For some strange reason, you cannot use Tab/Shift-Tab as shortkeys to increase/decrease indent for checkbox lists - it only works for bulleted lists. Why? Instead, you have to use the mouse/pad to go to the Format menu, choose Lists and there click Increase/Decrease indent - very time consuming.
More generally speaking, the checkbox list feature is presently not very well made: the actual checkboxes act more like merely inserted symbols rather than a "real" list - making editing an existing checkbox list quite a hazzle on both Mac and iPhone: you often end up with double checkboxes on one line, text left of the checkbox, etc. Again, this works perfect for bulleted lists.
For someone like me who uses checkbox lists all the time, it would mean the world if this could be improved.
Thank you for an otherwise great app!