Master chess through legendary games by replaying iconic positions and testing your calculation against the engine
Free online 3D dice roller with realistic physics simulation
Stage
Startup
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Founded
2026
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Based in
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Pricing model
Freemium
Free
Pricing
Player plan: $4.99 per month or $50 per year. Yearly billing saves 16% and works out to $4.17 a month. Includes unlimited positions, record and export, 1080p quality, and basic AI analysis. 30-day money-back guarantee.
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Key features
Replay iconic chess positions from legendary games
Test calculation against AI engine
Challenge friends with shareable links
Compare continuation against best engine line
Game recording and export
Basic AI analysis
1080p quality output
Play against engine from any position
Curated library of historic positions
Free position challenges without account
Physics engine simulates realistic dice bouncing and settling
Hold button to charge bigger throws
Shake phone to roll dice
Double-tap to lock dice for rerolls
18 material styles including crystal, opal, and galaxy
Polyhedral dice D4 to D100 for RPGs
Create custom dice with text, emoji or photos
Works offline after first visit
Roll history saved locally on device
What makes it different
Play from the exact moment of legendary games, not just study them
Designed for pausing chess videos to calculate positions
Step into the shoes of chess legends at critical game moments
Compare your moves directly against engine analysis
Built by an indie hacker solving a personal chess problem
Realistic physics simulation with random spin and natural settling
No sign-up, no download, works in any browser
Works in 11 languages globally
Privacy-first design with data staying on your device
ReplayChess
3DRoll