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FinToolSuite
Updated May 14, 2026 · Creator Economy · Educational use only ·

In-App Purchase Revenue Calculator

Net IAP revenue after fees.

Calculate in-app purchase revenue with store fees and repeat rate. Enter daily active users and iap conversion to see net iap revenue from dau and conversion.

What this tool does

This calculator estimates the net revenue generated from in-app purchases after platform fees are deducted. It models monthly and annual revenue by combining five core factors: your daily active user base, the proportion of users who make purchases, the average transaction value, how often users buy again, and the store's fee structure. The result shows what remains after the platform takes its cut. Conversion rate and repeat purchase behaviour typically have the strongest influence on final revenue. A common scenario involves a mobile game testing revenue projections under different user engagement levels. The calculation uses simplified assumptions—it doesn't account for refunds, currency fluctuations, regional fee variations, or differences in user lifetime value across cohorts. This output is for modelling purposes and illustrates how these factors interact, rather than predicting actual revenue outcomes.


Enter Values

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Formula Used
Gross IAP revenue
Store fee

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Disclaimer

Results are estimates for educational purposes only. They do not constitute financial advice. Consult a qualified professional before making financial decisions.

In-app purchase (IAP) revenue depends on DAU, IAP conversion rate, average purchase value, and repeat rate. Store fees take 30% (or 15% for subscriptions/small business). This calculator shows net IAP revenue.

50k DAU × 3% IAP conversion = 1,500 paying users daily × 30 days × 5 average × 40% repeat = 72k purchases monthly at 5 = 360k gross, 252k net. Strong game economics.

IAP conversion rates vary: casual games 1-3%, mid-core 3-8%, hardcore 5-15%. Average purchase value: 3-15 typical; whales (top 1%) often drive 50-70% of revenue. This calculator averages but reality has long tail.

A worked example

Try the defaults: daily active users of 50,000, iap conversion of 3%, average iap value of 5, repeat purchase rate of 40%. The tool returns 283,500.00. You can adjust any input and the result updates as you type — no submit button, no reload. That's the real power here: seeing how sensitive the output is to one or two assumptions.

What moves the number most

The result responds to Daily Active Users, IAP Conversion %, Average IAP Value, Repeat Purchase Rate %, and Store Fee %. Not every input has equal weight. Adjusting one input at a time toward extreme values shows which ones move the result most.

The formula behind this

Paying users = DAU × conversion %. Monthly purchases = paying × 30 + repeats. Gross = purchases × avg value. Net = gross × (1 - fee %). Everything the calculator does is shown in the formula box below, so you can check the math against your own spreadsheet if you want.

What the score tells you

Headline financial numbers — income, savings, debt — each tell part of the story. This calculation stitches several together into a single read you can track over time. The value is in the direction, not the absolute number.

What this doesn't capture

The score is a composite of the inputs you provide. Life context — job security, family obligations, health, housing — doesn't appear in the math but shapes the real picture. Use the number as a prompt, not a verdict.

Example Scenario

50,000 DAU × 3% × ££5 × 40% × 30% = 283,500.00.

Inputs

Daily Active Users:50,000
IAP Conversion %:3
Average IAP Value:£5
Repeat Purchase Rate %:40
Store Fee %:30
Expected Result283,500.00

This example uses typical values for illustration. Adjust the inputs above to match a specific situation and see how the result changes.

Sources & Methodology

Methodology

Paying users = DAU × conversion %. Monthly purchases = paying × 30 + repeats. Gross = purchases × avg value. Net = gross × (1 - fee %).

Frequently Asked Questions

Whales matter?
Top 1% of payers often drive 50-70% of IAP revenue in mobile games. Averages mask this. If you have 100k DAU and 50k/mo IAP, your top 100 users may spend 30k+.
Why does changing the conversion rate affect revenue more than changing DAU?
Conversion rate feeds into every downstream calculation — paying users, monthly purchases, and gross revenue all scale directly with it, so a small percentage shift compounds across the full formula. DAU is a multiplier too, but conversion rate changes the ratio of monetising users rather than just the pool size, which means the revenue impact per unit change is typically steeper. This is why mobile publishers often prioritise conversion optimisation over pure user acquisition when margins are tight.
How does the repeat purchase frequency factor work in this calculator?
The model adds repeat purchases on top of the base monthly purchase count, treating them as additional transactions from the same paying user pool within the 30-day window. This means a paying user who buys once and then repurchases twice contributes three transactions to gross revenue rather than one. The approach is a simplification — it applies a flat repeat rate across all payers rather than modelling cohort-level behaviour or purchase intervals.
What platform fee percentage should I use if my app is on both iOS and Android?
Standard store fees are 30% for both Apple App Store and Google Play, though both platforms offer reduced rates — typically 15% — for developers earning below certain annual revenue thresholds or enrolled in specific programs. Because this calculator applies a single fee rate, blended multi-platform scenarios require running separate calculations per store and combining the net figures manually. Regional fee variations and alternative billing agreements are not captured in the model.

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