Uncomplicated, like using pencil and paper

Being able to review your input is valuable when checking calculations. I can do that with this app.

Clean and uncluttered.
Copy paste calculations save time and improve accuracy.

I would like to see a few additions,
Numbered pages or an index for the saved pages, bookmarks, swiping is time consuming.

Some method to delete past pages.

Thanks

JDRAKEW about Calculus doodlus