Is it guaranteed that it won’t take more money off my account?
Here, you will find more info on the payment system.
There are more than 200,000 apps on Google Play, while on the App Store 33% of the apps offer in-app-purchases. Altogether on both, there have been more than 130 billion downloads of which there has NEVER BEEN an occurrence of more money being taken from our account than the listed price.
It’s in Google’s and Apple’s interest that you visit them again, and so you can be rest assured they won’t abuse your trust.
They protect user data and the purchase procedure with an INCREDIBLY STRINGENT system, so you don’t have to worry about any abuse of your data.