How many devices can I add to my Cookidoo® account? You can register up to five devices with your Cookidoo® account, e.g. three Cook-Keys® and two TM6 appliances. Related articles How do I find over 41,000+ recipes on Cookidoo®? IMPORTANT Steps for Setting up Your TM6™. How many recipes/times can I cook with my TM6 once my Cookidoo® membership expires? Do I need to be registered with Cookidoo® in order to use the TM6? Where can I get the Cookidoo® app, and what features does it have?