I've used all of the popular and some of the lesser known To Do List apps. This is by far my favorite. You don't have to have an account and has more options. But you should for back up purposes. The only problem I have is that when I miss a task, it says due 10 minutes ago when it's been 2 hours. My tasks do show up on time though. The times vary, but this issue started when I created an account.