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Lacuna
Flashcard App for the exam day.
Lacuna is a spaced repetition app that uses FSRS to schedule for the exam date, rather than indefinitely like Anki. Lacuna works around you - the scheduler can be used at all times, rather than just when the flashcard is due - which means that you can squeeze studying into the time that's convenient, without sacrificing quality It has easy importing from Anki and also all the features that you need. It's fully offline and private, with no data sent anywhere unless you choose the opt in sync.
Top comment
As a student, I got frustrated with both bad UI and apps that don't optimise to the metric that I'd like most, which is the exam date. I hope you find this interesting!
About Lacuna on Product Hunt
“Flashcard App for the exam day.”
Lacuna was submitted on Product Hunt and earned 2 upvotes and 2 comments, placing #90 on the daily leaderboard. Lacuna is a spaced repetition app that uses FSRS to schedule for the exam date, rather than indefinitely like Anki. Lacuna works around you - the scheduler can be used at all times, rather than just when the flashcard is due - which means that you can squeeze studying into the time that's convenient, without sacrificing quality It has easy importing from Anki and also all the features that you need. It's fully offline and private, with no data sent anywhere unless you choose the opt in sync.
On the analytics side, Lacuna competes within Education and GitHub — topics that collectively have 120.6k followers on Product Hunt. The dashboard above tracks how Lacuna performed against the three products that launched closest to it on the same day.
Who hunted Lacuna?
Lacuna was hunted by Tom Jiang. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Lacuna including community comment highlights and product details, visit the product overview.

