Live from the users table. Retention is approximated from last-login (see note under the retention chart).
Rough heuristic, not a quote. ARR (annual recurring revenue) ≈ premium users × the yearly price, assuming everyone's on the annual plan. The band is the usual consumer-subscription multiple (≈3×–8× ARR). It's near $0 until you have paying users — value comes from retention + paid conversion (the charts above), not the code. A real acquirer also pays a premium at scale to absorb a growing competitor, which a revenue multiple alone doesn't capture.