Fermi Poker vs 321
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Fermi Poker
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How many dentists work in the United States? Hard to know exactly, but everyone can make a more or less informed guess. You answer with a range, not a single number. Then the round plays out like a poker hand: fold if you don't trust your guess, raise if you do, and try to work out whether the confident player across the table actually knows something. The winner is whoever has the narrowest range that still contains the actual answer. A wide range almost always contains the answer, but a tighter range that also contains it beats you. Go narrow and you beat the whole table... as long as the answer doesn't land outside your range. After a few rounds you notice how often you were completely sure and yet wrong. That is part of the game and makes you understand the limitations of your knowledge. WAYS TO PLAY - Live games against real people - Tournaments and a weekly leaderboard - AI Arena, solo practice against bots - Private rooms for friends, with invite links and QR codes - Voice chat and emotes at the table - Seasonal events with special question decks QUESTIONS BY PLAYERS There is a community library of question sets: movie numbers, geography, football, space, anything countable. See what other people are playing this week, or write your own set and share it. GETTING BETTER - A short survey that shows how your sense of "probably" compares to other players - A prediction book where you write down forecasts and watch your calibration curve build over time - Stats on whether the things you were 90 percent sure about were actually right 90 percent of the time FREE TO PLAY Coins are play money. You earn them by playing and they never cost real money. Gems will only let you buy cosmetics like emotes and avatars. Nothing you can buy makes your guesses better. Good with friends who like to argue about numbers.
321
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Two clubs appear on the screen. The first player to name a footballer who has played for both scores a point. Reach 3 points first to win. That’s it. 3 2 1 is an online football trivia competition where you test your knowledge against real opponents. In regular matches, you face another player live. In the Duel of the Day, you can compete on a hidden daily matchup without waiting for an opponent. HOW TO PLAY • Create a room or join an open room • Choose your game mode • Enter a footballer who matches the connection shown each round • The first correct answer scores • Reach 3 points first to win the match • Each round lasts 30 seconds; if nobody finds an answer, a new question begins 3 DIFFERENT GAME MODES CLUB × CLUB Two clubs are shown each round. Find a footballer who has played for both before your opponent does and take the point. NATIONAL TEAM × CLUB A national team and a club are shown. Enter a footballer who represented that national team and also played for the displayed club. National-team and club selection turns alternate between players, and the starting player changes in a rematch. FIVE SHIRTS Five clubs appear on the screen. When it is your turn, enter a footballer who has played for as many of those clubs as possible. You score one point for each matching shirt. A footballer cannot be used twice, and the player with the highest score after all answer slots are completed wins. 12 LEAGUES, 3 DIFFICULTIES Play with clubs from the Süper Lig, Premier League, LaLiga, Serie A, Bundesliga, Ligue 1, Eredivisie, Liga Portugal, Jupiler Pro League, Greek Super League, Russian Premier League and Ukrainian Premier League. Focus on a single league or mix them all together. Easy difficulty features famous clubs with at least 6 shared players. On Hard, every club can appear and you may have only 3 possible answers. Choose the level that fits you. DUEL OF THE DAY A new hidden club pairing opens every day. The clubs remain hidden until you enter, and every player gets only one attempt. Complete your score, earn +25 RP, add discovered footballers to your Discovery Book and see your position on the global or friends leaderboard. MONTHLY LEAGUE Every win moves you higher in the monthly standings. When the month ends, the top three players are crowned, and the champion receives a permanent rank badge on their profile. Everyone starts again from zero at the beginning of each month. RANKS AND STATISTICS Climb from Bronze to Diamond, build winning and daily streaks, and unlock achievements. Track your matches, win rate, average answer time, most frequently found footballers and favorite club pairing from your profile. PLAY FOR FREE Play 10 matches free every day with no advertisements. If you want to play more, you can purchase additional match packs that never expire or subscribe for unlimited monthly play. Purchases never change the rules, question difficulty or your chance of winning. Rankings depend entirely on the footballers you know. If you have a promotional code, enter it on the purchase screen to unlock unlimited play for the code’s duration. SUBSCRIPTION INFORMATION Unlimited Play – Monthly is a one-month auto-renewing subscription. While your subscription is active, an opponent joining a private room you created can play without using one of their own match credits. Payment is charged to your Apple ID when the purchase is confirmed. The subscription renews automatically unless canceled at least 24 hours before the end of the current period. The renewal fee is charged within 24 hours before the current period ends. You can manage or cancel your subscription at any time from Settings → Apple ID → Subscriptions. Additional match packs are one-time purchases. They never expire and are used after your free daily matches have been consumed. Terms of Use: https://mustafakuk.github.io/terms/game321.html Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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Verdict
The clearest difference is in-app purchases: Fermi Poker at none against 321's 3. 321's advantage is update cadence (every 3 days vs weekly). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. 321 sells 3 in-app purchases, starting at $8.99 per month. Fermi Poker asks for nothing beyond the download.
Fermi Poker ships an update weekly, 321 every 3 days. The most recent releases landed on October 24, 2026 and October 17, 2026 respectively.
| Parameter | Fermi Poker | 321 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.4 | 16.4 |
| Further details — not scored | ||
| Size | 84 MB | 39 MB |
| Age rating | 12+ | 12+ |
| Developer | Daniel Fetz | MUSTAFA KUK |
In-app purchases
Fermi Poker
No in-app purchases
321
- Unlimited Play - Monthly$8.991 Month
- 5 Match Credits$1.99
- 20 Match Credits$3.99









