17,000 apps reveal optimal free trial lengths: 30 days converts best for annual plans

The Gist

• 30-day trials convert 44.6% vs 24% for 4-day trials on annual plans
• First renewal jumps from 18.3% to 47.5% with longer trials
• AI apps hit conversion wall at 16 days
• Annual plan trials convert 86% better with 30-day trials

• 30-day free trials convert best for annual subscription plans, with 44.6% conversion rate and 47.5% first renewal rate.
• Short trials (4 days or less) perform worst on annual plans, with only 3.5% of users both paying and renewing after a year.
• For monthly plans, conversion peaks at 10-16 day trials (38.5%) while renewal rates continue improving up to 32 days.
• AI products show diminishing returns beyond 16-day trials due to inference costs, with conversion dropping sharply at 17-32 days.
• Regional differences exist - North America/Europe favor longer annual trials while emerging markets convert better with shorter monthly trials.
• No-trial annual plans outperform short-trial annual plans in renewal rates (26.6% vs 18.3-25.3%), suggesting buyers need either instant conviction or extended evaluation.

• Extend annual plan trials to 30 days instead of the standard 14 days to improve conversion and retention.
• For AI products, cap free trials at 16 days and use usage limits (credits/runs) rather than extending calendar time.
• Test regional trial lengths - shorter for emerging markets (5-9 days) while maintaining longer for NA/EU.
• Consider removing trials entirely for annual plans if you have strong product-market fit, as no-trial renewals outperform short trials.

• 44.6% (Conversion rate for 17-32 day trials on annual plans)
• 47.5% (First renewal rate for 17-32 day annual trials)
• 18.5% (Percentage of trial users who both paid and renewed after 17-32 day annual trials)
• 38.5% (Peak conversion rate for 10-16 day monthly trials)
• 77.9% (Renewal rate for 17-32 day trials in utility apps)
• 17,000+ (Number of mobile apps analyzed in the study)