Send secret messages on your iPhone using the built-in Notes app. Share and collaborate on notes for private, real-time chats—no extra apps or tools required.

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

Learn how to export iPhone Notes to Markdown in iOS 26. Save time, preserve formatting, and streamline your workflow with this new feature.

The Notes app on iPhone can serve as an unconventional secret messaging tool, allowing users to engage in private conversations without needing additional apps or complicated passwords.

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