Period Countdown

Period Countdown

A Chrome extension that accompanies the Period Countdown ( website.

What is Period Countdown?
"Period Countdown" is a handy Chrome extension designed to help you keep track of your class or work schedules. It syncs with the Period Countdown website (, allowing you to set preferences on the website that instantly reflect in the extension. Kindly note, the extension and its website are not officially endorsed by any high school, hence accuracy is not fully guaranteed.
Users: 1,000+
Rating: 5.00 (4)
Version: 4.0.0 (Last updated: 2020-08-20)
Creation date: 2019-07-14
Risk impact: Very low risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
Size: 110.59K
Stats date:

Other platforms

Not available on Firefox
Not available on Edge
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Do you ever find yourself wondering how many minutes remain before lunch? Or how many minutes you have until class begins? After installing this extension, you can easily and quickly open an interactive countdown timer that shows this information and more. This extension accompanies Period Countdown (web application located at The website and extension interact seamlessly — thus, when you change a preference on the full website (like a period name or theme), the changes will immediately propagate to the extension.

Disclaimer: This extension and its website ( are not officially endorsed or affiliated with any high school. Thus, we cannot guarantee the accuracy of our applications.

User reviews
This is amazing - and they tried to stop us from writing reviews! All 2,000 people here love you for this. May you tread gracefully in life. :)
by Entity the Great Entity the Great, 2024-02-06

Exceptional coding and interface, love to spend the last minutes of class staring at this chrome extension. Good job Arjun!
by Isabella Ge Isabella Ge, 2018-09-08
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Risk impact

Period Countdown is safe to use. It does not request any sensitive permissions.

Risk likelihood

Period Countdown has earned a fairly good reputation and likely can be trusted.

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