FlowDice

Fast, calculator-style dice roller for TTRPGs. No 3D animations, no skeuomorphism — just roll. Rails + Hotwire, PWA, with Hotwire Native shells planned. Named by Xander.

Key Files

• FlowDice — What it is, tech stack, origin, current status
• Roadmap — Phase plan (spec → development → native)
• Architecture — Technical architecture

Specification

Specification/ — Dice mechanics and notation:

• Notation Spec — Full dice notation language
• Flows — Core interaction flows
• Crit Mechanics, Normal Crit, Perkins Crit
• Exploding Dice, Reroll Mechanic
• Keep Highest and Lowest
• Success and Failure Counting
• Fate Dice, Percentile Pair, d% vs d100
• Custom Face Values, Named Parameters
• Natural and Total Triggers, Custom Sound Effects

Interface

Interface/ — UI design:

• Calculator UI, UI Reference
• Text Input, Natural Language Input
• Roll History, Favorites
• Template Library, Characters
• Human-Readable Explanations

Platform

Platform/ — Distribution targets:

• PWA — Primary offline-capable web app
• Hotwire Native — iOS/Android shells (Phase 3)
• MCP Server, Discord Bot
• Android Auto, Hotwire Desktop Idea

Reference

• CritDice — Inspiration (removed from Play Store)
• Custom Skill System

Maturity

Stage: Specified, pre-development. The notation language, interaction flows, UI design, and platform targets are all documented. No code has been written. The spec is thorough enough to build from — the gap is simply that building hasn’t started.