Decisio uses AI and the same decision science method trusted by NASA to turn complex choices into clear, ranked results. In 10 minutes.
iPhone & iPad · iOS 17+ | On Android or desktop? Use the web calculator.
The same three screens you'll use in the app. Reconstructed from the real UI — try the live web version.
Options scored on the AHP eigenvector weights, clear winner highlighted, with a consistency check on your own judgments.
"Is one criterion more important than another, and by how much?" The Saaty 1–9 scale — what no other decision app does.
You weighted stability at 2× growth — but you're 29 and named "learning fast" as your top goal in the notes. If the big-co role is maintenance work, the score may be flattering the safe choice.
Before you commit, AI argues against your top pick using your actual criteria and scores — not generic pushback.
No spreadsheets. No endless pros-and-cons lists. Just a structured process that works.
Name your choice, add criteria that matter, and list your options. AI can suggest both for you.
Rate pairs of criteria and options side by side. The same method NASA and Boeing rely on for mission-critical calls.
See your options ranked with confidence scores, AI executive summary, and a Devil's Advocate challenge.
Real decision science, enhanced with AI — not another coin-flip app.
The same math NASA, Boeing, and the World Bank use to make high-stakes decisions. Published in thousands of peer-reviewed studies.
Get intelligent criteria suggestions, option ideas, and an executive summary that explains your results in plain language.
AI challenges your top choice before you commit. Surfaces blind spots, risks, and counterarguments you might have missed.
Save recipes and principles from every decision. Build your personal decision-making framework over time.
Track your decision-making accuracy. Rate outcomes as Right Call, Mixed, or Wrong Call and watch your calibration improve.
Share professional decision reports with stakeholders. Full audit trail with criteria weights, scores, and rationale.
Personal AHP rigor isn't right for every job. Here's when it is, and when it isn't.
No account required. No credit card upfront. Just open the app and decide.
3 decisions to get started
7-day free trial on annual plan
The Analytic Hierarchy Process — multi-criteria decision analysis used by NASA Boeing the World Bank Fortune 500 procurement, and in 100,000+ peer-reviewed papers since 1980.
Decisio is a decision-making app for iOS that helps you structure complex choices and rank options on real criteria — not gut feel and not pros/cons lists. It runs the Analytic Hierarchy Process (AHP), the same multi-criteria method used by NASA, Boeing, and the World Bank, in a guided 5–10 minute flow on your phone.
Where most decision-making apps use simple weighted scoring (every criterion treated as equally important), Decisio compares your criteria pairwise on the Saaty 1-to-9 scale and flags contradictions in your own reasoning via a consistency ratio. AI assistance proposes criteria, suggests options, and challenges your top pick as a Devil's Advocate.
Browse the decision-making frameworks for worked examples, or see how Decisio stacks up against other decision matrix apps and templates.
It depends on what you're deciding. For structured personal decisions (job offers, big purchases, relocations) Decisio is the only iOS app implementing real AHP pairwise comparisons with consistency-ratio validation and an AI Devil's Advocate. For team voting a tool like ChoiceMap fits better. For spreadsheet-heavy analysis, Excel or Google Sheets remain flexible. See the full 2026 comparison.
Pros/cons lists treat every item as equally weighted: "has free parking" counts the same as "doubles my salary." A real decision-making app forces you to quantify how much one criterion matters relative to another, then ranks options by total weighted score. That single change usually flips which option actually wins.
A multi-criteria decision analysis method developed by Thomas Saaty in 1977. You compare criteria and options two at a time on a 1-to-9 scale; eigenvector math derives the priority weights; a consistency ratio flags when your own pairwise judgments contradict each other. Used by NASA, Boeing, the World Bank, and Fortune 500 companies for high-stakes calls. Decisio is the consumer-grade implementation.
Yes, for the first 3 decisions with Simple Scoring, all 15+ templates, the full Playbook, and full Outcome Tracking — no ads, no data selling. Decisio Pro ($2.99/month or $19.99/year with a 7-day free trial) unlocks unlimited decisions, AHP pairwise comparisons, AI Devil's Advocate, and PDF/Excel/Markdown export.
Yes. AI runs on-device via Apple Intelligence on iOS 26+ (no data leaves your phone), or you can plug in your own OpenAI API key for cloud generation. Decisions sync via your own iCloud account through Core Data + CloudKit. No third-party server stores your decision content.
Spreadsheets are infinitely flexible but require you to design the scoring model yourself. That's where most people quietly slip back into "I'll just weight things by feel," which defeats the point. A purpose-built decision-making app like Decisio enforces the methodology (pairwise comparison, consistency check, eigenvector priority) so you can't accidentally weight everything equally.
5–10 minutes for a typical 3-options × 4-criteria decision in Simple Scoring mode. AHP pairwise mode adds ~3 minutes for a typical decision (you'll do roughly 6 criterion comparisons and ~12 option comparisons). Most users save the recipe in the Playbook and reuse it for similar future decisions.
Yes. Each decision can be marked Right Call / Mixed / Wrong Call weeks or months later. After 5+ rated outcomes you get a personal Calibration Score — your decision-making accuracy percentage. Recipes (what worked) and Principles (lessons learned) accumulate in the Playbook so future decisions inherit your past judgment.
Free for your first 3 decisions. No account, no card. About 10 minutes per decision.
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