I have just installed it and really loved how simple it is.
Two things that I love the most are
- Gives you a .board file which you can carry anywhere. By default, it saves it in iCould.
- Tabs for opening multiple boards at a time.
Thanks for your feedback! I tried to design the .board file format in a future compatible way. It's just HTML embedded in a ZIP file. Make a copy of one of your boards and change the file extension to .zip to take a closer look. The HTML doesn't render the same as a board yet (it's copy & paste ready), but you'll get the idea.