I used to recommend them when they were offering their pro version to get some extra features but they have changed the licence so that you need to pay the subscription if you use it for any commercial work.

    Under what circumstances can I use the free Git GUI?
    If you’re using GitKraken for personal, open source, non-profit, education,
    or as a software startup with less than 20 employees and younger than one
    year, we understand the difference that a free tool can make, and we welcome
    you to use our free Git client.

I don't mind paying for a tool, but the way they went from free to "free or subscribe for extra features" to "You have to subscribe" really left a bitter taste in my mouth.