Kerf & CodeSoftware, made like furniture
Live on Google Play

Litmus

A book log that shows whose voices you read.

A reading tracker that does the ordinary things well (shelves, ratings, streaks, and book clubs, on the web and Android) and one thing nothing else does: it shows you the range of voices across your reading, quietly and without judgment.

Free to start, and it works before you make an account.

The Litmus stats screen: a two-ring chart of a 110-book shelf, genres inside and themes outside, with Sci-Fi the largest slice at 73 books.
The themes-by-genre chart for a 110-book shelf.
books tracked on Litmus shelves
35,842
books marked finished
20,171
reviews written
3,864

All accounts, many shelves imported from Goodreads, as of September 30, 2026, test accounts left out.

It reads the books, never the people

Litmus reads the author and theme data already attached to your books and shows you the mix across your shelf. It is conservative by design: it never guesses about a person, and it never scolds.

The voices you have not read yet

The chart shows the range across your whole shelf, genres inside and themes outside, so the gaps are as visible as the favorites.

The Litmus import screen, ready for a Goodreads or StoryGraph export file.
The import screen.

Bring your whole library

From Goodreads or StoryGraph, in minutes

Export your library, drop the file into Litmus, and your shelves, ratings and reading dates come with you.

  • Currently-reading and did-not-finish shelves come across as they were
  • Your shelf lives on your device even before you make an account
Litmus badges and achievements, with progress toward each one.
Badges, earned by reading.

Streaks, badges, and book clubs

Freezes cover the days you miss

Reading streaks that survive a busy week, badges worth earning, and clubs where a small group reads together: the parts that make a habit stick, with no public leaderboard.

Bring your Goodreads shelf. See whose voices are on it.

Free to begin, on the web or on Android, and it works before you make an account.

More from the workshop