Does anyone know of a notes taking app (under $5) where I can draw with pens and text on the same page, and have multiple pages of notes per file? Like if I were to take notes for a math class, I could draw figures, add text, and have multiple pages of that all in a file called "Lesson 2.3" etc. Preferably that I can save the lessons offline. Other apps I've found, they require an account and upload the instant I save them, and I have to record them. I don't want that.