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Download Understand & create an account

1. Create a SciTools account

Go to licensing.scitools.com and, if you don't have one, Register (name, email, password). Your licenses and claim codes live in this account.

2. Download the right kit for your OS

Download from the licensing portal (check which languages, compilers, and OSes are supported first). Understand offers a few kit variants:

Kit What it includes Platforms
Understand Full GUI + the Qwen local AI model Windows, Linux, macOS
Understand-Minimal Full GUI, no bundled AI model (smaller download) Windows, Linux, macOS
Understand-Granite Full GUI + the Granite local AI model (large) Windows, Linux, macOS
Understand-CLI Command-line only (no GUI) Windows, Linux (not macOS)

Pick Minimal if you don't want the local AI model, or CLI for headless/CI use. Not sure whether Qwen or Granite fits your machine and needs? See Choose a model (local or cloud) — you can also switch or download models after installing, so this choice isn't final.

3. Install and license

You can try Understand for free on the included sample projects, and on any open-source project. A trial license lets you run it on your own code as well.

And if you'd like a guided look first, we'd be happy to have one of our engineers meet with you and demo the features you're interested in.