Needs further development
Unfortunately development investment seems to have dried up. There are plenty of new things they could add. Top of my list would be an Undo button for those times when my clumsy finger checks something off the list by accident and I don’t know what it was. Second would be storing the list in iCloud so I can access it from iPad or iPhone, whichever is closer.
Response from developer
Absolutely! We're working on it.