Signal watches your competitors' ASINs around the clock — price, stock, Buy Box, rank — and sends you a daily digest that skips the noise and flags what actually matters.
Paste in the ASINs you care about — takes about two minutes for a typical set of 10–30 listings.
Price, stock, Buy Box ownership, rank, and listing changes get checked throughout the day, every day.
Only changes worth acting on land in your inbox — no scrolling through noise to find the signal.