In-app purchases are a common technique used by most apps and games that allow users to buy additional content or services within the app, such as paid versions, paid feature unlocks, special items ...

Smartphone users are familiar with the principle: an app is free to download, but if you want to use the full range of features or avoid seeing ads, you need to pay through in-app purchases. These ...

In-app purchases are inescapable. An app might be free to download, but more likely than not, a pop-up will immediately inform you the best features are locked behind a monthly fee or an annual ...