Your students forget 80% of what you teach.

Within a week. Every week. It's not their fault — it's how memory works. There's a fix, and it's built into every Pakka deck.

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21%
retained after 30 days of re-reading notes
Cepeda et al. (2006)
90%
retained after 30 days with spaced repetition
Murre & Dros (2015), replication
4.3×
more efficient than massed practice
Dunlosky et al. (2013)
The science

The forgetting curve is real — but so is the fix

In 1885, Hermann Ebbinghaus proved memory decays exponentially after learning. Each well-timed review resets the curve at a higher baseline — that's spaced repetition.

Forgetting curve comparison: memory decays without review (red), but stays high with spaced reviews (teal).100%80%60%40%20%0%020min1hr1 day1 week2 weeks30 daysReview 1Review 2Review 3Review 4Time →
No reviewWith spaced reviews (Pakka)

Murre & Dros (2015), replication in PLOS ONE

The evidence

How spaced repetition compares

Data from peer-reviewed studies with thousands of participants.

Retention after 30 days

Re-reading
21%
Highlighting
28%
Self-testing
62%
Spaced rep.
90%
Dunlosky et al. (2013), Psychological Science in the Public Interest

Study time for same result

Cramming
45 min
Re-reading
36 min
Flashcards
20 min
Spaced rep.
10 min
Cepeda et al. (2006), Psychological Bulletin

Exam score improvement

Control
55%
Practice tests
68%
Spaced tests
84%
Roediger & Butler (2011), Trends in Cognitive Sciences
JEE ChemistryNEET BiologyCBSE PhysicsICSE MathematicsHistoryEnglish VocabularyAnatomyGeographyEconomicsComputer ScienceSpoken EnglishUPSC GSJEE ChemistryNEET BiologyCBSE PhysicsICSE MathematicsHistoryEnglish VocabularyAnatomyGeographyEconomicsComputer ScienceSpoken EnglishUPSC GS
"Spaced practice is one of the most robust findings in all of experimental psychology, boosting test performance by 10–30%."
Dunlosky et al. (2013). Psychological Science in the Public Interest.
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See how Pakka cards feel

Tap through real card types — MCQ, True/False, Type Answer, and Plain flashcards. This is exactly what your students see.

Demo Deck1/5
MCQ
What is the powerhouse of the cell?

Select an answer above

Multiple Choice

Students pick from 4 options. Wrong answers auto-rate as Again (card comes back soon). Right answers let the student self-rate recall.

Card 1 of 5
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Three steps. Five minutes.

01

Build your deck

Five card types. CSV import for bulk. Rich text, images, MCQ, True/False, Type Answer. Minutes, not hours.

02

Students join with a code

Six characters. Works in any browser. No app download. Share on WhatsApp or write on the board.

03

Our scheduling algorithm handles the rest

Every card is scheduled individually for every student. 10 minutes a day. You see who studied and who didn't.

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