Oh, so you're saying it is Evernote that didn't add the count code, that makes sense, I thought you meant Android hasn't shown reminders.
I would have thought it was relatively simple as the language is there already isn't it?, certainly internally the labeling to trigger an event is i.e. "reminderOrder", "reminderTime", and "reminderDoneTime": and if you just used reminderOrder:* for instance as a query and get Evernote to post that total as a number on the badge..then Whamo! problem solved.
Clear as mud