PageDog
AI website change monitoring for Mac. PageDog is a local-first Mac app that checks a selected webpage area on a schedule and uses hosted AI to decide whether the alert condition you described was met.

Key facts
What is PageDog?
AI website change monitoring for Mac. PageDog is a local-first Mac app that checks a selected webpage area on a schedule and uses hosted AI to decide whether the alert condition you described was met.
Frequently asked questions
What does PageDog ask me to track?
Every watch needs one testable alert condition, such as 'alert me when this fare is below €80.' PageDog checks the condition before it starts watching.
Can PageDog monitor signed-in pages?
PageDog reuses a persistent local browser session on your Mac, so many signed-in pages keep working between checks.
How does the AI checking work?
AI checks whether the condition was met and explains its decision using the selected area, while checks run on your Mac.