Sketch Notes lets you jot down ideas, sketch ideas or note down anything else you would with your paper notebook.
Choose from grid, lined or blank backgrounds. The nice grid background helps sketching accurately and to scale.
Export/share your sketches.
Works especially well with a traditional stylus and resistive touchscreen tablets, as well as with your finger on capacitive screen tablets and phones.
SketchNotes is open source under the GPL licemse: https://github.com/maks/Sketch-Notes/
Contributions, especially translations are welcome, as well as bug reports, just open a new issue on the Github repo.
Please send feedback and comments to: firstname.lastname@example.org