The writing pad app I find myself using and relying upon over and over is Notes Plus.
This app captures handwriting in a fluid and natural way. You can learn more here.
It has shape recognition, audio recording, the ability to have multiple notepads, you can insert text with different type styles, use the close up window that moves automatically as you write and more.
Although the window moves, you do need to get used to it. But, once you do, it is has a fairly fluid feel.
For $1.99 on sale, if you’ve been looking for a note taking app, I don’t think you can go wrong.