Nice application :) I appreciate the effort to make it inclusive to every platform.

I've tried the web-app version from desktop and I feel that the UI is suited for mobile-view. UI-wise some icons are probably better accompanied with what it meant (e.g. the "lock" icon) and some hint whether it is clickable or not (only when I accidentally click it, I realized it is clickable).

And the slogan "make plans, without a plan" seemed off for me, someone still need to make a plan, at least a partial plan.

And by the way, why should I "register" to the app by providing an e-mail address, if I could share the link myself?

Thanks, and have a nice day :)