ABRSM puts out two books with CDs for each grade with examples (Aural Training in practice, and Specimen Aural tests). They also have an App, but I haven't found that to be any more useful than the book, as I think the examples are pretty much the same.
There are also several other series with CDs - Aural time (Turnbull), Improve your Aural (Harris), SoundWise (Spragg) and Aural Tests (Perkins). Not all versions come with CDs, so you have to search for it.
Hofnote is OK, limited to about 50 examples per test per grade, so I found it very easy to recognise having had a specific example before. They also didn't follow the restrictions on the tests for each grade perfectly (e.g., for Gr5 melody repetition, sometimes there would be accidentals in the pattern, or it didn't start on a triad note). But it had some good things about it, and you could practice a lot. It has an App where you can access your account on your phone, but it's the same as on the computer.
there are a few more examples on e-aural trainer
and on eMusic Maestro Some are free and some you have to pay a little for, but not too much.
this one only goes up to Gr5, but might have some useful practice (also other resources on the site that could be useful) music teacher resources
Not specifically AB, but just general aural training: lots of games here Theta music trainer and some are similar to the things you have to do on the AB exam. some are free and some are subscription only to get to the higher levels.
I have done all of these. And I'm still bad at it. So this might not be the best recommendation list, but most people seem to get the hang of it by using these resources! I'm only trying to do gr5, dreading what is to come.