I made this up myself. With this routine, 1 inch in 4 months is 100%. I also want to believe that a daily usage of the penilmasterpro for 6 hours combined with 1 hour daily session with the LengthMaster will bring 1 inch gain in 4 to 5 months too. I don't think there are users here that have combined bundled stretches and penilmasterpro for a period of 4 months consistently.