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What is In-app purchase?

Definition, examples, and more

Definition

A transaction made within the app to unlock content, features, or virtual goods. For subscription apps, IAPs can be used for one-time purchases alongside recurring plans, and must comply with Apple and Google's platform rules for digital goods.

How to Calculate

IAP Revenue = Units Sold x Price per Unit. Net IAP Revenue = IAP Revenue x (1 - Platform Fee). For example: 500 sleep packs x $4.99 = $2,495 gross. After Apple's 30%: $1,747 net. IAP-to-Subscription Conversion Rate = IAP Buyers Who Later Subscribe / Total IAP Buyers x 100.

Example

A meditation app offers both subscriptions ($9.99/month for all content) and individual IAPs ($4.99 for a specific sleep story pack). Users who buy a one-time IAP convert to full subscriptions at 45% within 90 days — making the IAP both a revenue source and a subscription on-ramp.

Why In-app purchase Matters

In-app purchases let you monetize users who are not ready to commit to a subscription. A photo editing app added one-time filter pack purchases ($2.99 each) alongside their $7.99/month subscription. These IAPs generated $12K/month from users who would not have subscribed, and 30% of IAP buyers eventually upgraded to the full subscription — proving that small purchases build trust that leads to bigger commitments.

Frequently Asked Questions

What types of in-app purchases work best alongside subscriptions?

Consumables (credits, tokens), non-consumable add-ons (specific content packs, themes), and lifetime unlock options work well alongside subscriptions. The key is offering IAPs that complement rather than cannibalize your subscription. If users can get everything they need from $2.99 IAPs, they will never subscribe.

Do Apple and Google take a cut of all in-app purchases?

Yes. Both platforms charge a commission on all in-app purchases of digital goods and services. Apple charges 30% (15% for Small Business Program members or after first year of subscription). Google charges 15% for subscriptions. Physical goods and services sold through apps are not subject to these fees.

Should I offer a lifetime purchase option?

It depends on your economics. A lifetime option at 3-4x annual price can attract one-time buyers and generate upfront revenue. But it caps the user's LTV and can cannibalize recurring revenue. If you offer it, price it high enough that the subscription remains the better deal for most users. Some apps make lifetime available only as a retention offer for long-term subscribers.

Category
Subscription App Terminology
Related Area
Mobile App Growth & Monetization

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