Get one safe success first.
Open the practice page, run Test this page, and confirm the live monitor catches browser activity.
Welcome
Session Activity Helper is browser-only. Start by testing the exact web app that keeps interrupting you, then save repeat workflows once you know the page behaves well.
It cannot move the operating-system cursor, prevent device sleep, or override site, school, workplace, browser, device-management, or administrator session rules.
Open the practice page, run Test this page, and confirm the live monitor catches browser activity.
Keep Session Activity Helper visible in the Chrome toolbar so the status is easy to check.
Use a normal website tab, not Chrome settings, the Web Store, or another extension page.
Confirm the helper can inject, then start a visible session and watch last pulse.
When Pro makes sense
Free is for one saved site and manual testing. Pro is for repeat workflows where saved profiles, advanced recipes, longer run windows, and diagnostics are worth more than restarting sessions by hand.
Compare Free and ProShare after value
Referral setup is available on the website with clear disclosure copy. Chrome Web Store reviews are never rewarded.