DarkSquares vs All/Some

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

DarkSquares compared with All/Some
Detail	DarkSquares	All/Some
What it does	Progressive blindfold chess training from square recognition to full games	A daily word and diagram puzzle about set relationships
Stage	Not given	Not given
Founded	Not given	Not given
Based in	FR	Not given
Pricing model	Freemium	Free
Pricing	Free: €0 forever with unlimited exercises, games vs AI, and access to levels 1-3. Pro Lifetime: €39 one-time payment for all 7 levels, all 8 AI difficulties, famous games library, endgame training, and intermediate tactics.	Not given
Key features	7 progressive training levels from square colors to full blindfold games Unlimited exercises and games against AI Voice-controlled play in 6 languages Progress tracking and achievement system Cross-device synchronization Famous grandmaster games to replay blindfolded Endgame training module Multiple board visibility modes Tactical puzzles and exercises	Daily puzzle challenges Themed collections across multiple subjects Astronomy Collection Biology Collection Everyday Concepts Collection Progress tracking with account creation
What makes it different	Systematic progression from fundamentals to blindfold mastery, not just a side effect of puzzle training Free tier is genuinely free with no dark patterns or engagement manipulation One-time €39 lifetime payment with no subscription required Built and maintained by a single indie developer actively improving the product Available across web, iOS, and Android with unified account	Free daily logic puzzle focused on set relationships Themed collections across diverse subjects
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)	25 no change since last check	5 no change since last check
Trust Flow (Majestic)	23	8
Citation Flow (Majestic)	31	18
Referring domains (Majestic)	45	29

4 details filled in for both companies.

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