What is your review of Anki

Review Heatmap for Anki

Your learning performance at a glance

Adds a heatmap graph to Anki's main window which visualizes past and future card review activity, similar to the contribution view on GitHub. Information on the current streak is displayed alongside the heatmap. Clicking on an item shows the cards reviewed on that day.

Video Demonstration

General OverviewCustomization

(Make sure to enable closed-captions for comments on the demonstrated features)



The easiest way to install Review Heatmap is through AnkiWeb.

Manual installation

Please click on the entry corresponding to your Anki version:


The use of the add-on is documented in the Wiki section and a series of video tutorials on YouTube. More information may also be found in the AnkiWeb description.


With Anki add-on builder installed:

For more information on the build process please refer to 's documentation.


Contributions are welcome! Please review the contribution guidelines on how to:

  • Report issues
  • File pull requests
  • Support the project as a non-developer

License and Credits

Review Heatmap is Copyright © 2016-2019 Aristotelis P. (Glutanimate)

Inspired by GitHub's contribution calendar and Forecast graph on Overview page by Steve AW.

Ships with the following javascript libraries:

  • d3.js (v3.5.17), (c) Mike Bostock, BSD license
  • cal-heatmap (v3.6.2), (c) Wan Qi Chen, MIT license

Review Heatmap is free and open-source software. The add-on code that runs within Anki is released under the GNU AGPLv3 license, extended by a number of additional terms. For more information please see the LICENSE file that accompanied this program.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY.

The continued development of this add-on is made possible
thanks to my Patreon and Ko-Fi supporters.
You guys rock !