
This benefits Google, as any purchase made under the Play Store billing system is subject to a 15 percent fee. Like the Apple App Store, the Google Play Store requires apps to use its own billing system to accept in-app payments.

Users are no longer able to make purchases on the Kindle app for Android as of June 2022, a date that coincided with a deadline for compliance with Google's updated Play Store guidelines. Related: How To Delete Books From Your Amazon Kindle (And When You Should) Kindle Unlimited subscribers have access to over two million e-book titles with a continued subscription plan that costs $9.99 per month, and any new payments will have to be made on a browser, either using a mobile device or a desktop. The new purchase restriction also applies to Kindle Unlimited subscriptions, which can no longer be paid for within the Android app.
