Which hand ?? vs Math Stan
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Which hand ??
A simple game designed to test your reaction time and cognitive skills. Players must quickly select the correct hand shown on the screen. It's a straightforward challenge for quick thinking.
- Quick reaction test
- Hand selection gameplay
- Brain training challenge
- Simple interface
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Just choose left or right.
Math Stan
Test your math speed in a timed competition against players worldwide. Answer as many questions as possible in 15 seconds, but beware of point deductions for incorrect answers. Climb the international leaderboard to prove you're the top genius.
- Timed math challenges
- Global leaderboard
- Point deduction for errors
- Fast-paced gameplay
- Competitive math testing
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What if the world's top genius was living among us, but no one even knew? Could it be one of your friends? Could it be you? Let's find out once and for all in a worldwide competition of Math Stan! When the timer starts, you get 30 seconds to answer as many questions as possible. Key in the correct answer, and you gain a valuable point and extra time. But be careful, my friend. If the incorrect answer is tapped, you will receive the dreaded ONE POINT DEDUCTION! Can you handle this pressure? Some say the timer is too fast. Others say the competition is too intense. Most say the frantic music isn't really conducive to mathematical concentration. MATH STAN! GAME MODE • The longer you go, the harder it gets — easy sums warm you up, then bigger sums and subtraction, then multiplication and division, and finally a bank of "extreme" brain-benders (squares, cubes, decimals, and monster-sized sums). • Every game you finish permanently earns you a sliver of extra starting time. Grind daily to build your advantage. • Claim your spot on the Worldwide Leaderboard, ranked by Highest Scores and Longest Streaks! PRACTICE MODE • No clock. No penalties. Just you and the numbers. • Star the problems you've learned, shuffle the deck, and filter by level. AND MORE • Game stats to track your progress over time. • Lots of customizable settings: Light Mode / Dark Mode, Fonts, Sensei Mood, Haptic Feedback, and more. • Optional: Sign in to save progress and sync across devices. Made with love. Math Stan has zero ads and will always be 100% free. Enjoy!
Screenshots
Verdict
The clearest difference is rating: Math Stan at 5.0 against Which hand ??'s 2.8. Math Stan also leads on update cadence (every 5 days vs fortnightly). Which hand ??'s advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, ratings volume, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.
Math Stan holds the better App Store score, 5.0 against 2.8. Both are backed by a comparable volume of ratings — 4 and 2 respectively.
Which hand ?? ships an update fortnightly, Math Stan every 5 days. The most recent releases landed on September 25, 2026 and October 8, 2026 respectively.
| Parameter | Which hand ?? | Math Stan |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (4 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 4 — better | 2 |
| Update frequency | Fortnightly | Every 5 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.4 — better | 15.0 |
| Further details — not scored | ||
| Size | 26 MB | 78 MB |
| Age rating | 4+ | 4+ |
| Developer | Tomohiro Yamashita | deLily Apps, Inc. |
Customer experience
Which hand ??
Math Stan
In-app purchases
Which hand ??
No in-app purchases
Math Stan
No in-app purchases
Questions
Is Which hand ?? free?
Is Math Stan free?
Which has better reviews, Which hand ?? or Math Stan?
Do Which hand ?? or Math Stan have ads?
Which is updated more often, Which hand ?? or Math Stan?
Other comparisons
