Their launch day is your launch day.

A competitor never emails you when they reposition. The homepage headline changes on a Tuesday, three new integrations appear on the partners page, and the changelog quietly grows an "AI" section — and unless someone on your team happened to visit that week, you find out from a prospect who asks why you don't have the same thing.

modsignal watches the pages where product strategy actually shows up: the homepage, the changelog, the integrations directory, the feature page you're benchmarked against. Describe the change that matters — tell me if the hero copy changes, alert me when they announce anything AI-related — and it reads the new version against the old one and tells you, in a sentence, what moved.

Every alert carries the before and after, so the message to your product-marketing channel writes itself. This is semantic-tier work: marketing pages get copy-edited constantly, and an exact-diff monitor would page you on every comma. The semantic tier ignores the rewording and fires on the repositioning.

Most teams watch three to five competitors, one monitor per page that matters — homepage, pricing, changelog. Daily checks are usually enough; positioning doesn't change at 2am, and when it does change you still want to be the first person in the building to know.