MindDuel vs Rival Brains
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
MindDuel
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MindDuel – Brain Training & Knowledge Quizzes MindDuel is brain training and knowledge quizzes for iPhone. Explore 30+ game modes, learn something new and keep your mind sharp. Play at your own pace. Every mode has levels to climb, and you choose the difficulty and how many seconds you get per question. GAME MODES • Knowledge & learning – Weekly news, geography, history, natural science, marine biology, zoology and more • Maps & flags – Recognise countries, find their locations on the map and identify flags • Brain training – Brain teasers, logic, memory and pattern recognition • Math & science – Mental arithmetic, chemistry and physics • Language – Grammar and literature • Entertainment – TV, movies, music, celebrities, art and video games • Sports – General sports knowledge and football • Everyday knowledge – Food and drinks, cars, politics, Christianity and mixed trivia • Pi – How many decimals can you remember? • Decade quizzes – Test your knowledge of the 1960s, 1970s, 1980s, 1990s, 2000s and 2010s • Review – Revisit questions and reinforce what you've learned New content is delivered regularly, keeping your quizzes fresh. A NEW MAP EXPERIENCE Recognise countries, tap where they are and find famous places. The closer you get, the more points you score. QUESTION OF THE DAY Get a new daily question with the Home Screen widget. Answer directly from your Home Screen and keep your daily streak going. STAY SHARP • Continuous progression in every mode, with levels and level tests • A hint for every question • Suggest your own questions – approved ones become part of the game • Daily streaks and reminders • Scoring based on both accuracy and speed • Practice rounds that don't use your daily quota • Sound effects for correct and incorrect answers, configurable in Settings → Appearance PLAY WITH FRIENDS • Turn-based multiplayer – share a link or code to challenge a friend, even if they don't have the app yet • Easy invites – send your invite link; when your friend installs the app and pastes the invite, you become friends automatically • Friends list and activity feed • Leaderboards for friends, local and global • Weekly leagues with promotion and relegation FREE TO PLAY Play every mode for free with up to 100 tasks per day. Upgrade to Premium for unlimited play with no daily quota – a one-time purchase of 19 NOK that lasts forever. No subscriptions. SUPPORT Send feedback from Settings and follow your ticket inside the app. If we need more details, we'll ask in the ticket, and you can reply in the same thread. PRIVACY Sign in with Apple. We never store your precise location – only a coarse radius lookup for the nearby leaderboard. You can delete your account and all associated data from your profile at any time. Data is stored in the EU. PURCHASE & TERMS Premium is a one-time purchase of 19 NOK. Nothing renews and there's nothing to cancel. Privacy Policy: https://mindduel-production-1180.up.railway.app/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Rival Brains
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TWO PLAYERS. ONE PHONE. THAT'S THE WHOLE SETUP. Rival Brains is a 2 player game built for a single screen. Lay the phone flat on the table, sit on opposite sides, and the screen splits down the middle — your half faces you, theirs faces them. Then you go at it. No second device. No accounts. No matchmaking. No internet. Hand over half the phone and you are playing in seconds. WHERE PEOPLE ACTUALLY PLAY IT • Couples waiting for dinner to arrive • Friends at the bar when the conversation dips • Siblings in the back seat • Parent vs kid — and the kid winning • Students with twenty minutes to kill • First dates that need a tiebreaker • Family gatherings, road trips, airport gates Anywhere two people are stuck together with one phone between them. NINE DUELS, ALL WON WITH YOUR HEAD • Riddle Rumble — race to crack the riddle before your rival taps the answer • Quick Maths — mental-math sprints that get meaner every round • Echo — a memory duel: watch the pattern flash, then out-remember them • Odd One Out — three things belong together, one doesn't; spot it first • Sequences — crack the number pattern and nail what comes next • Anagram Attack — unscramble the letters before your rival finds the word • Movie Quotes — name the movie behind the famous line first • Pattern Grid — the classic IQ-test grid: find the picture that completes the pattern • One Line — draw the picture without lifting your finger, both players at once Riddle Rumble, Quick Maths and Echo are free forever. The other six unlock for 24 hours with one short ad, or permanently with a single $4.99 purchase that also covers any duel added later. No reflex spam, no tap races. Every duel is won with your head. BUILT FOR TWO BRAINS AT ONE TABLE • Mirrored halves — each player gets their own upright view • Answers shuffled differently per side, so nobody can copy a finger • Visible reading-time timers — long riddles get longer clocks • The Evener — an openly declared handicap that keeps lopsided rivalries fun • Rivalry Ledger — head-to-head records, streaks, and revenge matches • End-of-night superlatives — who had the Quickest Wit? The Steadiest Hand? FAST ROUNDS, INSTANT REMATCHES A duel runs a couple of minutes. First correct tap takes the point, first to five takes the duel, and the rematch is one tap away. Nobody sits through a long turn waiting for their go. FRESH EVERY GAME NIGHT 170+ riddles and 100+ movie quotes that won't repeat from night to night, plus endlessly generated math, logic, pattern and anagram questions. No two sessions alike. PLAYS WITH NO WI-FI Everything runs on the device. Airplane mode, dead zones, the back of a car — it all works. Most two player games want a second phone, a shared turn, or a sign-up. This one wants a table and someone sitting across from you. No accounts. No internet needed to play. Hand over half the phone and settle it.
Screenshots
Verdict
The clearest difference is ads: MindDuel at none against Rival Brains's shown. MindDuel also leads on update cadence (every 3 days vs fortnightly). On price, in-app purchases, 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. MindDuel sells 3 in-app purchases, starting at $0.49 per month and Rival Brains sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
MindDuel ships an update every 3 days, Rival Brains fortnightly. The most recent releases landed on October 28, 2026 and October 30, 2026 respectively.
| Parameter | MindDuel | Rival Brains |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 days — better | Fortnightly |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Petter Røisland | Proliferaite LLC |
In-app purchases
MindDuel
- MindDuel Premium Monthly$0.491 Month
- MindDuel Premium Yearly$7.991 Year
- MindDuel Lifetime$1.99
Rival Brains
- Rival Unlimited$4.99
Questions
Is MindDuel free?
Is Rival Brains free?
Do MindDuel or Rival Brains have ads?
Which is updated more often, MindDuel or Rival Brains?
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