Hello,
I wanted to ask, if there is a Way how I can test my iphone apps on my Iphone without beeing Iphone Developer, because I dont want to pay money for a Membership(Later after I finished developing my first professional App I would like to get a Membershhip, but for now, is there a hack?). Ive got a Macbook with Mac OS X 10.6.8 and a jailbreaked Iphone 4S.

Thank you

There is no official way to do this. That's part of what you get when you pay your money for a membership.

(Maybe there's a jailbreak way, I dunno.)

Are these web apps or regular apps.
If you have a jailbroken iPhone you can or just use the simulator.

Web apps wil obviously be no problem. As for regular apps, there is no official way of doing this without a developer account. Maybe an app development company could help you test out your app while also ironing out any issues in it (?)