Comparison

ClueStars Junior vs MindDuel

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

ClueStars Junior

Features
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Challenge yourself, your friends, family, colleagues, or anyone to see who can guess a series of timed images the fastest. GAME RULES: DUEL Each round consists of a duel between two players. You can either challenge someone or be challenged to a duel. A duel is made up of five images, which both players must guess correctly. Players take turns starting each image, and they can influence the category of images by choosing from a list of options before each round. When it’s your turn, you have one hour to play your round. If you don’t respond within the allotted time, the win will be awarded to your opponent. Once you open the image, you have 30 seconds to submit your answer. Each question has four answer options, and one of them is correct. The faster you answer correctly, the more points you earn. Incorrect answers or no response within the time limit result in zero points. The player with the highest total score in the round wins the duel. You can track statistics for duels against specific players on your profile. TIPS Add friends for easy access and quick challenges in the future. Enable notifications for the best real-time game experience.

About

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/

Screenshots

ClueStars Junior3 screens
MindDuel4 screens

Verdict

The call

The clearest difference is in-app purchases: ClueStars Junior at none against MindDuel's 3. MindDuel's advantage is update cadence (every 3 days vs every 3 months). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. MindDuel sells 3 in-app purchases, starting at $0.49 per month. ClueStars Junior asks for nothing beyond the download.

UpkeepUpdate frequency

ClueStars Junior ships an update every 3 months, MindDuel every 3 days. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

Scorecard2 real differences · 4 level
ClueStars Junior versus MindDuel: the parameters behind the verdict, then further details
ParameterClueStars JuniorMindDuel
PriceFreeFree
Update frequencyEvery 3 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.016.0
Further details — not scored
Size63 MB10 MB
Age rating4+4+
DeveloperShape Labs ABPetter Røisland

In-app purchases

None

ClueStars Junior

No in-app purchases

3 purchases

MindDuel

Subscriptions2
  • MindDuel Premium Monthly$0.491 Month
  • MindDuel Premium Yearly$7.991 Year
One-time1
  • MindDuel Lifetime$1.99

Questions

Is ClueStars Junior free?
ClueStars Junior is free to download, with no in-app purchases.
Is MindDuel free?
MindDuel is free to download, with in-app purchases available.
Do ClueStars Junior or MindDuel have ads?
Neither ClueStars Junior nor MindDuel shows ads.
Which is updated more often, ClueStars Junior or MindDuel?
ClueStars Junior ships an update every 3 months, and MindDuel every 3 days. Most recently, ClueStars Junior was updated on October 27, 2026 and MindDuel on October 28, 2026.

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