Collaborative decision-making — frictionless, encrypted, and built for the modern web.
v1.6 · 2026Endless chat threads. Pros and cons buried in group chats, emails, or Slack messages nobody can find later.
Privacy concerns. Sensitive decisions shared through platforms that scan content or require you to hand over your data.
Friction kills participation. Heavyweight tools require sign-ups, installs, and onboarding — most people don't bother.
Decide-O-Mat is a zero-friction collaborative decision tool: create a decision, share the link, let your group add arguments and cast votes — no account needed.
Post your question and instantly get a shareable URL. No setup.
Participants add arguments for and against. Arguments are attributed to the person who wrote them.
Upvote and downvote individual arguments. Net scores show what the group actually values.
End with a structured vote — should we do it or not?
Live score updates via Firestore. See the consensus form as it happens.
Capture and share the final result as a visual summary.
Enter a question on the home page. The decision is encrypted with a key stored only in the URL hash — invisible to the server.
Send the URL to anyone. They open it, enter a display name, and start adding pros and cons — no account required.
Arguments are voted on in real time. Cast the final Yes / No vote, close the decision, and export the result.
The encryption key lives in the URL fragment (#…). It never reaches the server — only people with the link can read the content.
Questions, arguments, and votes are encrypted client-side using the Web Crypto API.
The URL itself is the access credential. Share it to grant access; revoke access by not sharing it.
Full account deletion, no third-party trackers, data stored in EU (europe-west4).
Firebase Auth with Google or Email. Magic links let signed-in users reclaim decisions across devices.
React 19 · Vite · React Router · react-i18next · CSS Modules · Web Crypto API
Google Cloud Functions (Node.js 20) · Firebase Admin SDK · Stateless & serverless
Cloud Firestore (real-time, NoSQL) · Firebase Hosting · Google Cloud App Hosting (CDN)
GitHub Actions · Vitest · Playwright E2E · ESLint · Auto-deploy to Staging & Prod
Create, share, add arguments, vote, view results, export image, close decisions, final Yes/No vote.
Display names, Firebase Auth (Google + Email), anonymous identity, magic link device transfer, My Decisions page, profile management.
Dark design system, Figma token architecture, full responsive redesign of all pages, i18n (EN/DE).
Real-time participant list, notification toggles, owner badges.
Choose open vs. private at creation time, participant access management, owner-only close.
3+ options each with their own pros/cons. Ranked-choice voting.
Where to eat, which movie to watch, what holiday to book — decide together, fast.
Tech stack choices, hiring decisions, project direction — structured reasoning, not gut feel.
Sensitive personal or business decisions that you don't want stored on a third-party server in plain text.
Core value: The tool gets out of the way. Open a URL, contribute, decide. No sign-up, no onboarding, no friction.
Structured. Private. Zero friction.
The democratic way to make group decisions.
Built by Antigravity — 2026