Playdeck24 vs ChimpTest

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Playdeck24 compared with ChimpTest
Detail	Playdeck24	ChimpTest
What it does	Free browser games playable in one tab, no downloads needed	A free memory game inspired by Ayumu the chimpanzee at Kyoto University
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Free	Free
Pricing	Not given	Not given
Key features	Daily leaderboards with verified scores Shared seeds for fair play Soft currency earned only through play Local progress storage Mobile and desktop playable No ads before first game 60 fps performance	Progressive levels that add numbered squares Flash window shrinks as difficulty increases Three-strike game over system Local browser storage of scores Challenge links with shared level difficulty Customizable flash speed via URL parameter
What makes it different	Play directly in your browser with zero downloads or account setup required All players face identical daily challenges for fair competitive scoring	Based on genuine peer-reviewed research from Kyoto University's 2007 Ayumu experiment No account, no download, no personal data collection Includes detailed educational articles about the original experiment and memory science
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	6 no change since last check
Trust Flow (Majestic)	19	6
Citation Flow (Majestic)	19	20
Referring domains (Majestic)	7	3

4 details filled in for both companies.