There is also an ad-free paid version called "Electronic Signature PRO". Please go from the link in the app.

【function】
- Selection of color
- Thickness of pen
- Line design
- Selection of pen and eraser
- Undo, Redo
- Scale display
- Save as image
- Copy to clipboard
※ tick marks are not displayed on the saved and copied ones.


Please contact the review section or DM here.
https://twitter.com/corasck


【Disclaimer】
This application does not assume any responsibility whatsoever caused by using this application.