Pocket Wifi Rental for 6 weeks stay in Japan (Tokyo)

Hi all!: I hope I can get advice or recommendations for renting a Pocket Wifi for my 6 weeks stay in Japan. I want to stay connected with my iphone (Chilean number) and also Macbook pro, I´ll be staying the most part of my trip in Hiroshima, but also will go to Kyoto and Tokyo, so I thought the option of a system that let´s me stay connected moving around was the best. In your experience is the best system to use? Wich companies would you recommend, and how much is it approximately?
Thanks in advance!

Andrea Miyuki