Used to be very nice, but back up your lists... – Ita — A List-Making App Review

Until it's fixed, this looks good but is frustrating on iOS 9 & iOS 10. It often drops input while you're in the middle of typing. Which is sad, because I like it a lot otherwise. A search function would be nice, but I feel that this app has been abandoned. This may not be the fanciest list management software, but it is extremely simple to use and provides the basics. It's fairly intuitive, and definitely easy to learn. I find it useful for a number of tasks, including grocery lists, books I wish to purchase, movies I am considering renting, etc. There are probably apps for each of these which are more focused, but I prefer having a single place to go and not having to learn new commands or gestures for each. There is no advertising, which is important to me. However, I've had at least two updates of this software erase all of my lists. (In one case, I was able to recover them using a tool to browse the iPhone filesystem.) Perhaps there is an iCloud bug involved — I don't know, one way or the other — but I am hesitant to trust the application across updates at this point. In a recent instance, I updated the app on my iPhone and it showed no lists. Luckily, the un-updated app on my iPad still showed all of them (and the developers promptly pulled the buggy update and released a fix shortly thereafter). Before you update, and probably periodically, use the Share function to back up your lists!
Review by Anton Rang on Ita — A List-Making App.