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

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

I stopped using an extra app for private conversations. Instead I use my iPhone's Notes app. Here's how it works.

It's easy to draw on your iPhone with the Markup tool in your Photos or Notes app. Here's what you need to know to do it.