Which hand ?? vs Mono
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.
Mono
A minimalist puzzle game where players aim to reduce the number of stones on a board to a single one. Stones can jump over adjacent stones, removing the jumped stone. This strategic elimination continues until only one stone remains.
- Single stone objective
- Jump over stones to eliminate
- Vertical and horizontal jumps
- Minimalist design
- Brain-training gameplay
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This is a puzzle game where the goal is to make the number of stones (black circles) on the board just one. Each stone can jump over another stone next to it in the vertical and horizontal directions. The stone that is jumped over disappears, reducing the number of stones on the board by one. Keep doing this until there is only one stone left on the board.
Screenshots
Verdict
The clearest difference is rating: Mono at 5.0 against Which hand ??'s 2.8. Mono also leads on update cadence (every 4 days vs fortnightly). Which hand ??'s advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, 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.
Mono holds the better App Store score, 5.0 against 2.8. Both are backed by a comparable volume of ratings — 4 and 1 respectively.
Which hand ?? ships an update fortnightly, Mono every 4 days. The most recent releases landed on October 11, 2026 and October 20, 2026 respectively.
| Parameter | Which hand ?? | Mono |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (4 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 4 — better | 1 |
| Update frequency | Fortnightly | Every 4 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 11.4 — better | 13.4 |
| Further details — not scored | ||
| Size | 26 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Tomohiro Yamashita | Tomohiro Ichiba |
In-app purchases
Which hand ??
No in-app purchases
Mono
No in-app purchases
