Chessmate vs 1600.now

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

Chessmate compared with 1600.now
Detail	Chessmate	1600.now
What it does	Chess opening trainer with spaced repetition and board recall	Free SAT prep with over 8,000 practice questions, timed tests, detailed explanations, and no signup required
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Free
Pricing	Free download with one opening course fully free; additional courses available through Chessmate Premium subscription (specific pricing not stated on website)	Not given
Key features	123 curated opening courses Study mode with move-by-move notes Spaced repetition review schedule Challenge mode for recall from memory Tactical puzzle training Free beginner opening guides Free chess tools and opening explorer Progress tracking with Puzzle Rating and streaks	36 full-length curated practice tests Detailed step-by-step answer explanations SAT score calculator Vocabulary review tools Filter by difficulty, topic, and progress Optional account for cross-device progress sync Timed practice modules following official SAT format
What makes it different	Learn on the board instead of through videos or books Practical repertoire focused on lines you actually face Curated courses checked against multiple opening sources One full course free to try before paying	Completely free with no paywall or locked features Original questions following official SAT blueprint No signup required to access content Built by a student developer
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)	13 −2 (down) since last check	25 no change since last check
Trust Flow (Majestic)	23	5
Citation Flow (Majestic)	24	24
Referring domains (Majestic)	54	15

4 details filled in for both companies.

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