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Review Heatmap

0.07MB. Updated 2017-02-19. Only supports Anki 2.0.x.


     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 or due on that day. COMPATIBILITY The release on here only works with Anki 2.0 for now. If you would like to help test the 2.1 beta, please see here. To report any issues with the beta release, please file a report here. Please do not downvote this add-on simply because it's not listed as compatible with Anki 2.1. Downvoting add-on pages for no reason is not a valid way to get your point across. VIDEO DEMONSTRATION (Make sure to enable closed-captions for comments on the demonstrated features) FEATURES RELEASE LOG This section will always be updated with the latest changes to Review Heatmap. More details on major releases are listed in the next section. For a full release log, including smaller bug fix releases and more details on each entry, make sure to check out the releases page on GitHub. LATEST CHANGES AND NEWS v0.6.0 As this version uses a new file structure you will have to remove older versions of the add-on before updating. Otherwise you might end up with multiple heatmaps. DOCUMENTATION The use of this add-on is documented in the official Wiki and the YouTube videos linked to above. HELP Please check out the Troubleshooting section in the Wiki if you are experiencing issues with the add-on. Bug reports and suggestions are always welcome, but it might take me a while to get to them. Please do not use reviews for bug reports or support requests. I don't get notified of your reviews, and properly troubleshooting an issue through them is nearly impossible. Instead, please either use the issue tracker (preferred), add-on support forums, or just message me at ankiglutanimate@gmail.com. Constructive feedback and suggestions are always welcome! CREDITS AND LICENSE Copyright (c) 2016-2019 Aristotelis P. Inspired by GitHub's contribution calendar and Forecast graph on Overview page by Steve AW. Ships with the following javascript libraries: Licensed under the GNU AGPL v3. The code for this add-on is available on GitHub. OTHER ADD-ONS Make sure to also give some of my other add-ons a try: There are also a number of other great add-ons out there that will help you gamify Anki to an even further extent than with Review Heatmap alone. I go over a few of them in the following video: MORE RESOURCES Make sure to check out my socials for the latest add-on updates and news: @Glutanimate | / Glutanimate New: Receive notifications about new add-on releases via @AnkiUpdates Want to hire me to work on add-on for you? Get in touch at ankiglutanimate@gmail.com SUPPORT MY WORK If you like Review Heatmap, please give it a thumbs up and share it with your friends, so that more people can enjoy it! A kind request: Writing, supporting, and maintaining Anki add-ons like these takes a lot of time and effort. If Review Heatmap has been a valuable asset in your studies, please consider using one of the buttons below to support my efforts by pledging your support on Patreon, or by buying me a coffee. Each and every contribution is greatly appreciated and will help me maintain and improve Review Heatmap as time goes by!              Pro-tip: Lots of exclusive add-ons and other goodies await on my Patreon page. Make sure to check them out!


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.

