Janken

Janken

By Yanis KERRIOU

Janken is a mobile game that challenges users to play rock-paper-scissors against their iPhone. The app incorporates a time-pressure mechanic where the referee reduces the player's remaining time as they achieve consecutive wins.

Overview · Full Intel report in progress

The App DNA

What makes this app unique?

For Casual gamers looking for a quick, reflex-based challenge.

What does it look like?

Key features

Rock Paper Scissors Gameplaystandard

Users compete against the iPhone in classic rounds of rock-paper-scissors.

Dynamic Time Constraintstandard

The referee decreases the player's remaining time as they successfully win rounds, increasing the difficulty.

How much does it cost?

free

Velocity

See all version history

Who built it?

Yanis KERRIOU

4 apps tracked · Games

Toss itToss itAirstarAirstar1000 km/h1000 km/h
Explore the full publisher profile

User Sentiment

What do users think recently?

How are ratings & reviews evolving?

App Store
0.00 · 0

Not enough recent reviews to extract reliable themes yet.

Read the full review analysis

Competition

Competitive landscape for Janken

How's the Games market?

The rivals identified

The Analyst's Read

Key takeaways for Janken

Where is it heading?

Bottom line

Janken is a minimalist, reflex-based game that adds a time-pressure mechanic to the traditional rock-paper-scissors format.

Report last updated

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with automated quality gates, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by Janken, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “Janken Intelligence Report.” Updated May 9, 2026. https://marlvel.ai/apps/janken

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