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.
-
Routine Detection Learns when you pick up your phone throughout the day and schedules cards around your natural habits.
-
Attention Span Mapping Tracks response times and accuracy to identify when your brain is sharpest — then serves harder cards at your peak.
-
Adaptive Difficulty Card complexity adjusts automatically. If you're tired, simpler review. If you're sharp, new material that pushes your limits.
-
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.
FAQ
Common questions.
Serinou turns every phone pick-up into a science-backed micro-lesson. Flashcards appear on your lock screen so you absorb new knowledge passively — no extra time carved out of your day.
Our algorithm tracks how well you know each card and schedules reviews at the optimal moment — right before you're about to forget. This is the same method used by top medical students and language learners worldwide.
Serinou covers Biology, History, Chemistry, Psychology, Philosophy, Neuroscience, and more. You can also create your own decks or import from any topic you're currently working on.
No. Serinou is extremely lightweight. It hooks into your existing lock screen — no background processes, no constant syncing. Impact on battery life is negligible.
Serinou has a free tier with core features. Pro unlocks unlimited decks, advanced analytics, and Focus Lock Mode. The first 500 waitlist members get lifetime Pro access — completely free.
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.