Other Anki 2.0.x Add-Ons Ask a Question


on 1560855468
Using the beta for 2.1. Works very well.
on 1560727187
Appears to work well in 2.1 as a beta. Thanks!
on 1560423742
Super helpful and motivating.
on 1560264899
Works wonders!
on 1560255918
Very helpful and encouraging to see past/future statistics!
on 1560252472
Amazing stuff!
on 1560166334
Looks very nice!
on 1560121463
great addon; glutanimate is a godsend for medical students
on 1559828897
good job
on 1559813507
Really cool to see my stats!
on 1559737624
on 1559419508
2.1-compatible version from GitHub seems to work so far. Nice add-on :)
on 1559351032
on 1559191771
Great work!
on 1559135054
I'm waiting for the stable 2.1 release. Thx!
Comment from author before post was edited
Hi. The beta for Anki 2.1 is linked in the description above: https://github.com/glutanimate/review-heatmap/blob/master/CHANGELOG.md
As you can see it comes with a plethora of changes, all of which need more testing before being ready for a stable release.
Add-ons whose stable versions are compatible with Anki 2.1 are listed on a separate page on which Review Heatmap does not appear: https://ankiweb.net/shared/addons/2.1 . It's kind of disheartening that you went out of your way to go to the 2.0 page to leave a thumbs-down on the add-on, especially given that the 2.1 version is clearly linked in the description above :(
on 1559069896
on 1559009414
on 1558839359
So far so good!! Thanks A LOT!!
on 1558832448
Very good.
on 1558821722
Great Add-on
on 1558820301
on 1558573107
Thanks a lot! No problems with the 2.0 one and the 2.1 version works perfectly for me as well!
on 1558545539
Thanks a lot, fit and beautiful.
on 1558458465
Creative add on with a helpful motivator. Thank you!
on 1558251377
anki2.1上也能用,作者很棒,author is very handsome
on 1558236629
on 1557933449
on 1557793648
on 1557664527
on 1557486158
Really good add-on, I'm using the beta for 2.1 and it's working perfectly so far! Thank you so much for making this, really amazing how much hard work you put into these quality add-ons :)
on 1557399952
Not working on Anki 2.1
Comment from author
Hi. The beta for Anki 2.1 is linked in the description above: https://github.com/glutanimate/review-heatmap/blob/master/CHANGELOG.md
As you can see it comes with a plethora of changes, all of which need more testing before being ready for a stable release.
Add-ons whose stable versions are compatible with Anki 2.1 are listed on a separate page on which Review Heatmap does not appear: https://ankiweb.net/shared/addons/2.1 . It's kind of disheartening that you went out of your way to go to the 2.0 page to leave a thumbs-down on the add-on, especially given that the 2.1 version is clearly linked in the description above :(
on 1557235220
on 1557200448
Very useful to keep me motivated to continue reviewing, thank you!
on 1556949826
Fantastic work, as always! I sent you an email at ankiglutanimate@gmail.com requesting some help troubleshooting the anki 2.1 heatmap if you have a minute. Thanks!
Comment from author
Hi! Thanks for the review. Just wanted to let you know that I received your email, but didn't have time to look into it yet. I am working on a new beta release at the moment and my hope is that this new version will help address the issue you're seeing. I will ping you once the release is ready.
on 1556746354
Great way to easily keep track of what cards you go over during your sessions.
on 1556693925
Thank you for your sincerely help, It works well after I installed Anki 2.1. It help me to track how many reviews I have done each day! Very useful add on
Comment from author before post was edited
Hi. I replied to you here: https://anki.tenderapp.com/discussions/add-ons/8707-review-heatmap-official-thread#comment_47221802
on 1556579237
Very nice! thanks! is like the github histograph
on 1556524828
It works well and helps to keep me motivated with visualising the data
on 1556340778
Get this to the new version, please.
Comment from author
Hi! Thanks for the rating. Betas for 2.1 are available here: https://github.com/glutanimate/review-heatmap/blob/master/CHANGELOG.md
on 1556313349
Simplesmente ótimo ( awesomeeeee :)
on 1556203144
on 1556190159
Hey can you help me? I have the newest version of Anki and it says that it isn't possible to add this one! What can I do? Thank you very much.
Comment from author
Hi. The version on AnkiWeb is only compatible with Anki 2.0. For Anki 2.1 there is a beta release here: https://github.com/glutanimate/review-heatmap/blob/master/CHANGELOG.md (also linked in the description above)
I would appreciate it if you removed the thumbs-down as it's kind of unfair to downvote the add-on when the version here is not advertised to be compatible with Anki 2.1 :(
on 1556054277
Version 2.1 great!
on 1555717229
Awesome! Thanks!
on 1555636932
GitHub build (https://github.com/glutanimate/review-heatmap/tree/b668b00192428d6d954d870dfbe69b86a1964523) works well with other add-ons in the most recent release, including Night Mode. Very pleased!
on 1555528256
Exceptional add-on.
Not gonna say much other than it's so good it should come stock with the app.
on 1555303204
can't wait for anki 2.1 version
on 1555251865
Makes me feel good
on 1555124553
That's so great!
on 1555086159
Really keeps me accountable when I see I am slacking off and makes me want to keep up my streak. I also like being able to see the projection for my reviews
on 1554860334
on 1554231335
Thank you very much, I would love to have this in the Android App as well.
on 1553613068
Great tool! Will have update for anki 2.1?
on 1553459935
This is the bomb
on 1553399781
Very helpful to visualize progress.
on 1553365041
on 1553130428
Excelente *-*
on 1552940081
Great visualization tool. Thank you so much for the effort!
on 1552895520
a great add-on many thanks to the developer
keep going man!
on 1552883389
Very Good!
on 1552845317
Love the display, and the streaks!
on 1552265632
i love it!
on 1552151946
Awesome! Nice visuals to SEE my progress. Thanks for this glutanimate! I look forward to the 2.1 release.
on 1551904510
This add-on is completely useful and awesome!
on 1551844768
Absolutely cool! Using the 2.1 beta
on 1551644835
muito bom para acompanhar o seu progresso
on 1551260934
Love it and hate to even do Anki without it <3
on 1551086037
Comment from author
Hi. Anything in particular you're having issues with? I'm happy to help, but there's not much to go on in those 4 letters.
on 1550719154
on 1550586584
The beta version is working just fine with 2.1.5
on 1549288545
Excellent for viewing a history of the previous days/months and the cards done in each one.
on 1548963695
I got this on Github before the releasing on Anki. It's pretty nice
on 1548869075
Works nicely so far. I like the idea of visualizing the progress as heatmap.
on 1548715622
on 1548649351
I love this. But will there be support for version 2.1 still? I upgraded to version 2.1 but see there is no update for it yet. Is it still in the works? Thank you!
on 1548529642
makes anki look even more beautiful
on 1548388039
very useful, just like GitHub
on 1548329046
Muito Bom!
on 1548175036
Tried out the beta for Anki2.1 and looks great!
on 1547993428
i love it! i really helps with staying motivated to learn! thank you!
on 1547462800
I just love that I can watch my performance in a shiny and colorful way for many months ahead.
on 1547354912
Very good~
on 1547346165
Excellent visual help to motivate.

