Do apps of the likes of Lucky Patcher ring a bell? Well, you're going to find something similar in this Hack App Data, an Android application capable of modifying the data of other apps.
Modify any app with this tool
We'll find our phone's applications sorted into system apps and user apps. We'll have to be careful with the first ones as they can affect critical Android aspects (we'll also find the so-called bloatware here, basically pre-installed applications).
Amongst its different functions, it offers us an option to generate backups of an application. In other words, if we modify that app and we want to save those changes, we can by generating an APK file.
However, we have to warn you that to be able to carry out any modification to the applications, we need to have root or superuser permissions on our smartphone. That's because accessing certain information generated by the functioning of the apps can only be accessed by the operating system.