You pick up your phone
You reach for your phone 96 times a day. Serinou captures every single one of those moments.
How it works
EVERY UNLOCK.
A LESSON.
Your lock screen teaches you
Before you even unlock, a science-backed micro-card appears. Answer it, flip it, move on.
Knowledge stacks up daily
30 seconds at a time, spaced across your natural phone habit. No extra effort needed.
Personalised Learning
YOUR PLAN.
BUILT AROUND
YOU.
Serinou doesn't give everyone the same experience. It learns your routines, measures your attention span, and builds a daily learning plan that's uniquely yours — adapting in real time so you always get the most out of every moment.
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Routine Detection Learns when you pick up your phone throughout the day and schedules cards around your natural habits.
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Attention Span Mapping Tracks response times and accuracy to identify when your brain is sharpest — then serves harder cards at your peak.
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Adaptive Difficulty Card complexity adjusts automatically. If you're tired, simpler review. If you're sharp, new material that pushes your limits.
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Daily Plan Rebuild Every morning your plan is recalculated. Yesterday's skips, your sleep pattern, your upcoming goals — all factored in.
YO
Your Profile
Updated today
● Live
Attention span today
Peak focus: 9am – 12pm
Detected routines
☀️ Morning unlock · 07:14
🚌 Commute · 08:32
☕ Lunch break · 12:48
🌙 Wind-down · 21:05
Today's plan
✓
Morning review — 6 cards
07:14
✓
Commute session — 4 new
08:33
Peak session — 8 hard cards
Now
Evening review — 5 cards
21:05
96×
avg. daily phone pickups captured for learning
3×
faster retention vs passive re-reading
30s
average lesson — fits before you unlock
Features
BUILT TO MAKE
YOU UNSTOPPABLE.
Core
Lock Screen Learning
Every time you reach for your phone, a lesson is already waiting. No app to open. No extra routine.
9:41
Biology
What organelle produces ATP?
Tap to reveal
Gamification
Earn. Level Up. Compete.
XP points, daily streaks, and leaderboards turn daily learning into something you actually look forward to.
🔥
14
day streak
Level 8
2,340 / 3,000 XP
⭐
🎯
💡
🏆
1Alex M.4,210 XP
2You2,340 XP
3Sarah K.1,980 XP
Science-based
Breathing for
Breathing for
Peak Focus.
Before each session, Serinou guides you through a proven breathing method — box breathing, 4-7-8, or physiological sigh — priming your brain for maximum retention.
Box Breathing
4-7-8 Method
Physiological Sigh
INHALE
Smart Scheduling
Cards resurface at the optimal moment before you'd forget them.
AI Card Generator
Paste any text and get a perfect set of retrieval-practice cards instantly.
Progress Analytics
Retention graphs show exactly which topics need work and which are locked in.
Any Topic, Any Deck
Choose from curated decks or import your own — science, law, language, and more.
Why it works
BUILT ON
SCIENCE.
Serinou isn't flashcards — it's a cognitive engine. Every card, every review interval, every prompt is driven by decades of learning science.
Spaced Repetition
Cards resurface at the exact moment you're about to forget — locking knowledge in for the long term.
Active Recall
Retrieving information is 3× more effective than re-reading. Every question forces your brain to reconstruct knowledge.
Habit Stacking
Anchoring learning to an existing habit means you never need to "remember to study" again.
Early Tester Reviews
REAL PEOPLE.
REAL RESULTS.
I've tried Duolingo, Anki, Notion flashcards — nothing stuck. Serinou is the only thing that actually fits my life without adding any friction. I learned 200 med terms in two weeks without a single dedicated study session.
The breathing method before study sessions is genuinely a game changer. I was sceptical — sounded like wellness fluff. But my focus went from scattered to laser-sharp within a few days. I wish I'd had this during my finals.
I love that I can't just swipe past the card. That tiny moment of forced engagement is all it takes. I went from 40% retention on new vocab to over 85% in three weeks. The gamification streak kept me accountable.
Didn't expect to care about a leaderboard for flashcards — but here I am checking my rank every morning. The competitive element is weirdly motivating. My study partner joined just to beat me and now we're both way ahead in our prep.
Used it for MCAT prep. The spaced repetition is genuinely smart — it resurfaces exactly the concepts I'm shaky on, right when I need them. I tested well above my practice average and I credit at least part of that to Serinou.
Pricing
TWO PLANS.
ONE GOAL.
Start with the essentials, or unlock the full cognitive engine. Compare side by side — pick what fits.
Premium
€4.99/month
All the basics, every day.
★ Platinum
€7.99/month
Serious learners. Full insights.
Core learning
Lock-screen micro-lessons
✓
✓
Spaced repetition algorithm
✓
✓
Daily streaks & XP
✓
✓
Curated subject decks
✓
✓
Custom flashcard decks
✓
✓
Power features
Serious insights
Attention mapping, retention graphs, weak-spot detection
—
✓
Offline mode
Study anywhere — no signal needed
—
✓
Unlimited study sessions
No daily caps, no review limits
—
✓
Group learning
Shared decks & private leaderboards
—
✓
Unlimited planning
Full exam-prep scheduler, no week limit
—
✓
Premium
€4.99/mo
All the basics, every day.
Core learning- ✓Lock-screen micro-lessons
- ✓Spaced repetition algorithm
- ✓Daily streaks & XP
- ✓Curated subject decks
- ✓Custom flashcard decks
- —Serious insights
- —Offline mode
- —Unlimited sessions
- —Group learning
- —Unlimited planning
Platinum
€7.99/mo
Everything in Premium + serious learner tools.
Core learning- ✓Lock-screen micro-lessons
- ✓Spaced repetition algorithm
- ✓Daily streaks & XP
- ✓Curated subject decks
- ✓Custom flashcard decks
- ✓Serious insights — attention & retention
- ✓Offline mode
- ✓Unlimited study sessions
- ✓Group learning & shared decks
- ✓Unlimited planning
First 500 waitlist members lock in early-bird pricing for life.
FAQ
Common questions.
Your lock screen is dead real-estate. You tap into it 96 times a day and learn nothing. Serinou turns each of those moments into a science-backed micro-classroom — every unlock becomes a tiny lesson. Over a single year, that's 35,000 quiet learning moments you never had to schedule.
Because dedicated study time always loses to convenience. Anki, Notion, Duolingo — all of them require you to decide to learn first. Serinou doesn't ask for that decision. It meets you exactly where you already are, 96 times a day, with zero friction. Habit stacking, not another habit to build.
The attention economy is rigged. Every other app in your pocket is engineered to take something from you — your time, your focus, your dopamine. Serinou is the opposite bet: software that gives attention back, in the form of knowledge you actually keep. We're not building another study tool. We're trying to make the average phone the most-used learning device on earth — without anyone having to "find time to study" again.
Anki and Quizlet ask you to open them. Serinou doesn't. It's not an app you visit — it's a layer that sits between you and your home screen, so retrieval practice happens before you can scroll. Spaced repetition without the discipline tax.
Biology, History, Chemistry, Psychology, Philosophy, Neuroscience, languages — plus any deck you build yourself or import from another tool.
Two plans, both monthly. Premium is €4.99/mo and covers the daily essentials — lock-screen lessons, spaced repetition, streaks, curated & custom decks. Platinum is €7.99/mo and adds serious insights, offline mode, unlimited sessions, group learning, and unlimited planning. The first 500 waitlist members lock in early-bird pricing for life.
We're launching on iOS first. Join the waitlist to be notified the moment the app goes live and to lock in your early-access spot.