Excelente ayuda visual para motivarse.
on 1546702224
Fantastic add-on. A couple suggestions:

Behavior of this heatmap could use a little tweaking, IMO. For example, when it's shown in Statistics, it chops off "longest streak" and "current streak" stats at 31 days if the radio button at the bottom is set to 1 month. It will also chop off the heat map history at the same point. This behavior doesn't make a lot of sense to me for a big-picture-overview type of map addon. We should really be seeing the full history (or at least the amount set in the heat map prefs dialog).

In addition, the way it deals with year boundaries (esp relevant right now) seems suboptimal -- you really lose the big picture right at the beginning of the new year. I don't want to see a blank heatmap of 2019, especially where Anki's normal forecasting is pretty limited. Maybe a better default behavior would be to try to split the year between previous year and current year near the 6-month marker, or even let the user set the number of days/months of look-ahead so that the past reviews are shown in more detail. If set to "months", you can page back and page forward to get a view of past reviews +1-2 months (but this has to be redone every time the heatmap is re-rendered). IMO this behavior should be default with the months setting, and maybe default for the year setting as well.
Comment from author
Thank you very much for the helpful feedback! I will have to give your suggestion regarding the stats window some thought. My intent with that was to follow suit with the rest of the statistics, but given Review Heatmap's interactive nature it might be time for a different approach.

