ChessAtlas vs Birth Year Battle
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 Birth Year Battle
| Detail | 
ChessAtlas | BY
Birth Year Battle |
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| What it does | Free chess opening trainer with spaced repetition
| Not given
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Freemium
| Freemium
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| Pricing | Not given
| Free to join with free daily Power and recruitment rewards. Optional paid Power packs available outside recruitment phase.
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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
| - Free daily Power that refreshes each day during battle
- Attack rival years to reduce their health
- Defend your year's health
- Captain role to lead recruitment
- Recruitment rewards for bringing new verified players
- Elimination system where zero health means removal
- Season Champion status with bonus Banked Power for next season
- Optional paid Power packs for additional resources
- Share team cards to recruit
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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
| - Birth year becomes your permanent team with no choice
- Free to play with optional purchases, no mandatory spending
- Captains get up to 100 new recruit rewards versus 10 for regular players
- Personal stakes where friends become rivals based on birth year
- Season progression with qualification phase before live battle
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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
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 10 ▲ +1 (up) since last check | 19 ● no change since last check |
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| Trust Flow (Majestic) | 22 | 22 |
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| Citation Flow (Majestic) | 24 | 10 |
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| Referring domains (Majestic) | 34 | 54 |
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3 details filled in for both companies.
More alternatives to ChessAtlas More alternatives to Birth Year Battle