What it means
The model splits an app into a free entry point and a set of paid upgrades. Someone downloads a fitness app at no cost, uses the basic workout tracker, then pays for advanced training plans, a coaching subscription or the removal of adverts.
Each of those payments is an in-app purchase. Purchases usually fall into three families.
Consumables are used up and repurchased, such as in-game currency or extra credits; non-consumables are bought once and kept, such as a premium filter pack; and auto-renewing subscriptions bill on a repeating cycle until the user cancels. The accounting treatment differs across the three, because a subscription is recognised as revenue over the service period rather than all at once.
The commercial reality is that a very small share of users pays anything at all. Conversion rates of 1% to 5% of active users are common in consumer apps, so the business depends on a modest group of committed buyers and on keeping the free experience good enough to keep everyone else around.
Product teams therefore watch conversion rate, average revenue per paying user and churn far more closely than raw download numbers. Store commissions are the other defining feature.
The major app stores typically take a percentage of each transaction, often around 30% for the first year of a subscription and lower thereafter, and small-developer schemes reduce it further. That deduction sits between gross bookings and the cash the developer can actually spend, so any pricing model has to be built on the net figure.
Finance teams also need to watch refunds, currency mix and payment timing. Stores pay out on a lag of several weeks, refunds are deducted from later settlements, and prices set in local currencies mean reported revenue moves with exchange rates.
None of that changes the underlying product economics, but it does change the cash flow forecast.
In practice
Real-world examples.
Example
A language learning app is free to download and teaches the first ten lessons at no charge. Users who want the full course pay $9.99 per month as an auto-renewing subscription. The product team spends most of its effort on the free lessons, because that is where the decision to subscribe is made.
Example
A mobile strategy game sells packs of in-game gems that players use to speed up building times. The gems are consumable, so a committed player may buy several packs a month while most players never buy any. Roughly 3% of active players account for nearly all of the game's revenue.
Example
A photo editing app charges a one-off $24.99 to remove watermarks and open the full filter library permanently. Because the purchase is non-consumable, the developer recognises the revenue when the purchase completes rather than spreading it. Support costs on those users are low, which keeps the margin high.
Formula
Calculation
Net in-app revenue = Gross in-app revenue x (1 - store commission rate), where Gross in-app revenue = Monthly active users x Paying conversion rate x Average spend per paying user.
A fitness app has 250,000 monthly active users. 2% of them make a purchase in the month, giving 250,000 x 0.02 = 5,000 paying users. Each payer spends an average of $8, so gross in-app revenue is 5,000 x $8 = $40,000.
The app store takes a 30% commission, which is $40,000 x 0.30 = $12,000. Net revenue to the developer is $40,000 - $12,000 = $28,000. Average gross revenue per active user is $40,000 / 250,000 = $0.16 for the month.Case study
Seen in the real world.
Larkfield Studios is an invented company used here as an illustrative example of how in-app purchasing economics can mislead. The studio launched a puzzle game that hit 400,000 monthly active users and reported $90,000 of gross in-app bookings in its best month, which the founders described internally as a $90,000 revenue month.
The finance lead rebuilt the numbers on a net basis. After the 30% store commission, refunds of roughly 2% and the fact that a third of bookings were annual subscriptions that had to be recognised across twelve months, recognised net revenue for the month was closer to $45,000. Marketing spend had been set against the larger figure, and the studio had been buying users at a loss for two quarters.
Larkfield changed its reporting so every dashboard showed gross bookings and net recognised revenue side by side. In this illustrative scenario the game became profitable within four months, purely by pricing acquisition off the correct number.
Watch out
Common mistakes.
- Treating gross bookings as revenue. The store commission, refunds and unrecognised subscription balances all sit between bookings and the revenue line.
- Recognising an annual subscription in full on the day it is sold. Subscription revenue is earned across the service period and the unearned part is a liability.
- Optimising only the paid experience. Because such a small share of users converts, the free experience is what actually drives purchases.
Questions
People also ask.
What commission do the app stores charge?
Commonly around 30% of each transaction, with reduced rates for small developers and for subscriptions after the first year.
How many users typically pay?
In most consumer apps only 1% to 5% of active users make any purchase, so revenue is concentrated in a small group.
Should I use subscriptions or one-off purchases?
Subscriptions give predictable recurring revenue and suit apps with ongoing content, while one-off purchases suit tools where the value is delivered once.
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