True Retention by Card Maturity
As add-ons are programs downloaded from the internet, they are potentially malicious. You should only download add-ons you trust.
To download this add-on, please copy and paste the following code into Anki 2.1:
If you were linked to this page from the internet, please open Anki on your computer, go to the Tools menu and then Add-ons>Browse & Install to paste in the code.
This add-on previously supported Anki 2.0. You can download the last version supporting 2.0 here. As Anki 2.0 has been discontinued, no support is available for this version.
All Anki 2.1.x Add-Ons
Something I didn't know and would suggest be added to this add-on's description:
NOTE: In modern versions of anki (2.1.33 and newer), you ***MUST*** open the Stats window by shift-clicking in order to view addon-based stats information. If you do not hold shift, a different stats window will appear where addon-based stats ***do not display***. This behavior is ***covered in Anki's documention***.