Default Offline Calendar and contacts

Searching for the Play store for some time and couldn't find the solution.

I want my phone to be a phone again and not a tracking device for Google, Facebook, NSA and whoever.

This means I installed CM 11 on my i9500 (Samsung Galaxy S4).
I want to use Calendar and Contacts, but only offline. The information must be written to the (Ext)SD-card.
Who can advise me to select the best app?