I'm searching a portfolio manager to keep track of my trades but I'm not able to find what I'm looking for. I know there are tons of products out there (e.g. https://www.producthunt.com/ask/3620-what-s-the-best-cryptocurrency-portfolio-tracker) but they are all web-based or for Mac. What I had in mind:
a desktop app which can run on Linux, free of cost, preferably open source. I don't mind to enter transaction data manually. I also don't need realtime quotes (so a few minutes delay is totally fine), fancy diagrams or other bells and whistles.
I just want to keep track of my trades because of tax-issues and to have an overview what the daily percentage change is (since livecoin.net does not show me that information for whatever kind of reasons).
Is anyone aware of such an application and I'm just too stupid to find it or is everybody using a webbased (/mobile) solution?