Zapp Chess vs Crux

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

Zapp Chess compared with Crux
Detail	Zapp Chess	Crux
What it does	Quick chess games that start in the middlegame and finish in minutes	A daily games hub with no ads
Stage	Not given	Not given
Founded	Not given	Not given
Based in	IN	SG
Pricing model	Free	Freemium
Pricing	Not given	Not given
Key features	Games start from curated middlegame positions Win by 2-point material lead or checkmate Games finish in under 3 minutes Play each move on your own time Free app for Android and iPhone No opening theory to memorize Play against real people Free browser version Analysis board with Stockfish Chess clock web tool	Daily puzzle refresh at midnight UTC Friends and leaderboards Sign in with Apple for cross-device progress Restricted version for players under 13 Local storage of streaks and counts
What makes it different	No openings to memorize unlike traditional chess Games decided by tactics and natural talent only Games finish in minutes fitting busy schedules Completely free with no subscriptions or purchases	Variety of game types: word, logic, number, trivia and arcade games No tracking or login required - all progress stored locally New set of games every day Child-safe with restricted features for players under 13
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)	16 +1 (up) since last check	6 +6 (up) since last check
Trust Flow (Majestic)	9	0
Citation Flow (Majestic)	42	25
Referring domains (Majestic)	624	32

5 details filled in for both companies.