Margin note 4

Hi all, I am long time mn3 user. I had upgraded to margin note 4 from 3 but it seems like I can see only one mind map in 4. Experience for mind mapping seems very difficult. Also mind map is not ordered by chapters. What is there is max vs pro. Also what is the cost of upgrade to 4? I get option for 38$ for iPad see 19$ for Mac.

From user to user: MN4 is great, just get Max. Some things are in different places, so you’ll need to go through the translated documentation site to discover everything.

Thank you is it the 38$ option ?