What pens can i use with rocketbook

All you have to do is use a Sharpie or other permanent marker. Then write on the template with a Frixion pen. You'll be able to erase the Frixion and leave the template behind.

Rocketbook and Elfinbook both work with Pilot FriXion pens. When the very first smart notebooks concerned market, I wouldn't have recommended them to anybody (List Of Compatible Pens For Rocketbook).