I have noticed with my DD that she prefers working on a mac to a written paper, I know the test will be written but I'm trying to find a way to up her speed. Can anyone recommend any mac compatible tests, ideally that are free?

There are at least two sets of specific 11+ apps for ipad/tablets etc. One set on this website and another set which I vaguely remember were easy to search for on AppStore. I think they're a few pounds each, which I think is good value considering the price of an average Bond book! This website also has other software for sale but I can't give an opinion on it as we haven't tried it.
There are quite a few free or cheap app 'games' for maths and vocab that could be a more fun way to practice?

Also - some websites we've used are

http://freerice.com
https://www.vocabulary.com
https://www.mathsisfun.com
http://arithmetic.zetamac.com/game?key=ddcb585f

Thank you Candel, we are so late to this process, that I really appreciate any help; as I feel swamped by everything I need to look at. My friend and I are going to get our daughters to sit practice exams every few days, to try and get their speeds up as well