Agreed about the behavior around boundaries. This is much improved in the current beta release. You should definitely give it a try if you feel confident with installing add-ons manually!: https://github.com/glutanimate/review-heatmap/blob/master/CHANGELOG.md
on 1546666084
It looks beautiful and keeps me motivated.
on 1546616992
A good add-on.
on 1546614732
Very Good
on 1546100116
on 1546094596
on 1546042198
on 1545961786
this tool make me happy when i finish my work .Thank you for the developer !thank you so much !!
on 1545928986
very goooooooood
on 1545608761
very helpful, simple yet advanced tool to track your progress and motivate you to study more with flashcards and to help to gain more study discipline
on 1545558288
on 1545364391
otimo, olhar o progresso ao longo do tempo e sentir uma motivação
on 1545174089
Thanks for your time, Glutanimate! You're amazing.
on 1544996207
Melhorou minha motivação para aprender coisas novas
on 1544672849
Installed it on an older Anki version and it's great. Looking forward to having it for 2.1. This is awesome, really.
on 1544180535
on 1543790347
Great, unobtrusive, motivating.
on 1543520916
One of my favorite addons, super motivating. Would love to see the update to 2.1
on 1543418711
This is a must have for for Anki. I can't wait until the release it for 2.1.
on 1543095181
on 1542908395
Awesome add-on. Looking forward to seeing it on 2.1
on 1542866062
It is motivating to see visually that I did semething yesterday or last week...
on 1542807031
Great add-on!
on 1542674614
on 1542287830
Awesome addon! Pretty cool to see my progress on the front page of anki.
on 1541962735
Nice visualization feature, same idea as in Github. Although support for 2.1 version is missing.
on 1541901092
Es genial para hacerse una idea de la cantidad de estudio por épocas y también permite consultar de manera sencilla qué tarjetas has estudiado cada día.
on 1541859136
works great!
on 1541856129
awesome add-on!!
on 1541835812
simple and easy to understand. thanks!
on 1541797571
Mad props
on 1541792746
A truly elegant feature that is highly motivating while studying. Great work, great selection of color schemes. Thank you!
on 1540955426
Great job! this is perfect!
on 1540844453
Great idea that works really well.
on 1540797727
A great help with both tracking progress and keeping me motivated
on 1540746908
Allows you to keep track of what you've reviewed
on 1540698204
This gives a great overview of how you're actually doing.
on 1540612314
Good revision tool to see where you are at.
I also like how you can customize it :)
on 1540372447
it's really useful and gives good feedback when you can see how much you've done every day
on 1540357180
Good one! A Great guy!need 2.1x heatmap
on 1540031393
very good
on 1539980852
need this in 2.1 asap !! best add-on
on 1539765741
on 1539498375
Gives you motivation and a sense of achievement.
on 1539465104
Good, Very Good
on 1538554072
I love it! It shows my progress at a glance.
on 1538531115
Gives me motivation to study daily. Looking forward to updates.
on 1538261173
looks like github , awesome!
on 1538224337
Works great, I love having an overview of progress on the welcome page, and the shortcuts to browse each day's reviews are handy. Thanks for working on it!
on 1538100864
This is my first, add-on. This is great.
on 1537970884
waiting on 2.1 version
on 1537893467
on 1537703798
How do I install the 2.1 version from GitHub?
on 1537399937
we need 2.1 version.
on 1537104004
waiting update
on 1536878774
I never realized how much I loved this until I installed Anki 2.1 and discovered it wasn't (yet) compatible. Gosh how I miss those little green squares! Thank you for your work, it's a really great addon when it comes to motivating oneself!
on 1536749760
Ease of use; good motivation to keep up learning
on 1536514548
Sensacional!! Dá pra ver suas estatísticas na tela principal de todos os decks, e dá pra ver só de um deck se você entrar nele. E o mais incrível, as configurações detalhadas. Dá pra mudar as cores, dá pra colocar organizado por ano, como você por padrão, ou por mês. Também dá pra limitar em quantos dias você quer ver seu progresso. Se fosse pago eu pagaria de olhos fechados!
on 1536402947
on 1536370081
