Basic roll
2d20 + 5 Roll two d20s and add a fixed modifier.
APP_VERSION :: v0.2.5
Math Rocks Dice
The professional dice engine for tabletop RPG players and game masters. Built with cryptographic randomness, encrypted local storage, advanced notation, roll statistics, and a zero-account free-to-play premium loop.
CSPRNG fairness // AES-256-GCM local data // EN · ES · FR · IT · PT // Web · Android · iOS-ready
CORE_CAPABILITIES
Built for precision at the table
Complex Notation
Supports advanced formulas like 2d20h1 + 1d6! + 5. Exploding dice, success pools,
keep/drop mechanics, and Fate/Fudge dice are native to the engine.
Local Privacy
No accounts. No tracking. Favorites, history, settings, and cumulative statistics are encrypted with AES-256-GCM and stored on the local device through IndexedDB.
Live-Session Speed
A custom input flow, saved favorites, persistent history, and multilingual UI reduce friction when the table needs the result now, not after a rules interruption.
SUPPORTED_NOTATION
RPG formulas without hand-waving
Keep highest
4d6kh3 Roll four d6s and keep the three highest.
Exploding dice
10d6! Maximum values trigger additional rolls.
Success pools
5d10>7 Count dice that beat a target threshold.
Fate / Fudge
4df Roll Fate dice with -1, 0, and +1 semantics.
Compounding
2d20!! Exploding dice compound into one die result.
TECHNICAL_SPECIFICATION
The Randomness Engine
Most dice apps rely on ordinary pseudorandom number generators. Math Rocks Dice uses a
Cryptographically Secure Pseudorandom Number Generator based on window.crypto.getRandomValues().
The engine applies rejection sampling to eliminate modulo bias, so every face of every die has the same mathematical probability. No hidden weighting. No weak randomness shortcut. Just transparent probability.
Randomness
[SOURCE] :: WEB_CRYPTO
[BIAS] :: REJECTION_SAMPLING
[PRNG] :: CSPRNG
Storage
[PROTOCOL] :: AES-256-GCM
[ENGINE] :: INDEXEDDB
[MODE] :: LOCAL_ONLY
Data
[ACCOUNTS] :: NONE
[TELEMETRY] :: DISABLED
[HISTORY] :: ENCRYPTED
ROLL_TELEMETRY
Roll Dispersion Statistics
Version 0.2.5 replaces purchase-first Premium with a play-to-unlock pass system: earn XP through active rolling, claim optional rewarded ads, and keep the dice engine unlimited.
New in 0.2.5
Free-to-play Premium Pass, rewarded XP ads, premium-expired recovery modal, phone-only orientation lock, and guarded interstitial cadence.
- Individual Dice mode: per-die percentile distribution. A fair CSPRNG should read flat and uniform.
- Roll Average (CLT) mode: per-formula average percentile. Multi-die rolls naturally form a bell curve.
- Uniform and CLT benchmark modes for visually checking both statistical behaviors.
- 50-bucket roll dispersion histogram across all, d4, d6, d8, d10, d12, d20, dF, and custom dX categories.
HUD_INTERFACE_SHOWCASE
Visual Systems & Layout Clearance
Exploration of the user interface across portrait and landscape screens. Native layouts incorporate precise top clearances for notifications and dynamic clearance for bottom-anchored advertisements.
[ SYSTEM_VIEW :: PORTRAIT_HUD ] 5 SCREENS LOADED // SWIPE_TO_NAVIGATE
00_LAUNCH CSPRNG_LOADED
01_DICE_HUD FORMULA_INPUT
02_STATS_DISPERSION UNIFORM_DIST
03_FORMULA_HELP DICE_NOTATION
04_PREMIUM_PORTAL F2P_PASS
[ SYSTEM_VIEW :: LANDSCAPE_TABLET ] 3 CORES DETECTED // HIGH_DENSITY
TABLET_01_NOTATION WIDESCREEN
Dual-pane formula building and dice-notation help layout.
TABLET_02_STATS WIDESCREEN
CLT (Central Limit Theorem) dispersion statistics histogram view.
TABLET_03_PREMIUM WIDESCREEN
Theme portal and Premium Pass status screen.