1 point here for PAT (Pilot Aptitude Test) and SkyTest!
Has a lot of errors at maths..
I was trying for 10 minutes to figure out what my mistake was until I realized that it calculates 5x8=45 and stuff like that.
@AntonioGR: I found the same and emailed them. Turns out that the approximations they use are actually representative of what you'll find in a pilot aptitude test. i.e. If you need to calculate a complex worded question that, in some part, includes 5 x 8, the end result may not be 40 but rather 42.1 etc. Apparently, and I can attest to this, this tends to be the case with multiple choice aptitude tests, to catch you off-guard.
LPJ is alright for a brief overview for what's to come which is great if you're full of bundles of confidence, but I found that the 24 maths questions that they provide aren't up to scratch because there are so few of them. I don't think revising with just 24 questions is feasible.
The basic aptitude tests that they provide are a bunch of images moving around on a computer screen and don't seem to do much except infringe copyright.
My advice:
Be wary of an over-reliance of these 'aptitude tests' that try to mimic the real thing - you should instead try to improve the skills they're looking for, rather than trying to memorise an aptitude test as it will not serve you any benefit in the long run.
The tips that are provided for interview practice can all be found in Google Search - save your money and buy a book like Mental Math for Pilots to improve your mental arithmetic skills.
That 'Interview Gouge' that is updated 'regularly' is about as useful as a chocolate teapot too, with a bunch of messages from wannabe pilots shooting the breeze - I'd recommend taking that with a huge pinch of salt.
Pilot Aptitude Test and SkyTest are in a different league. Both of them have huge question databases for the relevant content with hundreds of questions, and have plenty of aptitude tests to practice with (around 15-20 each I think?).
Pilot Aptitude Test, at the very least, has the Knowledgebase Articles, which are free and would be my first port of call:
Knowledgebase | PilotAptitudeTest.com ? The No.1 Online Preparation Software
They also both provide feedback in a way that LPJ doesn't - and explain the quickest way to answer the questions and explain how.
TL;DR:
Passed numerous aptitude tests and in my experience, Pilot Aptitude Test.com was much more useful than LPJ but be wary of an over-reliance on these types of software.
You're all very welcome to shoot me a private message should you have any questions on aptitude tests - my head is saturated with them and I'd be happy to pass that information on!