DAU / MAU

Daily and Monthly Active Users. Their ratio is a stickiness measure — how many monthly users show up on a given day.

How it's calculated

Stickiness = DAU ÷ MAU

Why it matters

High stickiness means the product earned a place in the daily routine.

Net Promoter Score (NPS)

A loyalty score from a single question: 'How likely are you to recommend us?' (0–10). Promoters (9–10) minus detractors (0–6).

Conversion Rate

The percentage of people who take the action you want — visitor → signup, trial → paid, etc.