Tapas - Tapas – Comic, Novel and Stories is free to use digital comic application by Tapas Media that puts tens of thousands of comics and web novel on your mobile device.
Breathing Halftone - Images go whoa with lots of floaty dots
GlobalComix - Professional Comics Publishing
Headspace - Meditation made simple. Brilliant things happen in calm minds.
Comixology Unlimited - Netflix for comics and graphics novels by Amazon
HalftonePro - Create custom vector halftones quickly and easily