Hi ansimuz. Interesting tool. One suggestion I have for mobile devices. Since the app runs full screen, when you put focus on the input field, my phone's keyboard covers up the input field, and it's nice if you can see what you have typed in, especially if you need to delete something.
My suggestion is to move the input field to the top, at least for mobile devices, and probably anything with an onscreen keyboard, tbh. Probably simpler to just relocate the field to the top for everything, though.