# Fermi: Daily Guessing Game — Estimate anything in 3 minutes > Daily estimation game that trains reasoning and problem-solving skills. (iPhone/iPad app by ZEYNEP CEREN GEMICI.) - Source: https://appshunter.io/ios/app/fermi-daily-guessing-game/id6811708909 (this page in markdown: same URL + `.md`) - Developer: [ZEYNEP CEREN GEMICI](https://appshunter.io/developer/6804063057) - Category: Games, Puzzle, Trivia - Price: Free - Rating: 4.80/5 from 5 App Store ratings - Age rating: 4+ - Requires: iOS 16.4 · 43 MB - Languages: American English, Dutch, European Spanish, German (Germany), Turkish - Released: 2026-09-20 - Data updated: 2026-10-17 - Monetization: subscription ## What is Fermi? Fermi is a daily game about getting close. Every morning you get three questions nobody can answer off the top of their head. How many baguettes do the bakeries of Paris sell before noon? How many trees are standing on Earth right now? You don't look it up. You break the problem into pieces you already know, follow a hunch, and put a number on it. Then you find out how close you landed. HOW IT WORKS • Three questions. About three minutes. • One number per question — no multiple choice, no second tries. • Your score is the multiple between your answer and the truth. 1x is spot on. Lower is better. • See where your number sits against everyone else who played today. WHY IT'S DIFFERENT Most quiz apps reward what you already memorised. This one rewards how you think. The physicist Enrico Fermi was famous for landing within an order of magnitude of almost anything using nothing but reasoning — how many piano tuners work in Chicago, how much energy a blast released judging by how far the paper scraps flew. That is the skill this app trains, and it gets sharper the more you use it. WHAT YOU GET • A fresh set of three questions every morning • A daily leaderboard, plus weekly and monthly standings • Your personal best and a running history of every round • An archive of past days, open whenever you want another round • The sources behind every answer, so you can see where the number came from • Metric or imperial units, your choice No sign-up, no email address, no ads in the middle of a question. Your first round is free; a subscription unlocks every daily round, the archive and the working behind every answer. Come back tomorrow. There is always another one. Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://fermi.begtools.xyz/privacy Questions or feedback: cytools85@gmail.com ## Key features - Three daily estimation questions - Score based on proximity to the truth - Daily, weekly, and monthly leaderboards - Personal best and round history - Archive of past games - Sources for all answers - Metric or imperial units ## Is Fermi safe? Not enough ratings yet to assess Fermi. ## Is Fermi legit? Fermi: Daily Guessing Game appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Fermi is 65 out of 100 points across 7 verification signals from App Store and developer data. ## Frequently asked questions about Fermi ### What is Fermi? Fermi is a daily guessing game where you estimate numerical answers to challenging questions. It focuses on training your reasoning and problem-solving abilities rather than memorization. ### How does Fermi scoring work? Your score is determined by how close your estimated number is to the actual answer. A score of 1x means you were exactly right, and lower scores are better. ### Can I play Fermi offline? The description does not specify offline play capabilities. However, it mentions a daily set of questions, suggesting an internet connection may be required to receive them. ### What is the pricing for Fermi? Fermi is free to download and play your first round. A subscription is required to unlock all daily rounds, the archive, and the detailed working behind each answer. ### Does Fermi have ads? No, Fermi is ad-free. The description explicitly states there are no ads in the middle of a question. ### What devices does Fermi support? Fermi is available on iPhone and iPad devices. ### How often are new questions released in Fermi? A fresh set of three questions is released every morning, providing a daily challenge for users. ### What is the age rating for Fermi? Fermi has an age rating of 4+, making it suitable for a wide range of players. ## Version history (last 4 releases) ### 1.0.3 — 2026-10-10 New: Play with friends. Start a game, send the code, and everyone answers the same five questions in their own time. Then see who got closest, question by question. New: Hard mode. 20 seconds a question, no calculator. Pure instinct. Fermi now also speaks Turkish, German, Spanish and Dutch. It follows your iPhone's language, or pick one under You > Preferences. ### 1.0.2 — 2026-10-07 Bug fixes and improvements. ### 1.0.1 — 2026-10-06 Bug fixes and improvements. ### 1.0 — 2026-09-21 No release notes. ## Apps similar to Fermi | App | Rating | Price | Category | | --- | --- | --- | --- | | [Alibi Daily Logic Grid](https://appshunter.io/ios/app/alibi-daily-logic-grid/id6787647426) | — | Free | Games | | [Farout - Krillion Trivia Dive](https://appshunter.io/ios/app/farout-krillion-trivia-dive/id6813899322) | 5.0 (1) | Free | Games | | [TimeGuessr](https://appshunter.io/ios/app/timeguessr/id6745130802) | 4.9 (2,666) | Free | Games | | [Puzzlit - Puzzles Made Social](https://appshunter.io/ios/app/puzzlit-puzzles-made-social/id6472233094) | 4.7 (2,220) | Free | Games | | [Connections Game!](https://appshunter.io/ios/app/connections-game/id6476756532) | 4.6 (12,646) | Free | Games | | [Sporcle](https://appshunter.io/ios/app/sporcle/id1572007006) | 4.7 (3,996) | Free | Games | ## More apps by ZEYNEP CEREN GEMICI - [Tarmac: GPS Drive Tracker](https://appshunter.io/ios/app/tarmac-gps-drive-tracker/id6804063055) - [FlipRadar: Thrift Scanner AI](https://appshunter.io/ios/app/flipradar-thrift-scanner-ai/id6808277073) - [Loupe: Watch Identifier, Value](https://appshunter.io/ios/app/loupe-watch-identifier-value/id6809235165) All apps by ZEYNEP CEREN GEMICI: https://appshunter.io/developer/6804063057 ## Related topics [daily guessing game](https://appshunter.io/ios/topics/daily-guessing-game) · [fermo](https://appshunter.io/ios/topics/fermo) · [octagon brain teaser game](https://appshunter.io/ios/topics/octagon-brain-teaser-game) · [guessing games trivia](https://appshunter.io/ios/topics/guessing-games-trivia) · [hemiscope](https://appshunter.io/ios/topics/hemiscope) · [unit circle quiz](https://appshunter.io/ios/topics/unit-circle-quiz) · [super easy calcs](https://appshunter.io/ios/topics/super-easy-calcs) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-17.*