3. Paper by FiftyThree for iPhone and iPad
The paper is not a dedicated design app, but still much more than what a designer can ever think of. It gives you a paper tableau on your smart devices. Simple. Make notes, draw sketches, create lists. Do anything and everything.
With its extensive functionality, it also matches up with the speed of your fingers; therefore, you can put anything down that inspires you on this paper.
To effectively utilize this app for optimal output, you can use any of the available tools like FiftyThree Pencil, Pogo Connect Smart Pen, and Just Mobile AluPen.
Get Paper for iPhone and iPad.
Paper by FiftyThree offers dynamic color ranges supporting various digital pens for sketching to perfection.