Does GitKraken Desktop allow managing pull requests directly within the app?

Yes, GitKraken Desktop allows you to view the contents of a Pull Request directly in the app. The main Pull Request view will show you all files that were changed, added, or deleted. The Diff view will show you line by line changes to each file as you inspect it.

You can even suggest changes using GitKraken’s own Code Suggest feature without ever leaving the app.

However, if you want to leave comments, you will need to go out to your git provider of choice, GitHub, GitLab, BitBucket, etc.