To begin the installation, click this link or open the App Store on your iOS device and search for "Grammarly Keyboard."
Then, click Install next to the Grammarly Keyboard listing and download the app on your device.
Once the app is downloaded and installed, click Get Started. If you already have a Grammarly account, tap Log in to existing account and enter your login credentials. If not－tap Continue with email to create an account.
Note: If you used Google, Apple or Facebook to create your Grammarly account or you need to create a new account using those options, tap the corresponding option. If you already have an account, but would like to set a password, please request a password reset email at https://www.grammarly.com/resetpassword.
Next, follow the on-screen instructions to set up the keyboard.
If you don’t see a green Grammarly logo in the top left corner of your keyboard after following the instructions, tap on the globe icon.
Note: If you are an iPad user, check this article for more information on Grammarly for iPad.