A free app for Android, by One Enger.
If you want to remember important things, use the best reminder app - My Day.
It has a simple and intuitive interface.
Just open it and set the time.
Now, whenever you want to remember something, you can open the app and press "Schedule".
If you want to add a note, you can also do this.
You can change the color of the note to make it more expressive and noticeable.
My Day has a widget for the launcher that will show you the agenda.
It allows you to add the things you need to do today, or for the future.