Old version to test on El Capitan?

I’m on a mac running 10.11.6 and when I tried to download and test the version of OmniOutliner available on your Web site I get that it requires Sierra. Is there any way to locate, trial and perhaps purchase the older version that DID run under El Capitan?

I canot upgrade my desktop at this time so if I am to use this app I need the older version.

There’s a full list of downloads at the link below, including several older versions of OmniOutliner. Hope that helps

https://www.omnigroup.com/download/

Thanks, I was looking for a link to ta downloads page on the web site and couldn’t find it.

side note I HATE the new style of web sites hiding stuff further down the page with huge irrelevant pictures on the top level. I want a quick and easy set of links right at the top so I can navigate to what I want. I don’t care for fancy graphics that impede my ability to find what I am looking for!

For future reference, I just Googled “Omni Group downloads”, so I bypassed the pretty graphics