Countdown Timer Pro
25 users
Version: 1.0
Updated: 2025-09-13
Available in the
Chrome Web Store
Chrome Web Store
Install & Try Now!
storage alarm it for notifications. service interface manifest a persistent - with with a state includes: pro" notifications popup uses timer background v3 chrome worker - system timer chrome is persistence and this controls - background timing countdown - called "countdown - extension background timer persistent for for

