Top 7 Decision Analysis Tools

PrecisionTree is a long-established decision tree add-in for Excel: people were already reviewing it in 1996. It builds trees and influence diagrams on the worksheet and rolls them back. Its reports include risk profiles, policy suggestions, decision tables, two-way sensitivity, tornado and spider charts, Bayesian revision and utility functions.

The thing to know before you shortlist it: you can’t buy it on its own. Lumivero’s web shop lists it only as part of the DecisionTools Suite, with @RISK, StatTools, NeuralTools and Evolver, at €3,680 a year for Professional or €4,790 for Industrial (shop.lumivero.com, retrieved October 2026).

If you want the simulation engine too, that can be good value. If you only wanted decision trees, you are buying five products to get one.

On value of information, be precise. PrecisionTree’s documentation describes no such feature. Its help site has pages on sensitivity analysis, policy suggestions and decision tables. But search it for “value of information”, “EVPI” or “perfect information” and you find nothing.

What Lumivero offers instead is a webinar, Introduction to Decision Analysis Using PrecisionTree: Measuring the Value of Information, that shows how to build the comparison by hand as a second tree. The technique works. It just isn’t a report from the tree you already have.

DPL, from Syncopation Software, is a standalone decision analysis application built for large, formally structured problems. Its signature is the dual view above: the same model as a compact influence diagram and as the decision tree it implies.

It computes value of information and value of control in every edition, does Bayesian revision, and draws one-way and two-way “rainbow” diagrams that mark where the optimal policy changes. Its tornado analysis runs to eleven help topics. It links to spreadsheets, and can convert a spreadsheet model to its own language for speed, but the model itself lives outside Excel.

Price: $1,495 for a perpetual Professional licence and $1,995 for Enterprise (syncopation.com order page, retrieved October 2026). Two things are easy to miss. Portfolio analysis is a separate product at $8,995. And the licence includes 60 days of support; after that, maintenance runs from $295 to $1,795 a year, depending on the edition.

Analytica takes a different route: influence diagrams rather than trees, with hierarchical models you can expand and collapse. For large problems with many linked variables, that scales much better than a tree, which grows exponentially with every node you add.

It handles uncertainty with Monte Carlo simulation throughout and reads and writes Excel through built-in spreadsheet functions. Version 7.0 shipped in January 2026, so it is actively developed.

The trade-off is the paradigm itself. Decision trees aren’t native: the vendor’s documentation says Analytica “uses an influence diagram paradigm instead”, and trees must be encoded by hand.

One feature is easy to overlook: the free edition has no time limit and opens and runs existing models of any size. The cap of about 100 objects applies to models you create, not models you read. So a reviewer can download it and open your model for free.

Price: free; $1,000 per user per year for Professional; $2,000 for Developer; $4,000 for Optimizer (analytica.com pricing plans, retrieved October 2026). Subscription only: no perpetual option is listed.

TreeAge Pro is built for health economics. If you are building a cost-effectiveness model, a Markov model of disease progression, or anything headed for a health technology assessment, it is the tool reviewers in that field will expect.

It treats Markov models, microsimulation, partitioned survival analysis and probabilistic sensitivity analysis as core features, each with its own video tutorials. It also computes EVPI and EVPPI. That matters in a field where people really do ask “is another trial worth funding?”

Note how it gets to value of information: TreeAge derives EVPI from a probabilistic sensitivity analysis run at a decision node, rather than directly from the tree. That suits the models it is built for, and is a heavier route for a simple business decision.

Its threshold analysis searches for the input value where the best strategy changes, then explains the change in words.

Price: Business is $660 a year or $2,000 perpetual; Healthcare is $760 a year or $2,300 perpetual. Both perpetual licences renew maintenance at $425 a year after the first year (treeage.com store, retrieved October 2026).

A free viewer that never expires lets anyone open your model. It is also one of only two paid tools here that run natively on a Mac (Big Sur or later, on Intel and Apple silicon).

Mike Middleton’s three Excel add-ins are widely used in teaching. TreePlan builds and rolls back trees, SensIt does one-way and two-way sensitivity with tornado and spider charts, and SimVoi runs simulation and computes value of information.

They are inexpensive and run on Mac as well as Windows Excel, which in this comparison only TreeAge and the browser-based SilverDecisions can also say. TreePlan was last updated in May 2025.

Its distinguishing habit: TreePlan writes the rollback as plain Excel formulas on the sheet. Nothing is hidden in the add-in, so the finished model recalculates for anyone who opens the workbook, with no licence, and an auditor can trace every cell.

The price of that transparency is that the analyses stay simple. Sensitivity comes from Excel data tables through SensIt, and SimVoi computes value of information by simulation on spreadsheet models. The vendor’s own descriptions never use the terms EVPI or EVII.

Price: $59 each for TreePlan and SensIt, $79 for SimVoi, or $179 for the Decision Analysis Toolkit with all three (treeplan.com, retrieved October 2026). Trees and sensitivity and value of information means the $179 toolkit, not the $59 starting price.

SilverDecisions is a free, open-source decision tree program from the Warsaw School of Economics. It runs entirely in a web browser: nothing to install, no account, no cost.

It draws decision trees, rolls them back under six selectable rules, runs sensitivity analysis with tornado diagrams and spider plots, and offers multi-criteria comparison. A finished model can be shared as a link, editable or read-only, or exported to PNG, SVG, PDF and JSON.

Its academic record is solid. Its sensitivity method appeared in a peer-reviewed paper (Kamiński, Jakubczyk and Szufel, Central European Journal of Operations Research, 2017). In 2022 the team also published a free 250-page book, Modeling Decisions with SilverDecisions.

When do you outgrow it? The day you need value of information, Monte Carlo on the tree’s payoffs, or a model your colleagues can open and audit in the spreadsheet they already use. The comparison table shows which paid tools cover each.