Macbook for development: £1000
iPhone SDK developers license: £50
iPod for field testing: £230
4 years programming education: £You don't wanna know...
Everyone wanting you to make make them a game... priceless :P
Only kidding! I'd be happy to help if I can find the time!
When you say 'advanced features,' what do you mean? 'Teach colours?' How?
I could write a basic teaching tool for colours, but what do you ACTUALLY want it to do? Your description isn't very clear.
The iPhone development industry is now flooded with useless apps and wanna be programmers since schools and other developers are now allowed to talk about programming and methods with eachother. If you have a solid idea, I suggest you do not post it on a forum and take it offline after possible programmers who have done work in the past sign a NDA to keep your idea yours.
Anyone now can come see this and write an app just like this and you are SOL.