You can try
https://altpocket.io, it's a web app, so you wouldn't need to download anything, and you can pretty much access it on any device. I used in months ago, it was decent. I'm not actually sure what updates it had since I last used it, but it has the features of importing your transactions from Bittrex and Bitfinex, which is a huge plus in my opinion. You can also follow some people's investments if you want to look at some gainz by other people.