FPE (d)

First Payment Event (FPE) is the number of devices that appeared in the selected report period and from which the first payment was made within a specified time interval. This can be an in-app payment, subscription, or custom payment (for example, an offline payment passed to MyTracker via the S2S API).

See also First Time Payers metrics to find how many devices first made a payment during the selected report period (Flow), over their lifetime (LT), or in relation to ad campaigns (CA and AT)

FPE*LifeTime metric
FPE AT*Attribution Time metric