Mobile app tools

Free app DAU/MAU stickiness calculator. Enter daily and monthly active users to see your stickiness ratio, average days active per user, and monthly engagement time — with context on what the ratio means for habit formation.

Free App Store revenue calculator. Enter gross revenue to see your net payout after Apple or Google's commission — or enter a target net payout to see the gross you need. Covers both the 30% standard rate and the 15% small developer and subscription rate.

Free UA ROAS calculator for mobile apps. Enter ad spend, installs, and Day 7 / Day 30 revenue per install to see gross and net ROAS at each cohort window — and the revenue per install needed to break even.

Free CPI break-even calculator for mobile apps. Enter your cost per install, Day 30 retention, monthly ARPU, and platform commission to see your payback period and the maximum CPI you can afford.

Free app rating lift calculator. Enter your current rating, review count, and target rating to see exactly how many 5-star reviews you need — and how many review prompts to send if only a fraction of users respond.

Free app retention curve projector. Enter your Day 1, Day 7, and Day 30 retention rates to project Day 90 and Day 365 retention using a power-law decay model — with benchmark comparisons for games, utility apps, and social apps.

Free subscription app LTV calculator. Enter your monthly price, churn rate, trial conversion rate, and platform commission to see subscriber LTV, net LTV after platform cut, and the maximum CPI you can afford for profitable user acquisition.