Two cards, one hidden value. Guess higher or lower, build a streak, and beat today's Daily Duel — the same puzzle everyone in the world gets, across 11 real-world data categories: populations, animal speeds, mountains, calories, planets and more.
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The Daily Duel, Endless mode and your best streaks are free forever. Pro adds:
Want to try first? Use demo code AV-HIGHER-LOWER-PRO-DEMO to preview every Pro feature on this device.
Practice run — today's counted Daily Duel result is already saved.
📱 Tap ▲/▼ · ⌨ ↑/↓ or H/L to guess
Higher or Lower: Data Duel takes ten seconds to learn:
Every day, one category is picked from a formula based on the date, and the deal order for that category is shuffled using the same date as a seed. That means every player, everywhere in the world, gets the exact same category and the exact same sequence of cards on a given day — so a streak of 14 on the Daily Duel means the same thing whether you played it in Tokyo or Toronto. Your first completed run of the day is the one that counts; play it again afterward and it's labeled a practice run, so you can experiment without touching your saved result. Endless mode uses today's featured category too, but with a fresh, freshly-shuffled order every time you play.
Free play covers today's featured category in Daily Duel and Endless mode; Pro unlocks all of them, any time, plus Mixed mode which draws a fresh matchup from a different category each round.
| Category | Prompt | Example pair |
|---|---|---|
| Country population | Which country has more people? | India vs. Japan |
| Country area | Which country covers more land? | Russia vs. Mexico |
| City population | Which metro area has more people? | Tokyo vs. London |
| Animal top speed | Which animal is faster? | Cheetah vs. Ostrich |
| Animal lifespan | Which animal typically lives longer? | Galapagos tortoise vs. Lion |
| Animal weight | Which animal weighs more? | Hippopotamus vs. Horse |
| Mountain height | Which mountain is taller? | K2 vs. Mont Blanc |
| River length | Which river is longer? | Nile vs. Danube |
| Building height | Which building is taller? | Burj Khalifa vs. Taipei 101 |
| Planet & moon diameter | Which world is bigger? | Jupiter vs. Earth's Moon |
| Food calories | Which food has more calories per 100 g? | Avocado vs. Banana |
All figures are drawn from general knowledge of widely published, public reference data — the kind of numbers that appear consistently across national statistics offices, UN agencies, NASA fact sheets, and standard nutrition and wildlife references (UN World Population Prospects, national census and area figures, NASA Planetary Fact Sheets, USDA-style nutrition tables, and commonly cited zoology, mountaineering and hydrology references). No proprietary or copyrighted ranked list was copied. Every value is rounded to roughly 2–3 significant figures to avoid false precision, and figures represent typical or recent public estimates that will drift over time — populations grow, records get broken, buildings get built taller. They're meant to be broadly correct and recognizable for a trivia game, not a live feed. Figures are rounded reference estimates for a trivia game, not authoritative data.
The core game is free forever: the Daily Duel that everyone shares, Endless play in today's category, your best streak per category, a shareable result card, and full keyboard and touch controls. The one-time US$5 Pro unlock adds all 11 categories on demand, Mixed mode, a custom deck builder for your own trivia, a 30-day history calendar, and an optional Hard mode timer for players who want the extra pressure.
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Yes, for the Daily Duel. Today's featured category and the exact deal order are both generated from today's date, so every player worldwide sees the same matchups in the same order. Endless and Pro category runs are randomized fresh each time you play.
Any pair whose values sit within 2% of each other relative to the larger value. Because every number is a rounded reference estimate, a gap that small could plausibly flip which one is actually higher — so the game skips those pairs and deals the next card instead.
No — every figure is a rounded reference estimate for a trivia game, drawn from widely published public data. It's meant to be broadly correct and recognizable, not a live feed or authoritative reference.
Yes, with Pro. Name a deck, pick a unit and number format, and add up to 60 of your own name/value pairs — sports stats, trivia, anything with a number. It's saved on your device and playable like any other category.
Yes, after the first load. All 11 categories are embedded directly in the page — nothing is fetched — and your streaks, history and settings are stored only in your browser's localStorage.