Download the free app
There's a $2 coupon you can print from the website for RTF formula. You just have to login or register.
https://www.gerber.com/AllStages/login/default.aspx?cpnoffercode=94902&source=10335618&utm_source=Gerber&utm_medium=email&utm_content=Promotion&utm_campaign=ReadyToFeed
Re: If you use GoodStart...