Creating a Runchat account is free and will allow you to create and publish apps, link external services like OpenRouter for language models or Google Sheets, and access a 14 day trial of Runchat Pro.

To create an account, visit https://runchat.app and click Sign Up.

You can sign in using your Google account, or by entering an email and password and clicking Create Account. Check your email for a confirmation link and use that to sign in. If this is a new account, your free 14 day trial of Runchat Pro will start straight away. See here for a comparison of features between Runchat Free and Pro plans.