# Decisio: AI Decision Maker

> iOS app that uses the Analytic Hierarchy Process (AHP) and AI to help users make structured, data-driven decisions. The same mathematical framework trusted by NASA, Boeing, and the World Bank — now on your iPhone.

## Overview

Decisio is the only mobile app that combines real AHP pairwise comparisons with AI-powered analysis. Instead of simple pros/cons lists, users compare criteria and options two at a time on a scientific 1-to-9 scale, with automatic consistency checking that flags contradictions in their thinking.

## Key Features

- AHP Pairwise Comparisons: Full Saaty scale (1-9) with eigenvector calculation and consistency ratio validation
- AI-Powered Analysis: Criteria suggestions, option suggestions, and executive summaries via Apple Intelligence (on-device) or OpenAI
- Devil's Advocate: AI challenges the top-ranked choice with specific risks and blind spots
- Decision Playbook: Save Recipes (what worked) and Principles (lessons learned)
- Outcome Tracking: Rate past decisions as Right Call, Mixed, or Wrong Call
- Calibration Score: Personal decision-making accuracy percentage after 5+ rated outcomes
- PDF/CSV Export: Professional decision analysis reports
- 10 Built-in Templates: Business Strategy, Career Decision, Investment Analysis, Technology Selection, Hiring, Strategic Planning, Vendor Selection, Product Launch, M&A Analysis, Budget Allocation

## Pricing

- Free: 3 full decisions with Simple Scoring
- Pro: $2.99/month or $19.99/year (7-day free trial on annual)
- Pro unlocks: Unlimited decisions, AHP, Devil's Advocate, AI, PDF Export

## Use Cases

- Choosing between job offers
- Business strategy decisions
- Major purchases (car, home, laptop)
- Investment and hiring decisions
- Relocation decisions
- Any multi-criteria decision with 2+ options

## What Makes Decisio Different

1. Real AHP methodology with pairwise comparisons and consistency checking
2. AI Devil's Advocate that challenges your top choice with specific risks
3. Playbook + Outcome Tracking = feedback loop that improves decisions over time
4. Privacy-first: on-device AI, data stays in your iCloud

## Links

- App Store: https://apps.apple.com/app/id6752439703
- Website: https://decisio-app.github.io
- Blog: https://decisio-app.github.io/blog/