Nice, well done done on the UI, I have a few issues though.
1. I shouldn't need to sign up with your service, this also makes me distrust the product.
2. There is no Gitlab login option.
3. It looks to be written in Javascript and thus uses a lot of resources: http://imgur.com/a/uEH4U
So it's not /really/ a desktop app, it looks like it's just a chrome wrapper for some javascript?