電話app, abrsm aural, grade1-8 is very good for preparation of the aural exam. Besides, it is very user friendly and practical. At least, I can practise sight singing and cadence hearing well.
I really feel that my dream comes true when I receive the Grade 8 result. I still remember how much effort I put in learning piano and it is worth about it.
You can go to the website of ABRSM and download the syllabus. You can compare the syllabus to see if they are the same. I think that it should be the same. But if you will take the exam in HK, you are better to buy it in HK because some examiners may be aware of the difference and have bad image on the candiate.