Trial-to-paid conversion rate
Trial-to-paid conversion rate is the share of free trials that become paying subscriptions within a defined window. It links acquisition cost per trial to acquisition cost per paying customer.
Ad platforms are very good at buying trials, and trials are the wrong thing to optimize if most of them never pay. Trial-to-paid is the bridge between the metric the platform sees and the metric the business lives on.
A worked example, as arithmetic. At $20 per trial and 10% trial-to-paid, each paying customer costs $200. A channel producing $14 trials at 5% conversion looks cheaper in the ad account and is actually worse: $280 per paying customer. Judge channels on cost per paying customer, not cost per trial.
Define the window and the denominator before comparing. Card-required trials convert at very different rates from card-free trials, and a seven-day trial cannot be compared with a thirty-day trial on the same calendar. Send the first-payment event back to the ad platforms as a conversion, so bidding learns from payers rather than from signups.
Knowing what Trial-to-paid conversion rate means isn’t the edge.
Knowing what it’s doing to live accounts right now is. Operator notes from $200M+ in managed spend — sent when we find something worth your time.
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