App Monetization Calculators
Ad revenue, in-app purchases, store fees, lifetime value, and user acquisition payback — modelled on the same net-revenue basis so you can see which lever is actually worth pulling this quarter.
The four numbers that decide a mobile app's economics
ARPDAU tells you what a day of attention is worth. Retention turns that into lifetime value. CPI sets what you pay for the next user. And store fees quietly remove 15–30% of everything before any of it reaches you. Get all four in one model and most monetization arguments resolve themselves.
The mistake that sinks the most UA budgets is projecting LTV by multiplying ARPU by an assumed lifetime. Retention decays as a power curve, not a straight line, so that shortcut typically overstates 365-day value by 20–40% — enough to turn a profitable campaign into a loss-maker on paper only after the money's spent. The LTV calculator fits the curve properly from your D1 and D30 numbers.
Rebalancing ad load? Ads and purchases compete for the same users. Model both together in the IAP vs ads mix calculator rather than optimising ad ARPDAU in isolation.
ARPDAU Calculator
Average revenue per daily active user from ads and IAP, with mix and ARPMAU.
Mobile App LTV Calculator
Retention-curve LTV at D30/90/365 and the max CPI your LTV supports.
UA Payback Period Calculator
CPI vs LTV across the retention curve — payback day, D30 ROAS, and LTV:CAC.
Mobile App Ad Revenue Calculator
Banner, interstitial, and rewarded revenue by eCPM and fill, net of mediation fees.
Rewarded Video Revenue Calculator
Engagement rate, daily caps, and completion turned into rewarded ad revenue.
IAP vs Ads Revenue Mix Calculator
Hybrid monetization mix with cannibalisation and retention drag priced in.
App Store Fee Calculator
What you keep after commission, VAT, refunds, and FX — 15% vs 30% modelled.
AdMob Revenue Calculator
Mobile app ad earnings from DAU, sessions, fill rate, and eCPM across banner, interstitial, and rewarded video.
A sane order to work through them
- Establish net ARPDAU after store and mediation fees — everything downstream depends on it.
- Fit the retention curve and get honest D30, D90, and D365 LTV.
- Compare LTV against effective CPI, crediting only measurable organic uplift.
- Check payback day, not just the ratio — cash timing kills more studios than margin does.
- Only then optimise ad load, and always against net ARPDAU rather than ad revenue alone.