Buying SimpleDiagrams is easy. Just click on the "Buy Now" button above for the type of license you want. That will take you to our shopping cart at FastSpring.com, the efficient and secure payment processor. After you finish purchasing your license, you'll receive an email with your license key.

And while you're waiting for your license to arrive via email (shouldn't be long), make sure you install the trial version of SimpleDiagrams if you don't already have it installed. Just go the home page and click the installer on the right. Then, when you receive your license key via email, you can use this key and your email to fully unlock the trial version.

So simple you don't even need a diagram.

Let's be honest. One installation just doesn't do it for you. You need to install an application on multiple computers: your laptop, your home computer, etc. So, when you purchase a SimpleDiagrams license, you can register the application up to three times, as long as it's for your use only. Installing a version for your cousin Daryl doesn't count. It's only for you. Then again, I have no idea how we'd find out about Daryl.

When you purchase a volume license, you get three installations for each user to use on their computers.

Your team and your customers need your ideas in a simple form. Start communicating with SimpleDiagrams.