Spark Chart is designed to be distributed with embedding in mind. This is done really simply using iframes, a HTML tag that enables you to embed other websites into your site, and a Group Link (Satellites).
Step 1 - Create a Group Link (Satellite)
Go into your project and navigate to the Groups page. Create a new Group link and give it a name like "My Embedded Survey" to use on your website.
Step 2 - Copy the Group Link
Click on the "Copy to Clipboard" button to copy the link.
The final step is inserting this link into the source of an iframe tag to use on your website. An example of the formatting would be
<iframe src='http://YOUR COPIED LINK'></iframe>. Inserting HTML into websites depends upon how you are hosting your website: I would refer to your host's documentation to determine how to insert the iframe into your site.
For quick reference, inserting HTML to Wordpress sites can be found here.