[ay]

The double-click menu is a bit non-intuitive, but I think the issue stems more from the perceptual "flakiness" in its detection.

Also, rather than showing a modal dialog once/doing it "under the paper", I'd track an incomplete save to camera action (incomplete swipe/swipe in progress) (btw, awesome abstraction with the full swipe!) and showing the 100->0->100% alpha transition hint "doubleclick the = area for sharing options".

Other than that little glitch this is an _awesome_ app with no extra bells and whistles. Totally keeping it for my napkin sketches!

[mcfrl]

Thanks a lot. I do consider pull to save the primary action. Double tap or shake gives you the menu, but I agree this can be simpler. It would pain me to put instructions in the app though...

[ay]

++ on the pull. What could help though is to display something transient-ish while you are "flipping the page" (to not present the direct modal choice, but to give a hint there's more). I am a relative noob in iOS coding, so not sure how easy it is.

The "real" problem that I perceived is the double-tap, and I have debugged my interaction a bit more.

What it looks like is that the triple-equal sign is a bit too small for my fat fingers. OTOH you do not want to waste the drawing space too much...

My thought would be: take a rectangle of 2x size the current triple-equal sign action area, then try to both use the drawing mechanism there, as well as to track the doubleclick-like events there - and if one happens, then undo the last drawing event (which was a part of the click, anyway).

I think this should make it easier for fatfingered people to deal with it :) And the translucent advertisement upon the swipe should take care of education, I think.

[mcfrl]

Thanks for offering solutions. It can be improved I agree. We had thought about some one off instructions like this and perhaps that's something we'll think about.