Maybe you have a hint for an really really simple easy music programm? i dont know anything i even cant play any music machine.
Are you on iPhone/iPod or an iPad? All of the above listed apps shouldn't be too difficult to work with - FL Studio does have that nice & easy step sequencer though. Unless you're going to record all the bits live, you will want to familiarize yourself with the "piano roll" interface most music apps use. Play with these basic sequencers (both free) Melodica TonePad ...and Music Studio might not suit your needs for House music, but is the same engine as FL Studio, so you should try it: it has a free Lite Version. If you need more impressions of music apps, hit the search button and type in "apps for musicians" there's lots of good stuff in there.
Try Groovemaker, its more song mixing than producing but you can be satisfied quite fast. And it has lite editions.
GarageBand has some really nice synth patches in it, and they are all real synthesis and not based on samples like a lot of apps in the store. Also has some good drum kits. if you want something that is really great but more general purpose, go with GarageBand. It has no step sequencer or piano roll, though. but out of pretty much every music app available, GarageBand is probably the easiest one to use in the AppStore. the good thing is you have a lot of options.
Pro Tools. Unless you really think you're going to be super cool by making music on your iwhatever, just get Pro Tools for your computer. FL Studio/Garageband are for no0bs. But Thump is good for house.
Oh snap, I thought he meant iOS? If you're talking PC/Mac, Pick up Reason. Later, get Cubase to host your VSTs. Or if you're cheap, pick up any copy of Computer Music and use their sequencer/VSTs.
Last time I checked FL Studio isn't for iOS. Reason is alright, I am a lot more fond of Native Instrument's products. The Mouth, Massive, Razor, and Guitar Rig. :love and Pro Tools. Forever and ever.
I don't about house music specifically but I have tried in order GarageBand (Mac, a few finished tracks), FL Studio (PC, no finished tracks), and FL Studio Mobile (iPhone, several finished tracks). FL Mobile is all I use now. FL Studio (desktop) was harder for me to learn than the other two.
You should try NanoStudio. It's more complex than GarageBand (which I recommend over Fruity Loops), but it's made from a smaller company and they really need the support The features in GarageBand is more streamlined, and you'll be able to make some songs easier (especially if simulating real instruments like basses, guitars...) for eletronic instruments, go for NanoStudio!
If you don't know anything about music yet, it's best to start with Freeware for a few months before buying a big expensive box of software. Garageband is a good choice for this IMO.