First off, I just want to say – overall, I think this app is quite nice.
I see from searching that this has been mentioned before (though perhaps not recently?), but I just wanted to reiterate it: It would _really_ be a nice enhancement to allow configuration of the Toolbar. As it stands, the toolbar items are too small and not in an order I find intuitive. And there are several I do not use and would remove if I could. (For my own taste, I would prefer just icons without the text, too; but that may just be me).
Another idea: In calendar Month View, swipe left to go back one month / right to go forward one month (in other words, swipe left/right duplicates the function of the < and > arrows).
Thanks again for a nice app.