A forest and a study heatmap that grow from your Anki study history. Every day you learn new cards plants a tree below your deck list, and the heatmap under it shows the days you studied, your streak and the reviews ahead. There is nothing to click and nothing to manage: just study, and watch it grow.

A tree starts as a seedling and grows as you come to know its day's cards: within a few weeks it is a young tree, and the days you know best keep growing for years, into ancient giants. If you start forgetting a day's cards, its tree gets a few yellow leaves, and they turn green again once you relearn them. Trees never die. Days when you only review don't plant a tree, but they keep the ones you have healthy.

So the forest is a picture of what you know: its size is how much you have learned, and its colour is how well you remember it. Point at a tree to see its day and how well you remember it. Take a week off and a pond appears where the missing days would be. Keep studying and animals move in, and after a year a little cabin appears at the edge of the woods.

Your study days, streaks and upcoming reviews, in your scenery's colours. Hover for details; click a day to open its cards.

• Views: a rolling timeline, a full year, or your whole streak at once.
• Pick days: Shift-click or Ctrl/Cmd-click days to light up their trees.
• Reviews, time or pace: shade days by review count, study time or seconds per answer.
• Per deck: each deck has its own heatmap and streak.
• Fair streaks: days with nothing due don't break your streak.
• Rest days: choose a 5- or 6-day study week.
• Trophies: medals for your three longest streaks, and a flag for your next goal.
• Milestones: see when each animal joined your forest.
• Important days: right-click to mark exams, trips and other dates.
• Week start: Monday, Sunday, Saturday or your system's setting.
• Your look: customize its colours and style in the Heatmap tab.

These arrive in Memory Forest Plus first, and come to this version later on. Join on Patreon to get them now.

The forest notices how you study, not just what you learn. Good days leave something behind for you to find. Whether bad habits leave a mark too is up to you: pick a Nature on the Forest tab of the settings.

• Peaceful (the default): only the good things. Days away cost you nothing.
• Wild: bad habits leave marks until you fix them. Miss two days in a row and smoke rises from the forest as a warning; miss a third and a fire breaks out, spreading while you stay away. A weekend off is fine. Seven days of study put it out.
• Merciless: a single day without reviews brings down an asteroid on the whole forest, and a new one grows from there. Bad habits leave their marks too.

Change your mind at any time: switch back and your forest is just as it was.

Choose where the forest and the heatmap sit on the Forest tab of the settings.

Turn on "Show my forest on my phone" on the Forest tab. After your next sync, a Memory Forest deck appears in AnkiDroid: open it to see your forest, with your study heatmap under it. Your computer draws this copy, so it updates whenever Anki syncs there.

• Anki 2.1.45 or later, on a computer (Windows, macOS, Linux). AnkiDroid can show a copy of your forest that your computer sends it (see On your phone).
• Using Onigiri? It hides the forest until you add it to its grid: here's how.
• Everything is computed on your computer from your own review history. The only thing that leaves it is your city's name, and only if you turn on the real weather: it is sent to Photon (OpenStreetMap, free, no account) to find the place, and its coordinates to MET Norway (free, no account) for the forecast. The copy of your forest for your phone goes through your own AnkiWeb sync, like any card.

• Memory Forest now speaks your Anki's language: German, Spanish, French, Brazilian Portuguese, Japanese, Chinese, Arabic and Hebrew, with right-to-left layouts for Arabic and Hebrew; pick another on the About tab.

• The Streak view and the forest's layouts got a polish, and the Streak view now fits in an Onigiri tile.
• Selecting heatmap days is easier to find and works from the keyboard too.
• The settings now fit on smaller screens, like 1280×720.
• Frozen ponds now take on the colours of dusk and night.

• Your forest on your phone no longer gets cut off in landscape full screen, and says more plainly when it last synced.
• No more "tried to update its config" warnings where Anki can't save the add-on's settings, like on NixOS.

• Starry night is now in the free edition.
• Put the forest and heatmap beside or above your deck list (Forest tab).
• A Streak view shows your whole streak at once.
• Select heatmap days with Shift-click or Ctrl/Cmd-click to light up their trees.
• Misty mountain valley and Rainy bamboo grove now have their own heatmap tiles.
• Surprise me daily can skip sceneries you'd rather not see.
• A start date can now keep your earlier trees (Decks tab).

• Every scenery got a polish: sunlit lakes, rain on the water, drifting mist and more.
• The heatmap follows the time of day, and its width can be set.
• Nature's levels now show what they do, in a short animation.
• Empty heatmap days now match the scenery's tiles.

• Fixed a blank widget in Onigiri.

• A study heatmap under your forest, and on your phone: the days you studied in your scenery's colours, your streak, and the cards due ahead.
• A new landmark: the Pagoda, a temple in the mist.
• Your forest and heatmap now also show on a finished deck (Forest tab, "On finished decks too" turns it off).

• Synthwave, Lanterns at night and the Rainy bamboo grove have been repainted.
• The forest now uses about 45% less CPU on average, and up to 75% less in some sceneries.

• Clearer settings: Scenery, Forest and Decks tabs, and they now fit smaller laptop screens.
• Choose your scenery right on the Scenery tab, from moving previews of each one.
• "Animate the forest" is now On, Off, or Follow system, which keeps the forest still when your system is set to reduce motion.
• The settings reopen on the tab you last used until you quit Anki, and Cancel now also undoes Restore defaults.
• Live weather now comes from MET Norway, and your city can be typed in its own language, like 東京.
• The add-on now works in Anki 2.1.45 and later.
• New sceneries and features now announce themselves, and the About tab shows what's new.
• A tree's tooltip now says when a leech's crow leaves: once the card is mature again.

• A deck's own forest now reacts to how you study, just like your main forest, and on Peaceful it no longer shows the signs of bad habits.
• The settings look right again in Anki 2.1.50, and the forest shows again in the versions of Anki made for older computers.
• Unticking "Show my forest on my phone" now stays unticked after a sync from your phone.
• A start date now begins the forest afresh: days before it no longer bring ancient-tree news, animals or Nature's marks.
• The start date now follows Anki's day, which begins at its rollover hour.

• Your forest on your phone, in AnkiDroid (turn it on in the General tab).
• The forest notices how you study: good days and bad habits leave their marks.
• Nature, a new setting on the General tab: choose how much the forest holds you to account for days away, from Peaceful to Wild to Merciless.
• New animals to look forward to, years into your forest.
• A new History tab: see how many trees each deck grows, leave decks out of the forest, or start it from a date.
• New sceneries, and Memory Forest Plus on Patreon, where they arrive first.
• Choose where the forest shows: on the main screen, on deck screens, or both (Fine-tuning tab).

• A tidier General tab, and a new scenery picker that shows each scenery as a picture.
• Trees now stand on their own for up to two years before joining the deep forest at the back.
• Rivers now wind through the middle of the forest.
• Suspended cards keep their trees.
• The forest uses about 25% less memory, and opening the settings no longer leaks memory.
• The forest uses less CPU.
• The add-on is packed about 27% smaller.

• A pond now appears after one week away instead of two.
• The forest no longer looks wrong after an update.
• Aurora night's mountains no longer vanish behind a very big forest.
• Ponds stay on the ground and no longer overlap.
• The settings cog no longer grows a border on hover.

• First release.