Great list! I've built Coinstream for iOS, which syncs your balance and your trade history automatically via API for Binance, Bittrex, Bitfinex, Bitstamp, Kraken, Kucoin, GDAX, Coinbase, Gemini, Cryptopia, Coinspot, Coincheck, Yobit, CEX.io, HitBTC, Liqui, Poloniex and BitMEX.

It can also automatically track the balance of a public blockchain address.

The app uses your trade history to calculate your unrealised gain/loss and realised gain/loss for each coin, similar to what Cointracking is doing, but for a fraction of the price :)