01Try it yourself

HISTORY

Soviet pilots cut their engines in summer to glide silently toward their targets.

tap to flip

HISTORY

True. The Po-2 night bombers glided with the engine off — only the wind was heard. The Germans called them "sewing machines".

wikipedia.org+5 XP

SCIENCE

How many bones does an adult human have?

tap an answer

NATURE

A banana is botanically a berry. A strawberry is not.

swipe to decide

flip · answer · decide — watch the XP top-right

02How Jolt works

⚡ Jolt🔥 7

HISTORIE

Eiffelovka je v létě o 15 cm vyšší — kov se teplem roztahuje.

♥ 1,2k · ↑ swipe

QUIZ

screenshot placeholder01 · Swipe

Your daily dose of cards

Open the app, swipe the feed. The Daily Dose is done in two minutes over coffee.

Daily Dose14/20

70 %

LVL 2124 XP

🔥 Streak 7 dní — drž sérii!

screenshot placeholder02 · Learn

XP, levels, streak

Every answer earns XP. Every day holds your streak. Your level grows on its own.

⚔️ Duel3:2

TYVSMAREK

1 · Ema2 450 ⚡

2 · TY2 310 ⚡

3 · Jonáš2 180 ⚡

4 · Klára1 940 ⚡

screenshot placeholder03 · Compete

Duels and leaderboards

Challenge friends 1v1, build a squad, join world events. Knowledge as a sport.

03Why we built Jolt

Millions of people scroll for hours every day.

We believe even a few minutes of curious learning a day makes a difference.

Jolt turns passive scrolling into discovery.

Education for everyone · 7 languages · free

04Built to be a habit

🎴

Daily Dose

A hand-picked deck of cards every day. Two minutes over coffee and you're smarter.

⚡

XP & levels

Every answer pays XP. Your level climbs and your friends can see it.

🔥

Daily streak

Show up daily, keep the flame. Miss a day? A streak freeze has your back.

⚔️

1v1 duels

Challenge a friend to a head-to-head and settle who knows more.

👥

Squads

Team up, learn together, climb the leaderboard as a crew.

🌍

World Events

Time-limited themed events. Play, make progress, collect rewards.

🤝

Friends & sharing

Add friends with a code, share cards as images, invite them straight into a duel or your squad.

👑

Premium & Infinity

Unlimited cards without waiting. For the hungriest brains.

🏙️

City BattlesComing soon

Your city versus the rest. Weekly battles for bragging rights.

…and much more.

05What's inside

History

Science

Psychology

Money

Nature

Space

Technology

Culture

Human Body

Curiosities

Mystery

Mythology & Folklore

Arts & Literature

Music

Movies & TV

Celebrities

Video Games

Sports

Geography & Travel

Food & Drink

06Mini duel

⚔️ Challenge

Can you beat the average player?

How many hearts does an octopus have?

Only ~41% got this. An octopus has 3 hearts — rematch in the app?

*average of Jolt players

Get the app

Jolt is live. Start your first streak.

iPhone? We’ll let you know.

Questions

: Jolt is free. An optional premium unlocks unlimited cards — the daily learning core stays free.
: Jolt is live on Google Play for Android. iOS is next — leave your e-mail above and we will let you know.
: Seven: English, Czech, Slovak, German, Spanish, French and Polish.
: Jolt is intended for users aged 16 and over. Content is general-knowledge and family-friendly, but accounts require the minimum age.
: Cards are sourced and reviewed before publishing, with the source shown on the back of each card.