Imagine needing to write something in a hurry. Well, if you have a Galaxy Note, you can just pull out the S Pen and scribble on the lock screen. And well, you can do that on the iPhone and iPad ...

Unlock the full potential of your iPad calculator app with our beginner's guide on how to use math notes on iPad. See how it can automatically calculate math equations and show results as you write.

You might yearn to pick up your iPad and scrawl some notes on its surface, but until recently you had few good options for doing so.

If you've ever wanted to create a new note in the Apple Notes app almost instantly, your iPad can do that — with the help of an Apple Pencil. Here's how.

I'm an iPad owner overwhelmed by apps. Where should I start if I'm looking for something with which to take notes?

This makes it so you can create a note, and then send it straight to an ever growing "Journal.txt" file on Dropbox. Drafts is available for $1.99 for iPhone and $2.99 for iPad in the iTunes App Store.