USE CASE
The Investment Journal That Challenges You Back
Most journals record what happened. SYNESI records why you believed what you believed, then Sigma helps check whether it still holds.
Beyond the spreadsheet
Notebooks, Google Docs, scattered notes, they capture your thinking once, then go silent. Six months later, you remember you bought the stock but not why. SYNESI replaces that with a structured thesis: ticker, thesis statement, falsifiable assumptions, exit criteria, and confidence level, captured in under 60 seconds.
Assumptions that get stress-tested
Every thesis rests on assumptions. SYNESI breaks them out explicitly so you can track each one. When you run an AI analysis, it pressure-tests those assumptions against your own logic, surfacing overconfidence, blind spots, and unstated dependencies.
A living audit trail
Every status change, edit, and AI analysis is timestamped and stored. Over months and years, you build a personal record of how your thinking evolved, reviewable, honest, and structured for learning.
Automated review prompts
When a stock in your portfolio moves 5% or more in a single day, SYNESI creates a review event and asks: does this change anything? It's not a price alert, it's a conviction check.
7-day free trial: Sigma and all features included. Then $15/month or $99/year.