on 1536244543
on 1535928137
Thank you for your hardwork.
on 1535909498
Really great add-on for anki, thanks!
on 1535725635
Nice function~
on 1535685239
Love it, although I wish the default history was longer then 365, this scared me until I realised I could change it.
on 1535086962
on 1534138137
on 1534098910
amazing! waiting for 2.1 support :)
on 1534009077
Awesome addon to keep track.
on 1533805676
We need 2.1 version!
Comment from author
Thanks for the rating! Working on it as we speak :)
on 1533763525
Really nice!
on 1533009740
Love this add-on! Is it possible to make a color scheme that meshes better with the Night Mode add-on? I didn't want to mess around with the code.
on 1532613448
Great design and functionality
on 1532417493
it helps to track the progress
on 1532338081
thank you so much, this map helps keep me motivated to continue my streaks!
on 1532324924
Works perfectly, love it
on 1532269425
Thanks. Donated
Comment from author
Thank you! I really appreciate that!
on 1531512333
Works great! Really helps me in maintaining motivation to learn.
on 1531307696
Lovely! Motivates you. Helps you find the days when you struggle to do your reviews (for example it's the weekends for me when the daily routines are out of the picture)
on 1530730028
Amazing, it's so motivating to see my progress so far :)
on 1530638134
on 1530348078
Great visualization
on 1530101126
It's useful and nice complement to Anki interface.
on 1529696322
Reason? It's awesome
on 1528891554
Keep up the great work...Glutanimate...the add-on is amazing..
on 1528588800
I love this add-on! Being able to see what I've done really motivates me to complete what I'll have to do.
on 1528502400
Since you can visually see your progress, it's very motivating to keep doing cards everyday and do more reviews than your previous day
on 1527724800
on 1527379200
on 1527033600
on 1526688000
Really neat overview.
on 1526428800
Really nice, it shows our reviews history and upcoming reviews per days (columns). Congrats!
on 1526256000
Cool ;__;
on 1525046400
Great addition. Just what I was looking for.
on 1524960000
Motivating and informative. :)
on 1524787200
How can I activate the Heatmap in my Anki 2.0.51 version? Because my Anki is not 2.0.37 and earlier and i do not have the 2.1 Beta. I am in between, where this Addon seems to have no support at all xD
on 1524700800
Good for heating up my lazy, unmotivated ass.
on 1524528000
Very useful
on 1524355200
definitely one of my favorites
on 1523577600
Yes it's good
on 1523577600
It's not working on the new Anki version :/
Comment from author
I'm actively working on the 2.1 port, and have been doing so for months now: https://github.com/glutanimate/review-heatmap/commits/master. But leaving a thumbs-down in the review section won't get you the port any faster. (Nor will it for any any of the other add-ons you left a thumbs-down on for the same reason).
on 1523577600
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on 1523318400
on 1522886400
Works great! Just as described!
on 1522800000
on 1522627200
Fantastic !!
on 1522454400
on 1521849600
on 1521763200
very motivating, thank you!
on 1520380800
it works well!
on 1519171200
A most excellent add on - not only aesthetically pleasing, but also useful in how it gives fast access to summary of statistics on past and future reviews.
on 1518652800
on 1518652800
Perfect !
on 1518566400
It's a good idea!
on 1518220800
on 1517616000
on 1517356800
on 1517184000
on 1516924800
This is an very solid addon, it increases the sensation of routine
on 1516665600
It's exactly want I wanted
on 1514678400
Very elegant.
Just one problem is that after I imported a shared deck, the due dates for this deck appeared in my heat map. I used the "Reset card(s) scheduling information / progress" addon on this deck, but they still show up on my heat map.
on 1514505600
This add-on makes it much easier to view progress over time and I would say it certainly "gamifies" anki more by adding visual progress.
on 1514246400
Helpful visualization. It pretties my Anki up too :)
on 1514246400
Very motivating! Keep up the good work. Your Addons are amazing
on 1513641600
I really like this add-on. It motivates me too keep using Anki every day!

