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Ease Factor Histogram

<10kB. Updated 2017-08-26. Supports both Anki 2.0.x and 2.1.x.


Ease Factor Histogram: an Anki addon appends a histogram of Ease Factor on the stats screen. Note: This add-on works with both Anki 2.0 and Anki 2.1 (after Beta 13). This addon shows you an histogram of Ease Factor of your cards on the stats screen. Ease Factor is an index from the evaluation history in reviews to decide the next interval. This histogram shows how easy to learn the deck is, or how much right questions on cards you made. Easy deck Hard deck 日本語ガイド Ease Factor Histogram 単語帳の健全性を診断するアドオンでは、このアドオンで表示するデータの使い方について解説しています。


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 the desktop program:


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.

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on 1546700311
Agree with others - this should be in vanilla Anki. Simple with useful functionality.

I have edited some values to customize the graph. I wanted to narrow the range of ease shown to max = 260, min = 130. This is super easy to do. Harder was figuring out how to get it to display more graphs for ease at 5% intervals instead of the default 10%. To do that, I replaced the line with "select round(factor/100)*10 as int from cards" and changed it to "select round(factor/50)*5 as int from cards" - not too difficult (but also required changing width of bars from 6px to 4px). The one thing I can't figure out how to do is to change the X-axis labels to show every 10 percentage points instead of 20. Any suggestions?
on 1539498107
Should've been in vanilla Anki
on 1536553003
Very good. Would be nice to be able to see the plots separately for "learning", "young", and "mature" cards.