Assistive Touch

If you have a stylus for your iOS device, then you should try AssistiveTouch. Assuming your are part of the 99% of the users using iOS (you run iOS 5 or later), you can use AssistiveTouch, which is part of iOS. Just go to Settings > General > Accesibility > AssitiveTouch > and turn it on. An icon will appear in the bottom right corner by default. Drag it around to change its location. Tap on it to get some helpful tools, such as multiple "digital styluses". You'll see what I mean with the picture below. 

This is available from tapping on AssistiveTouch > Device > More > Gestures.