Choose a free trial length from observed activation

Give customers enough time to reach value without guessing the right duration.
Measure time to a useful milestone
Track days from signup to the first meaningful outcome, such as producing a usable report. Distinguish people who are waiting for data from people who never begin.

Compare trial lengths with the right outcomes
A longer trial can improve access for slow setups while delaying payment. Compare activation, first payment, and later retention at equivalent cohort ages. Include support costs and trial abuse where relevant.
Design a test around the bottleneck
If customers get stuck during setup, improving instructions may help more than adding days. Test the smallest meaningful change and document who needs extra time.
Try a related tool
Estimate payback for a subscription cohort with monthly retention.


