Hello everyone
I passed few days ago the exam (2nd try).
I want to share with you my experience with this exam.
At first try I used to prepare myself these:
1/ PMI-ACP® Exam Prep by Mike Griffiths (second edition)
2/ RMC Agile Fastrack2 simulator
This simulator, despite of RMC manufactured it and the price that is high enough, isn't good for this exam. The questions are too easy and generally not situational. So I don't recommend it at all. Because of it, I didn't passed the exam. For me it was a shock when I saw the questions of exam

At the second try I used more 2 materials and I removed RMC Agile Fastrack2 simulator:
1/ PMI-ACP® Exam Prep by Mike Griffiths (UPDATED second edition). I have to mention that the UPDATED version is almost the same with previous (few minor modifications). So it isn't worth it.
2/ PMI-ACP® Workbook by Mike Griffiths. It is a great study material and the Quiz is with good questions, situational.
3/ PM Prep Cast simulator for PMI-ACP. This indeed is very good. But I noticed some questions that are not aligned with PMI-ACP® Exam Prep by Mike Griffiths. For example: MVP=MMF and it isn't any mention of MMP (minimal marketable product) in official book, PMI-ACP® Exam Prep. Instead in PM Prep Cast simulator is at least a question where MVP, MMF and MMP have 3 different definitions.
Hope it helps