Want to keep track of all the things to do in the life with all the things to not be able to forget, then this app is for you only and you are on the same app page. My app always save all the things you need to remember after you enter it in the app. There is an add button. By clicking it, you will get the fill form for the title and a short description as well as select priority of the thing you need to remember. And if by mistake you have opened the page, then you can both delete the entry or also can go back. All the todos are saved in mobile storage so it does not require internet.
Note: Never click on the save button when the entry form are empty.
All the data is saved securely and no one can hack it. And the main feature is that you can add as much todos a you want and also there are no ads at free cost.