Use iPhone's Notes app collaborative feature to send private messages that look like regular note-taking to anyone watching your screen.

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.

And the best thing about the iPhone Notes app is that there are companion Notes apps on the Mac and iPad – and your notes are synced across all of them. That means that you can begin taking a note on ...

To use graphs, open Math Notes in the Calculator app. Type out an equation with only two undefined variables, with one on either side of the "=" (equal to) sign.

Create private chat rooms using the iPhone Notes app collaboration feature with instant messaging capabilities and full control over conversation privacy.

The Notes app can be super helpful, if you use it correctly. Credit: Mashable What did we do before the Notes app on our iPhones? How did we make grocery lists?

Open the app where the file is saved, tap and hold, and move your finger a bit to pick it up. Using the other hand, open the Notes app and navigate to the note in question.

Create and use templates in Apple Notes with our comprehensive guide. Enhance your note-taking efficiency by customizing and reusing templates for various tasks, from meeting notes to daily planners.

Aside from the Notes app, you can also copy the cutout to other native Apple apps, such as Messages, Mail, or AirDrop. If your iPhone doesn't have this feature, you can still proceed with making ...