There is no single dashboard number that clearly announces product-market fit has arrived, which is part of why so many teams either declare it too early, based on one encouraging metric, or fail to recognize it once it has genuinely shown up, waiting for a clarity that individual numbers rarely provide on their own.
Why no single metric settles the question
Retention can look strong within a narrow, unrepresentative group and mean little for the broader market. Revenue can grow steadily while masking a retention problem large enough to eventually stall it. Word-of-mouth can feel real anecdotally without showing up clearly in acquisition data yet. Each individual signal has a plausible story that would explain it away, whether fit exists or not, which is exactly why relying on any one of them in isolation tends to mislead a team in either direction.