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The science of passing

Science already knows how people actually learn. Lyper just did the work of applying it.

Decades of research in the psychology of learning point the same way: how most people study (rereading, highlighting, watching lectures) is what works least. Lyper was built on the techniques with the strongest measured effects. Here they are, with the studies.

Start studying the right way → Every number on this page has the paper next to it.
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The premise

Studying more is not studying better.

Intuition lies. Rereading a study guide ten times creates a feeling of mastery: you recognize the text and feel like you know it. But recognizing is not retrieving. On exam day, with a blank screen in front of you, the knowledge does not show up. Science calls this the illusion of fluency, and it is the most expensive mistake an exam candidate makes.

What rereading feels like

0%
sense of mastery

What shows up on the exam

0%
real retention after studying once
Students abandon effective strategies because the ineffective ones feel like they work better in the moment. Carpenter, Pan & Butler, Nature Reviews Psychology, 2022

Lyper solves this by taking the decision out of your hands: the method is the default, because the research shows that, left alone, almost nobody picks the most effective path.

The core of the method

The 4 techniques that move
your result.

Each one has among the strongest effects measured in educational psychology. Every number here came from the primary source. Click and check.

0→1

How to read the numbers. "Effect size" is how much a technique changes your outcome. The ruler science uses: 0.2 small · 0.5 medium · 0.8 large. The higher, the stronger, and the bar in each card shows where it lands.

01

Answer questions
(instead of rereading)

Testing your memory is itself an act of learning, far stronger than passive review. It is the most replicated effect in educational psychology.

0.00large effect
smallmediumlarge
Adesope et al., Review of Educational Research, 2017 ↗ · Yang et al., Psychological Bulletin, 2021: 222 studies, 48k students ↗
Practice by questions is the center of the product, not an extra.
02

Review spaced out
(right before you would forget)

Reviewing a little at a time over days beats reviewing everything at once, without exception. The system reschedules each topic to its ideal interval.

0.00large effect
smallmediumlarge
Among the largest effects ever measured in learning.
Latimier, Peyre & Ramus, Educational Psychology Review, 2021 see study ↗
The review schedule is automatic. Lyper remembers for you.
03

Relearn to mastery
(successive relearning)

Getting it right once does not make it stick. Retrieving the concept to a mastery criterion and rescheduling it over the following days is what separates those who retain from those who forget.

0%retention after 1 month, against 11% for studying once
11% once68% relearning
Rawson & Dunlosky, Current Directions in Psychological Science, 2022 see study ↗
Review tests the concept in different questions, never the same memorized one.
04

Feedback that explains
(not just right or wrong)

Knowing you missed barely teaches anything. Understanding why you missed is what corrects the reasoning.

0.00medium effect
smallmediumlarge
■ Just saying right or wrong: nearly zero (0.05).
Van der Kleij et al., Review of Educational Research, 2015 see study ↗
Every question comes with an explanation of the why.
The differentiator

With Lyper, you study what matters for your exam.

Practicing is necessary, but practicing anything is not enough. Left alone, candidates repeat what they already master (because it feels good) and avoid the gap (because it hurts). Lyper's adaptive engine does the opposite: it identifies your real level in each section of the official outline and serves the question that moves your result now.

0.00

Shallow personalization

same content, different pace: small effect
0.00

Adapts to your real level

double the effect, close to medium

Major, Francis & Tsapali, British Journal of Educational Technology, 2021 meta analysis, 16 RCTs, 53k students ↗

+0.00 SD
Evidence at scale.
A controlled study with 11,400 university students: an adaptive system raised math performance by +0.28 standard deviations in about 4 months.
Angel-Urdinola et al., World Bank, 2023 ↗
Studying everything is studying nothing. Lyper solves relevance.
Counter positioning

Lyper's AI does not hand you the answer, and that is on purpose.

Free access to GPT (ready answers)−17%
worse on the exam without AI
AI that gives hints, not answersreal gain
harm disappears, learning shows up
Bastani et al., PNAS, 2025 RCT, ~1,000 students ↗

Asking a chatbot for the ready answer improves today's task and hurts the exam. It was measured: students with free GPT access scored 17% worse on an exam without AI than those who never used it. When the AI gives hints instead of answers, the harm disappears and the gain shows up.

Lyper follows the rule the science points to: explanation only after your effort, and hints in steps, never the answer choice. Because the goal is not getting it right in the app. It is getting it right on exam day.

Honesty

What science does not promise.

Be suspicious of anyone who guarantees you will learn effortlessly. The real effects of good study platforms sit in the 0.2 to 0.4 standard deviation range: meaningful, but not magic. Claims like "learn 2x faster" do not survive rigorous studies.

real range: 0.2 to 0.4 SD
0
0.2
0.4
"2 sigma"
2.0
learn 2x faster guaranteed 2 sigma effect effortless passing

Lyper gives you the method with the strongest evidence behind it and the discipline of applying it every day. The rest, effort and consistency, is still yours. That is the part no app replaces, and we will not pretend otherwise.

Start now

Stop studying the way that feels productive.

Start studying the way science proves. Free to start.

Start a free 5-question session →
No card. A full explanation after every answer.
References

Every claim on this page comes from peer reviewed scientific literature. The central numbers were checked against the primary source. Last review: July 2026.

  1. Carpenter, S. K., Pan, S. C., & Butler, A. C. (2022). The science of effective learning with spacing and retrieval practice. Nature Reviews Psychology. ↗
  2. Adesope, O. O., Trevisan, D. A., & Sundararajan, N. (2017). Rethinking the use of tests: A meta-analysis of practice testing. Review of Educational Research. ↗
  3. Yang, C., et al. (2021). Testing (quizzing) boosts classroom learning: A systematic and meta-analytic review. Psychological Bulletin. ↗
  4. Latimier, A., Peyre, H., & Ramus, F. (2021). A meta-analytic review of the benefit of spacing out retrieval practice. Educational Psychology Review. ↗
  5. Rawson, K. A., & Dunlosky, J. (2022). Successive relearning: An underexplored but potent technique. Current Directions in Psychological Science. ↗
  6. Van der Kleij, F. M., Feskens, R. C. W., & Eggen, T. J. H. M. (2015). Effects of feedback in a computer-based learning environment. Review of Educational Research. ↗
  7. Major, L., Francis, G. A., & Tsapali, M. (2021). The effectiveness of technology-supported personalised learning in low- and middle-income countries. British Journal of Educational Technology. ↗
  8. Angel-Urdinola, D., et al. (2023). Evaluating the impact of computer-assisted learning in Ecuador. World Bank. ↗
  9. Bastani, H., et al. (2025). Generative AI can harm learning. PNAS. ↗
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© 2026 Lyper · Science validates the techniques we use. The effort is still yours.