Competitors don't announce most changes
Price increases and new positioning rarely come with a press release. The page just changes one day.
With ChangeGist watching, you'll get something like “They removed the free trial and added a $15 Starter plan” in your inbox the same day.
Handy for more than one team
Product people see new features as they ship. Sales hears about a pricing change before a prospect brings it up on a call. Marketing notices when a competitor starts going after the same customers.
Scroll back through the history
Every change is saved with its summary and the exact text that changed. A few months in, you can see how a competitor's pricing and messaging have moved over time.