⚠ Over budget — trim a drill or reduce transition times to fit.
Default transition time
min
Drills hold ⠿ to reorder · tap ● to color · tap name to rename
XB47
This is a simulated preview
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WhistleMark
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Connected
Schedule
Synced▾
XB47
join code
Practice clock
0:00
Budget: —
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remaining
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Schedule
tap for schedule
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Practice complete
Practice finished
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scheduled
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actual
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paused
Schedule
Rate This Session
5
110
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Go back to schedule?
The timer will stop, your progress will be lost, and the session will end for anyone else connected.
Delete this schedule?
"" can't be undone.
Move your schedules to the cloud?
Leave this session?
You can rejoin anytime with the same code.
Make head coach?
You'll become an assistant and lose control of this practice.
End this session?
This finishes practice for everyone connected and shows the summary. This can't be undone.
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You can sign back in anytime with the same email and password.
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Joining requires an account, so the head coach can see who's connected.
Join a session
Enter the code your head coach shared with you.
Settings
Install WhistleMark
Opens full screen like a regular app. No app store needed.
Changed your mind? You can still install from your browser's menu.
In Safari, tap Share (under ••• if you don't see it), then Add to Home Screen. Open it from your home screen and sign in there.
You have schedules saved on this device. Sign in first and move them to your account, or they won't appear in the installed app.
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About WhistleMark
A live practice timer for coaching teams, built to sync all staff to one clock in real time.
Current version
v0.1.1-beta — a prototype running in the browser, no download needed. Sign in and your whole coaching staff syncs to one live clock, with schedules saved to the cloud. Without an account, schedules stay on this device only and sync runs as a simulated preview.
What's coming
Automatic staff invites, voice messages between coaches, offline use, and a Pro tier.
Leave feedback▾
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WhistleMark v0.1.1-beta
WhistleMark
One Team. One Clock.
WhistleMark
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WhistleMark
One Team. One Clock.
Install WhistleMark
Opens full screen like a regular app. No app store needed.
Changed your mind? You can still install from your browser's menu.
In Safari, tap Share (under ••• if you don't see it), then Add to Home Screen. Open it from your home screen and sign in there.
You have schedules saved on this device. Sign in first and move them to your account, or they won't appear in the installed app.
ⓘ
Sync, cloud-saved schedules, and staff features require an account. Without one, schedules are saved locally to this device only.
WhistleMark is a live practice timer built to keep your whole coaching staff in sync. Build a schedule, tap Start Session, and share your join code so every coach sees the same countdown. We're in beta, so let us know how it feels using the feedback option in the settings cog menu. Thanks for helping us test!