PageWatch – content-change browser alerts

Get a phone notification when a page changes, stop staring at it

Problem

When waiting for scores, restocks, or ticket status updates, users install an auto-refresh extension and keep switching back to check. Refreshing is easy; knowing whether something changed still requires human eyes, and phones get no alert.

Solution

A browser extension refreshes pages on a schedule and watches for a specified text appearing/disappearing or a selected region changing. On trigger, it pushes a notification to the phone via Bark, ntfy, Telegram, WeCom bots, etc., and shows before/after content diffs.

Users

Everyday users stalking restocks, grades, or ticket statuses, plus ops and support staff monitoring admin dashboards

MVP

Scheduled refresh (seconds to hours) with per-tab timers; content watch (text appear/disappear, selection change); push to phone via Bark/ntfy/Telegram; no accounts or cloud sync

Revenue

Free basic refresh plus a Pro one-time purchase unlocking content monitoring and extra push channels; optional team seat subscription

Why now

Browser extensions are cheap to build and distribute via store search, and push channels like Bark, ntfy, and ServerChan are mature and free, so a solo dev can launch with no backend