Hi everyone

I am trying to find the right app/website for my needs. I am mostly a buy and holder, but I do buy in small amounts quite often, so I often have multiple buys at different amounts and different prices. then of course I want to know the average price I paid, so I know when is a good time to sell, if I'm in profit or not etc.

I also would like something I can use from anywhere, so with a login using email. Blockfolio is ok, but if I lose my phone its gone.

I am looking for something that is free, can be backed up, preferably used on a phone or desktop

Any ideas? 

Thanks