It features a hover-and-click tree interface that will allow you to build and directly manipulate a decision tree.
It can even do the necessary ICM conversions for tournaments and sit and go's.

StoxEV has a powerful mathematical engine that can calculate your EV results of an entire decision down to the exact EV of each individual starting hand.

All results can be conveniently brought up by hovering over the location in the tree where you want to know your EV.

The hover-and-click tree interface.

Whenever you hover over numbers or decisions in the tree more information on that number will be shown in a popup. The EV of every single starting hand is displayed in a matrix in a popup.

At the bottom of each popup advanced toggles are provided that allow for a wide range of operations.

When you hover over a decision more information is shown on the composition of that player's hand at that point in the tree.

There is also an option to make a graph or table for when you vary one or two numbers (for instance dependence of EV on betsize).

How to read the tree:
The decision tree is made up out of decisions which are broken down into actions. An action is taken under certain conditions.