Awesome Open Source
Awesome Open Source

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 Overview Customization
YouTube: Anki add-on: Review Heatmap YouTube: Add-on Update: Review Heatmap

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



The easiest way to install Review Heatmap is through AnkiWeb.

Manual installation

  1. Download the latest .ankiaddon file from the releases tab (you might need to click on Assets below the description to reveal the download links)
  2. Open the folder where your downloads are located and double-click on the downloaded .ankiaddon file.
  3. Follow the installation prompt and restart Anki if it asks you to


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.


Review Heatmap's build system recently underwent a number of changes. Updated build instructions will soon be added here. Please stand by.


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 2016-2022 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 !

Get A Weekly Email With Trending Projects For These Topics
No Spam. Unsubscribe easily at any time.
Python (862,627
Heatmap (1,588
Anki (1,332
Reveal (1,167
Anki Addon (136