solution to 1-4:

Originally you where suppose to lower the platforms and jump over the platform with the spikes picking up the star in mid air. However, on the last minute I changed some things in the spike collision code… it worked good on all the other levels but apparently it is now impossible to finish this level in the original intended way.
Luckily there’s another easy way :

• Pick up the stars at the right side of the screen. This shouldn’t be too hard.
• Make sure the platforms are back in their original state.
• Then jump back to the left side of the screen. And make sure the koala stands on the right side of the fruit (but look out you don’t place him too far to
  the right otherwise you might hit The spikes when you lower the platforms.
• Lower the platforms with 1-9.
• Now jump to the right, when you hit the star immediately steer left and you will land safely on the fruit.

Yup that's pretty much what I did!

Yeah, I had to glitch my way to the last star too. Good to know that it wasn't my fault I couldn't beat it correctly, lol. And Hugo, I'd love if you read my review of the game so you can see how much I loved it! I sent the link to you on Twitter a while back, but you don't seem to be very active on there lately, so I've put it at the bottom of my signature if you're interested.

Ace Mathician was a fantastic way to end the Goodbye Galaxy Games DSiWare Trilogy (that's what I'm calling it), and be sure to let us Nintendo fans know someday when you've made a game for the Vita--I hope to have one by then partially so I can keep following your work!

@DarK Oddy: Thanks for the nice review! just read it

Sorry about twitter.. I'm extremely busy with work and I have some weird bugs with twitter (I seem to get messages from everybody that slightly resembles
my username; so I get email for HugoSmits, HugoSmits_040, HugoSmits88,etc) so I turned off all email and notifications that why I probably missed your
message!

I just finished this game today. It wasn't a bad value for 200 points, but it was a little disappointing. Mostly because it was way TOO short... just as the game starts to get interesting it ends. Then I finished all the levels with all stars and... nothing happened. But more so than the length, I think what I found disappointing was that it was too easy. Each level only having four numbers and symbols to choose from drastically limits what you can do with your platforms, and on some levels you don't even need all of your numbers/symbols. I didn't even use one of the equations on the last level. So... other than those complains, I can appreciate that HugoSmits made this game by himself, I love the graphics and music, and I really do think it's an intriguing idea. I just wish there was more of it.

@kurtasbestos

I understand your complaints with the game. The game engine supports the most complex math formulas you can imagine. However, I only support 4 symbols because most players only have some basic math skills (see the news section about Ace on this website, look at the comments how many people worriedly ask if ‘you need math skills’ for this).

On top of this; I wanted this also to be fun for kids. With only 4 symbols it is easy to guess the answers (only so many possibilities) so I knew for sure players wouldn’t get stuck.

If I ever get to make Ace 2, I would probably make a hard mode. Which you can unlock after the normal mode and it will feature up to 8 symbols or something like that to make it more challenging.

Ace Mathician 2 would look great in 3D hint hint

I know! hint hint