game adjustments. Double-tap the icon, time, or score for instant actions. Need to stop the clock quickly? Long-press the pause action or double-tap the rest icon.

About

zRef

This app helps referees manage sports matches by tracking time, logging goals, cautions, and ejections. It provides a timer and stopwatch for game management and generates end-of-game reports with scores and event details.

Highlights
  • Match time tracking
  • Goal logging
  • Caution and ejection tracking
  • Timer and stopwatch
  • End-of-game reports
  • Simple match creation
Read full description

zRef is a refereeing app to help you keep track of your matches. The app can keep track of time, log goals, cautions, ejections, and more. The app is simple to use. Simply create a new match, and supply the time per half. Click the start button to start the timer and press it to stop. There is a timer and stopwatch, so you can know he time remaining and the elapsed time for filling out game cards. You can also click and hold start/stop the button to log things such as goals, cautions, and ejections. When the game is over, you will be given an end of game report. This will contain the final score and each event that occurred (including time).

Screenshots

Whistle Time4 screens

Verdict

The call

The clearest difference is review sentiment: Whistle Time at 100% against zRef's 50%. Whistle Time also leads on update cadence (fortnightly vs every 2 months). zRef's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price 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. Whistle Time sells 2 in-app purchases, starting at $1.99 per month. zRef asks for nothing beyond the download.

UpkeepUpdate frequency

Whistle Time ships an update fortnightly, zRef every 2 months. The most recent releases landed on September 22, 2026 and September 9, 2026 respectively.

Scorecard6 real differences · 4 level
Whistle Time versus zRef: the parameters behind the verdict, then further details
ParameterWhistle TimezRef
PriceFreeFree
Rating—4.0 (6 ratings) — better
Positive reviews100.0% of reviews — better50.0% of reviews
Number of ratings—6 — better
Update frequencyFortnightly — betterEvery 2 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, Apple WatchiPhone, iPod, Apple Watch
Requires iOS16.413.0 — better
Further details — not scored
Size72 MB1 MB
Age rating4+4+
DeveloperRobbert BrackelRami Sinno

Customer experience

Whistle Time

Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

zRef

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

2 purchases

Whistle Time

Subscriptions2
  • Without adds$1.991 Month
  • Without adds$17.991 Year
None

zRef

No in-app purchases

Questions

Is Whistle Time free?
Whistle Time is free to download, with in-app purchases available.
Is zRef free?
zRef is free to download, with no in-app purchases.
Do Whistle Time or zRef have ads?
Whistle Time shows ads; zRef does not.
Which is updated more often, Whistle Time or zRef?
Whistle Time ships an update fortnightly, and zRef every 2 months. Most recently, Whistle Time was updated on September 22, 2026 and zRef on September 9, 2026.

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