1. Go ahead and set max iterations to 4096. A lot of the good stuff is not there at the default of 256, and I’ll probably just make 4096 the default in future releases. If you find it slow: just navigate to a less-complex region.
2. Screenshots – for now just press the home and power buttons to use the device’s built-in screenshot function.
3. Ads – I’ll probably provide a method to disable these via in-app purchase in future. If they really annoy you just turn off the network, and no ads will load.