it always annoyed me that i have to keep and maintain an excel file or something to get a quick overview of my current coin balances, so i started to develop a small app to do that for me.
The app is called CryptoBook and is currently only available for Windows 10 (because it's windows store uwp app). It's mostly based on the API of cryptocompare.com to get a list of all available coins and their prices, therefore it theoretically supports about 2150 different coins. You can choose to enter your stocks manually or you can let the app fetch your balance from one of the supported websites (Currently: Poloniex, Bitfinex, Bitstamp, Coinbase, Coinpayments, hitbtc, bitbay and nicehash). Since version 0.2 there also is a mining profit calculator to help you to choose a coin to mine, if you're into mining.
The app is freely available from microsofts apps store: https://www.microsoft.com/de-de/store/p/app/9NN8SNF81Z87
More information can be found on my homepage: https://www.mortara.org/apps-software/windows/cryptobook/
As i said, the app is free! Also, there are no banner-ads or In-App-Purchases. Every feature available for everyone! The only thing i've done is to add a page with affiliate links to some of the platforms that are supported. If you use one of these links to register an account, i'll get a share of the fees for your transactions (it won't cost anything extra!).
I'm happy for any feedback here, good or bad!
Greetings,
Patrick