Fermi: Daily Estimation Quiz

Number guessing trivia game

Free · Designed for iPad. Not verified for macOS.

October Streak Hunt is on: play 7 days in a row before October ends to earn the One Week badge. Seven new questions every morning at 10:00 (Turkey). Seven questions a day, one guess each. No googling: just back-of-the-envelope maths, good assumptions and a bit of intuition. Fermi is a daily estimation game. We ask questions you can't know by heart but can reason your way to: how many people in Turkey are named Mehmet? How many ships passed through the Bosphorus in 2025? How many simits laid end to end would reach the Moon? The game is in Turkish, with questions about Turkey and the world. HOW TO PLAY • Seven new questions every morning at 10:00 (Turkey time): everyday life, places and history, science and numbers. • Type your guess and lock it in. One guess per question. • See the answer right away, scored out of 100: spot on is 100, double or half is 85, ten times off is 50. • Guessing too high or too low counts the same. Your daily score is the average. EVERY ANSWER HAS A STORY • Napkin maths shows how you could have estimated it, step by step. • Every answer comes from official statistics or a reliable source, linked under the question. • See where your guess landed among everyone else's. COMPARE, SHARE, COLLECT • Pick a nickname and climb the daily leaderboard. • Share your result as a card or an emoji grid. • Keep your streak alive and collect 11 badges. • Your profile shows the last 14 days, your strongest topics and how close your answers were. RECORD YOURSELF • Record yourself while you guess: your face on top, the question and your score below, ready for Reels, TikTok and Shorts. • Your face is centred automatically; drag and zoom to adjust it. Voice-only works too. Built-in calculator and scratchpad, archive of past days, optional daily reminder, dark mode and VoiceOver. No account, no email, no ads, no tracking.

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The developer, AppFusion Labs, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

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Information

Provider
APPFUSION LABS, LLC
Size
5.4 MB
Category
Trivia
Compatibility
Requires iOS 18.0 or later.
  • iPhone
    Requires iOS 18.0 or later.
  • iPad
    Requires iPadOS 18.0 or later.
  • Mac
    Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 2.0 or later.
Languages
Turkish
Age Rating
4+
Copyright
© 2026 APPFUSION LABS, LLC
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