hey, unrelated, but found your another question here: https://news.ycombinator.com/item?id=39877523

replying to your question from there: yes, I'm using SmartGit since 2014, and it's really good. there are others, 'more' free, or more paid -- depends on what you'd like. I'm sure you'll find logs of YT vids on this

SourceTree I think it's still the most popular 'as free as it gets' UI for git.

there's also Fork, GitKraken