The upcoming Apple tablet computer could have a downside for app developers, Forbes says. The problem? Inconsistency in term of developing app –especially related to the screen size and resolution of these devices.

Apple rolls out a tablet computer, it could make building applications for its portable devices more complex. That’s because developers–who have built more than 65,000 applications for the iPhone and iPod touch–say one of the big advantages to developing apps for these devices is consistency.