Judgment, measured.

The decision ledger for people who can't afford to repeat the same mistakes.

decia — decision ledger
Active Prediction

Series A closes by Q2

Pending
0%Your confidence100%
75%
47Predictions
72%Calibration
+12%Improvement
Calibration over time↑ Trending up

The problem with how you decide

Smart people repeat the same judgment errors for decades because they have no feedback loop.

01

You think through it

But don't write it down

No record of what you actually believed

02

Months pass

You forget what you actually believed

Memory reconstructs a convenient narrative

03

You tell yourself stories

"I always knew that would happen"

The feedback loop never closes

You never learn where your judgment fails.

How Decia works

A closed loop between belief and outcome. No advice. Just accountability.

1

Record

Log what you believe before you decide. Probabilities. Assumptions. What you're trading away.

2

Challenge

Decia stress-tests your assumptions against base rates, similar decisions, and your own blind spots.

3

Track

Watch your confidence evolve. See assumptions erode. Get early warning signals before outcomes force clarity.

4

Learn

When outcomes resolve, see exactly where your judgment succeeded or failed. Find patterns across decisions.

Seamless Integration

Your decisions, everywhere

Capture predictions from the tools you already use. Voice, chat, or direct integration — Decia fits into your workflow.

Connect your tools

Notion
Slack
Asana
Airtable
Linear
ClickUp
Miro
Figma
Open APIBuild custom integrations

AI-powered capture

Decia AIVoice & chat assistant
Active
Speak or type your prediction...

Just speak your prediction naturally — Decia understands context, confidence levels, and timeframes.

Built for high-stakes decisions

For people whose judgment directly impacts outcomes.

Founders

  • Hiring decisions
  • Feature priorities
  • Funding timing
  • Pivot or persist

Investors

  • Deal decisions
  • Portfolio allocation
  • Exit timing
  • Follow-on bets

Product Teams

  • Launch predictions
  • Roadmap bets
  • User behavior calls
  • A/B test outcomes

Consultants

  • Client outcomes
  • Project estimates
  • Strategic recommendations
  • Market calls

Builders

  • Side project viability
  • Tech stack choices
  • Launch timing
  • Growth predictions

Small Teams

  • Group predictions
  • Belief alignment
  • Shared accountability
  • Collective learning

What Decia reveals

The gap between what you believed and what happened.

YOUR BELIEFREALITYDELTA
Upside0%
55%
23%
Base0%
35%
54%
Downside0%
10%
23%

PATTERN DETECTED

Systematic overconfidence in upside scenarios across 12 decisions.

Your judgment is your edge.

Make it visible.

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