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ACTRA
Turn passive study into active recall & interactive practice
ACTRA is an open-source web platform where you can create custom study tasks (image hotspots, drawing, text checks), bundle them into complexes, practice with spaced repetition, and track your retention progress in one clean environment.
Hi hunters!
I’m Valerii, a practicing radiology intern.
In medicine, and especially in radiology, the volume of information you have to master is overwhelming. Textbooks, reference manuals, and anatomical atlases are massive. I quickly realized that passive reading and highlighting text was useless—information just evaporated from my brain within weeks. To actually learn, you need active recall, pattern recognition, and visual practice.
Standard flashcard apps are mostly limited to text input. Since 2022, I’ve been coding as a hobby with the help of AI. I decided to build a platform that solves this learning gap. That's how ACTRA was born.
ACTRA is an open-source web application designed to help you work with study materials:
1. Create Custom Tasks: Build standard quizzes, spatial clicks (hotspots on images), vector drawing/path tracing, or word-error checks.
2. Fuzzy Text Grading: Our backend rules-based engine handles typos (Levenshtein distance), stemming, and auto-corrects accidental keyboard layout entries.
3. Spaced Repetition (Microcards): Plan reviews dynamically based on memory health curves.
4. Integrated Theory: Bridge reading materials directly with practice sets.
ACTRA is 100% open source (Apache 2.0). I’d love to hear your thoughts and feedback on how we can improve. Try the web version or check out the code!
Let's make learning kinetic!
The way you bundle different task types into complexes instead of forcing everything into flashcards is a really thoughtful UX choice. Spaced repetition with image hotspots and drawing feels way more useful than yet another card app.
About ACTRA on Product Hunt
“Turn passive study into active recall & interactive practice”
ACTRA was submitted on Product Hunt and earned 6 upvotes and 2 comments, placing #160 on the daily leaderboard. ACTRA is an open-source web platform where you can create custom study tasks (image hotspots, drawing, text checks), bundle them into complexes, practice with spaced repetition, and track your retention progress in one clean environment.
ACTRA was featured in Open Source (68.6k followers), Education (78.8k followers), SaaS (43k followers) and GitHub (41.3k followers) on Product Hunt. Together, these topics include over 116.6k products, making this a competitive space to launch in.
Who hunted ACTRA?
ACTRA was hunted by Valerii Hl. 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.
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Valerii Hl