I am so happy with Erpkite. I looked at a lot of other practice tests, but this one was by far the best. The questions were challenging and the interface was very intuitive. I think this is the only thing you need to study for your SAP certification exam and it will help a lot! I am working through the sap certification and Erpkite really helped me out. I was struggling to find a good practice test that I could take offline, but Erpkite offered everything I needed! The quizzes are challenging and the explanations are thorough.