Is the app free? Robyn March 21, 2018 16:08 Updated Follow Yes! To sign-up for the Grobo web app, please visit: my.grobo.io You are able to login to the app from any computer, tablet or phone that has an internet connection. Related articles When will my Grobo order ship? There is no recipe for the seeds I have Is there a payment plan? The app won't allow to me fill and drain How do I harvest cannabis? Comments 0 comments Please sign in to leave a comment.