ChessAtlas vs Zapp Chess
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
ChessAtlas compared with Zapp Chess
| Detail | 
ChessAtlas | 
Zapp Chess |
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| What it does | Free chess opening trainer with spaced repetition
| Quick chess games that start in the middlegame and finish in minutes
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| Stage | Not given
| Not given
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| Founded | Not given
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| Based in | Not given
| IN
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| Pricing model | Freemium
| Free
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| Pricing | Not given
| Not given
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| Key features | - Spaced repetition with FSRS algorithm
- Repertoire builder
- Opening trainer with instant feedback
- Game import from Lichess and Chess.com
- Deviation detection
- Course library with opening courses
- iOS and Android mobile apps
- Multiple language support
| - 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
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| What makes it different | - FSRS algorithm schedules reviews 15-30% more efficiently than SM2
- Automatic deviation detection from Lichess and Chess.com games
- Full repertoire builder in free tier with no course purchase required
| - 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
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
| Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 10 ▲ +1 (up) since last check | 17 ● no change since last check |
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| Trust Flow (Majestic) | 22 | 9 |
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| Citation Flow (Majestic) | 24 | 42 |
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| Referring domains (Majestic) | 34 | 624 |
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4 details filled in for both companies.
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