Grammarly's feature that can identify the tone of your message is now available on iOS and Android, giving you a better sense of how you're coming across before you hit Send.

Grammarly’s Tone Detector Goes Mobile

With today's announcement on the Grammarly blog, the Tone Detector feature is now available via the Grammarly keyboard in any app on iOS and Android that accepts text.

Just switch to Grammarly's software keyboard when composing a message on your iPhone or Android smartphone to see how your writing may sound to the recipient.

Tone Detection requires at least 150 characters to work. It uses machine learning, taking into account many other signals and grammar rules to analyze the tone of your writing.

The company explains:

Grammarly’s tone detector works by analyzing a combination of signals in your writing, including capitalization, punctuation, word choice, and more. For this reason, your message will need to be at least 150 characters long for the tone detector to activate.

Related: The Best Grammar and Punctuation Sites

Before you can use this feature, be sure that you're running the latest available version of the Grammarly app by visiting its product page in Apple's App Store or Google's Play Store.

The same feature has been available in Grammarly's web app for some time now.

How to Enable Grammarly’s Tone Detector

With the updated app installed on your iOS or Android device, open Grammarly and choose Keyboard Settings within the app, then toggle on the switch labeled Tone Detection.

That's it, you can now type in any app as your normally would.

Before sending the message, switch to the Grammarly keyboard and hit the G icon. You'll instantly see the tone of your writing ("confident", "worried", etc.), giving you the opportunity to adjust what you wrote if it’s not coming across quite right.