The Kelly Criterion answers the question every winning bettor eventually faces: I think I have an edge — how much should I risk? It sizes your stake from two inputs, your win probability and the price, growing your bankroll fastest over the long run while making it mathematically impossible to go broke from a single losing streak.
Full Kelly is aggressive — it assumes your win probability is exactly right, which it never is. That is why Covrr (and most professionals) stake a fraction of it: the app itself suggests quarter-Kelly stakes on model alerts. When the math says your edge is zero or negative, the answer is 0% — no edge, no bet.
