The EASA PPL Tutor allows you to revise for and practice all nine ground school exams needed to obtain your private pilot's license.
Extensive revision material is provided either for brushing up before taking a practice exam, or looking up information on incorrect answers.
Revision content for Air Law is provided for free and, once you've discovered how helpful PPL Tutor is, you can make a one-off payment to unlock the rest of the subjects.
Useful information, there isn't much talk of this exam online. Your android App doesn't seem to have any mention of this exam, I only see the 9 theory exams.