I must say, this is a great method of marketing. I've never been super interested in trying the DDG mobile app, but the MacOS option caught my eye. I've now downloaded the app simply to sign up for the desktop option.
Pros-
It integrates well with google things that Firefox seemingly doesn't, eg. Autofill of payment details, and still has some adblocking unlike chrome. The fire button.
Cons-
It has problems downloading most things, and the renderer blanks out when scrolling sometimes, and the the blocking isn't as comprehensive as ublock/privacy badger/decentraleyes.
Worth having as a second install I think
On blocking, it is as comprehensive when it comes to trackers, if not more so -- see comment here: https://news.ycombinator.com/item?id=31002232. However, from the post: "Our built-in tracker blocker isn’t a general “ad blocker”, but it does have the effect of blocking most creepy ads. Let me explain. Using our best-in-class tracker data set we block invasive trackers, which then typically blocks the invasive ads themselves. In other words, if you use an ad blocker to avoid creepy ads and tracking, you should like DuckDuckGo for Mac."