In-App Purchasing link

Ren'Py includes a high-level in-app purchasing framework. This framework currently only supports unlock-style purchases from the Apple App Store, Google Play, and the Amazon App Store.

Using this framework is fairly simple, and consists of the following functions.

To offer in-app purchases, the purchases (including an associated price) must be set up on the various marketplaces. When building for android, Ren'Py will ask for the marketplace in use when configuring the package.

Apple App Store
The Apple App Store is based on the package name, and does not require special configuration.
Google Play
Before Google Play can be used, you must add the google play key and a salt to your project. See the Expansion APK section for information on how to do this.
Amazon App Store
The Amazon app store is based on the package name, and does not require special configuration.

IAP Functions link

iap.get_price(product) link

Returns a string giving the price of the product in the user's local currency. Returns None if the price of the product is unknown - which indicates the product cannot be purchased.

iap.get_store_name() link

Returns the name of the enabled store for in-app purchase. This currently returns one of "amazon", "play" (for Google Play), "ios" or None if no store is available.

iap.has_purchased(product) link

Returns True if the user has purchased product in the past, and False otherwise.

iap.is_deferred(product) link

Returns True if the user has asked to purchase product, but that request has to be approved by a third party, such as a parent or guardian.

iap.purchase(product, interact=True) link

This function requests the purchase of product.

It returns true if the purchase succeeds, or false if the purchase fails. If the product has been registered as consumable, the purchase is consumed before this call returns.

iap.register(product, identifier=None, amazon=None, google=None, ios=None, consumable=False) link

Registers a product with the in-app purchase system.

product
A string giving the high-level name of the product. This is the string that will be passed to iap.purchase(), iap.Purchase(), and iap.has_purchased() to represent this product.
identifier

A string that's used to identify the product internally. Once used to represent a product, this must never change. These strings are generally of the form "com.domain.game.product".

If None, defaults to product.

amazon
A string that identifies the product in the Amazon app store. If not given, defaults to identifier.
google
A string that identifies the product in the Google Play store. If not given, defaults to identifier.
ios
A string that identifies the product in the Apple App store for iOS. If not given, defaults to identifier.
consumable
True if this is a consumable purchase. Right now, consumable purchases are only supported on iOS.
iap.restore(interact=True) link

Contacts the app store and restores any missing purchases.

interact
If True, renpy.pause will be called while waiting for the app store to respond.

IAP Actions link

iap.Purchase(product, success=None) link

An action that attempts the purchase of product. This action is sensitive if and only if the product is purchasable (a store is enabled, and the product has not already been purchased.)

success
If not None, this is an action or list of actions that are run when the purchase succeeds.
iap.Restore() link

An Action that contacts the app store and restores any missing purchases.