I was studying & preparing for the IASSC ICGB exam since Aug 2019. Actually I did not find any difficulties comprehending the subject. Nevertheless, the exam language was tough & confusing. So after I failed the test on the 1st time, I searched for a good exam simulator & this is by far the best I've got.
Thanks to this exam simulator, I passed the exam in the 2nd attempt with high grade.
I would definitely recommend it & I will come again for IASSC ICGB.