About DecisionBranch
DecisionBranch is a decision tree maker that does the maths. It is built and operated by Tov Studios LLC.
Why it exists
Every drawing tool can draw a decision tree, and none of them will tell you which branch to take. The tools that do the arithmetic are academic and look it. DecisionBranch sits in the gap: write the tree as a few lines of text, see it drawn, and get the expected value of every option, the recommended path, the switch points, the value of information and the risk profile, all recomputed as you type. The maths is the product; the picture is how you read it.
Principles
- The text is the truth. A tree is an outline you can read, diff, paste into an email and version in git. Every view, the canvas, the public page, the embed, the AI builder, reads and writes that same text.
- Never change the maths to make a screen look right. Every number the engine produces is covered by hand-checked tests. If a number looks wrong, it is proved by hand before anything moves.
- Free core value. Building, analysing and sharing a tree are free and need no account. Paid plans add depth for professionals and teams, not the basics.
- No tracking for its own sake. No advertising, no cookies, and analytics that count events without identifying people. See the privacy policy.
Who makes it
DecisionBranch is made by Tov Studios LLC, a small software studio. The decision-analysis engine, the editor and this site are built in the open under the studio's own roof, and the person answering hello@decisionbranch.com is the person who builds it.
The maths, briefly
Decision trees with expected value are standard decision analysis, the method in Raiffa's Decision Analysis (1968) and every operations research course since. DecisionBranch implements rollback (backward induction), sensitivity analysis with switch points found by bisection, the expected value of perfect information per chance node, and the risk profile of the recommended policy. The expected value guide explains each with a worked example.
Get in touch
Questions, bugs, course licences, custom-domain embeds, press: hello@decisionbranch.com. See the contact page for what to include.