I’ve just released To-Do Today 2.1. To-Do Today is a free Android daily tasks list with categories that doesn’t require an account and will keep the data on your mobile phone.
https://play.google.com/store/apps/details?id=com.japplis.todotoday
What’s new with release 2.1: graph of progress in tasks in the last week / month / 3 months, share a day and bug fixes.