Theo

Theo — an iOS app for Bayesian analysis of anxious thoughts, worries, and decisions

I'm worried that...
I can't decide whether to...
I keep thinking about...

How it works

1

Describe what's on your mind

Type your worry or decision in plain language. No rigid forms — just write naturally like you'd tell a friend.

2

Rigorous evidence gathering

Theo searches the web and asks you targeted questions to build a real evidence base. Evidence gets grouped by dependency so correlated data points don't get counted twice.

3

Real math, not AI hand-waving

A dedicated statistical engine — not the AI — runs the actual Bayesian computation. Confidence caps limit how much any single piece of evidence can sway the result. You can inspect the full reasoning chain and adjust every assumption.

Frequently asked questions

Theo

Turn anxious thoughts into clear answers

Your worries deserve more than a gut feeling.

Download on the App Store