I noticed a problem though. There are some 'empty' days in the heat map, but I remember well and I'm sure that I did study on those days. Some other days also show less cards reviewed that I remember reviewing. Could it be because I used AnkiDroid? I'm not sure though if the days I used AnkiDroid on and the empty days in the heat map correlate with each other 100 percent, it's just a suspicion.
on 1513555200
on 1513123200
Great visual improvement.
on 1512864000
A great motivator—can't help making a quick review just to upkeep the streak!
on 1511913600
Awesome motivator and way to track reviews per day
on 1511827200
on 1511568000
Great for a clear overview of usage!
on 1511222400
Thank you so much, the interface is just great, it keeps me on track and motivated.
on 1511136000
Love it. It is motivating.
on 1508198400
Neat visualisation

I like this add-on for its concise yet useful visualisation of one's review progress. It gives a nice breakdown by days, weeks, and (optionally) months. I like its forecast function too. Thanks for the great add-on and its high quality.
on 1507680000
An error happened when I deleted a uncompleted deck and tried to open statistic


Traceback (most recent call last):
File "aqt\webview.py", line 152, in _linkHandler
File "aqt\toolbar.py", line 74, in _linkHandler
File "aqt\toolbar.py", line 94, in _statsLinkHandler
File "aqt\main.py", line 732, in onStats
File "C:\Users\lenovo\AppData\Roaming\Anki2\addons\review_heatmap\main.py", line 340, in my_statswindow_init
File "aqt\stats.py", line 89, in refresh
File "anki\stats.py", line 124, in report
File "anki\hooks.py", line 61, in repl
File "C:\Users\lenovo\AppData\Roaming\Anki2\addons\true_retention_graph.py", line 161, in new_progressGraphs
IndexError: list index out of range
on 1504137600

Útil para verificar o progresso dos estudos.
on 1500940800
Keeps me motivated

A must add-on to carry you forward through dark Anki days. ;-)
on 1497484800
Motivating and Beautiful.

Visualization is always more informative than numbers. Once more glutanimate rocked with an awesome add-on.
on 1492646400
So simple, so nice

This visualization helps me with motivation! It is very nice, thank you!
on 1489363200
Lovely add-on

It's nice to visualize progress this way, thank you very much!
on 1487289600

Idéia incrível. Excelente.

Existe uma versão desse add on, para ankidroid ?

Seria muito legal ...
on 1484265600
Awesome Addon

Great way for me to see how well I am keeping up with my review. For those who are having issues with not being able to see the Customizable option menu, follow the manual installation instructions. This worked for me.
on 1484179200

It would be interesting to create a link that leads to the study of these cards by the day selected in the application.

??In the last update it is described that a customization option was created in the tools menu. But the add-on is not appearing on the Tools menu. So I do not have access to your customization options. The add-on only appears under "Add-ons." (System microsoft windows XP)
on 1484179200
This heatmap add-on rocks! No more card-punching apps.

This add-on is really useful if you want to keep track of your learning "flow". Purely amazing!
on 1483660800

Thank you so much.

Last year I reviewed between 200 and 900 cards daily (with a few exceptions). The map looks fantastic. So much work…

Tools like these are great because they not only provide information but also encourage one to do even more – in particular, not to miss a single day. It's super stimulating!

I'm on macOS 10.11.
on 1483574400
Awesome idea

But I agree with the previous comment of high daily review counts just becomes a wall of blacks. I review on avg about 200 cards per day.

Nevertheless it is very interesting see the heatmap when I scroll back to a few years ago when I just first started anki (doing 50-100 cards/day).

Sorry I don't have any better idea on how to help make it better tho :(.
on 1483315200
Consider changing color scale

For decks with large numbers of reviews (my daily reviews tend to average somewhere between 200 to 500 cards), the heatmap just looks black, despite there being up to 300 review differences between different days:


Makes it not overly interesting if I can only differentiate visually between days where I happened to only do none, a few dozen, or my normal days.

Consider adding more shades of green to allow for more groups and to change the batch sizes instead of being in groups of 20, to a sliding scale where the batches grow as you go up in number. For example, a scale more like [0, 1-25, 25-60, 60-100, 100-175, 175-300, 300-500, 500+] would probably make the graph interesting both for people with small number of reviews a day (4 color categories below 100) and for people like me with a large number of reviews.
on 1483228800
Thanks 's message

A great extension, thank you very much.
I suggest to add this extension to the next version of Anki.
Thanks again.