| What it does | A one-button timing game where you tap the pulse as it reaches each station
| Video discovery platform curating YouTube talks recommended by Hacker News community
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| Stage | Not given
| Startup
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| Founded | Not given
| 2026
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| Based in | GB
| Not given
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| Pricing model | Not given
| Freemium
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| Pricing | Not given
| Free plan with basic browsing and watch list features. Paid credits for advanced features: $5.00 for 23,000 credits (one-time), $15.00 for 81,000 credits (one-time), or $29.00 for 174,000 credits (one-time). Monthly subscription option at $15.00 for approximately 810 runs at 100 credits each. Credit
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| Key features | - Three difficulty levels (Easy, Standard, Hard) with different timing windows and speed progression
- Accuracy-based scoring with multipliers for clean runs
- Unlockable chain colours at score milestones (12,000, 30,000, 60,000, 120,000 points)
- Calibration tool to adjust timing for device-specific delays
- Offline gameplay with optional advertisements between runs
- Separate score tables and achievements for each difficulty level
- Adjustable music and sound effects independent of phone volume settings
| - Daily mix: date-based shuffle weighted toward videos recommended across multiple months
- Topic filters across programming, mathematics, science, design, history and 30+ more categories
- Video length filters: under 20 minutes, 20–60 minutes, and 60 minutes or longer
- Local watch list and watched history with no account required
- Video summaries and Hacker News recommendation counts with source context
- Search across titles, creators, subjects, and phrases
- Video Q&A: ask AI about current scene or whole video on supported videos
- Learning packs with video guides, exercises, worked answers, and AI tutoring
- Clean pagination-based grid interface without endless scrolling feeds
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| What makes it different | - Pure timing-focused gameplay with no steering, aiming or second chances within a run
- Progressive difficulty that narrows the timing window and accelerates the pulse as chains extend
- Platform-agnostic implementation available on iOS and Android
| - Open dataset of 6,454 videos from 2007–2026 with 39,834 labeled Hacker News comments
- Browsing with context: summaries and recommendation counts rather than view counts alone
- Simple, focused interface prioritizing video discovery over endless feeds and notifications
- Local storage for watch history and preferences—no syncing or data collection across devices
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 4 ▲ +1 (up) since last check | 13 ● no change since last check |
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| Trust Flow (Majestic) | 11 | 7 |
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| Citation Flow (Majestic) | 13 | 23 |
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| Referring domains (Majestic) | 4 | 16 |
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Echo Chain Rhythm