Item logo image for Countdown Timer Pro

Countdown Timer Pro

ExtensionTools12 users
Item media 1 (screenshot) for Countdown Timer Pro

Overview

A persistent countdown timer with background notifications

This is a Chrome extension called "Countdown Timer Pro" - a persistent countdown timer with background notifications. It uses Manifest V3 and includes: - Popup interface with timer controls - Background service worker for persistent timing - Chrome storage for state persistence - Alarm system for background notifications

0 out of 5No ratings

Learn more about results and reviews.

Details

  • Version
    1.0
  • Updated
    September 13, 2025
  • Size
    24.06KiB
  • Languages
    English
  • Developer
    Email
    yu65112233ga1@gmail.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

Related

CountDown Timer

4.6

Use to count the number of days,hours,sec remaining

Simple Countdown Timer

0.0

A clean and minimal countdown timer that remembers your timer state.

Posture Checker

5.0

A posture reminder extension that helps you maintain good posture with periodic notifications

Alarm, Timer and Stopwatch

4.4

A powerful alarm extension that supports multiple timers and stopwatches with five to ten-minute snooze.

Stopwatch

1.0

A simple stopwatch Chrome extension.

Stopwatch, Timer and Alarm

4.2

For your browser, a simple to use and lightweight timer, alarm, and stopwatch.

Run In Background

4.6

Run Chrome in the background continuously.

Countdown Timer

4.4

Time Management Assistant, offering countdown timer reminders.

Stop Watch

0.0

A simple stopwatch extension

Pomodoro Timer

5.0

A simple, customizable Pomodoro timer to keep you on track

Timer stopwatch

0.0

Convenient timer/stopwatch extension for browser

Timer, Alarm & Stopwatch

3.1

An easy-to-use and lite timer, alarm, and stopwatch for your browser.

CountDown Timer

4.6

Use to count the number of days,hours,sec remaining

Simple Countdown Timer

0.0

A clean and minimal countdown timer that remembers your timer state.

Posture Checker

5.0

A posture reminder extension that helps you maintain good posture with periodic notifications

Alarm, Timer and Stopwatch

4.4

A powerful alarm extension that supports multiple timers and stopwatches with five to ten-minute snooze.

Stopwatch

1.0

A simple stopwatch Chrome extension.

Stopwatch, Timer and Alarm

4.2

For your browser, a simple to use and lightweight timer, alarm, and stopwatch.

Run In Background

4.6

Run Chrome in the background continuously.

Countdown Timer

4.4

Time Management Assistant, offering countdown timer reminders.

Google apps