Crypticker is the easiest to use bitcoin and cryptocurrency menu bar ticker in the App Store.
Crypticker monitors all your cryptocurrencies while staying conveniently out of the way.
Exchanges: GDAX, Bitfinex, Kraken, OKCoin, Gemini, CEX.IO, Poloniex, Bitsquare, Bitstamp, BTC-e, and more
Currencies: USD, CAD, AUD, GBP, CNY, EUR, HKD, INR, IDR, MXN, PHP, RUR, and more
Coins: BTC, BCH, ETH, IOT, LTC, XRP, REP, AVT, ZEN, BFX, BCC, XBC, BCU, CVC, DASH, XMR, and more
Multiple tickers in the menu bar (up to 4)
Update frequencies between real-time and 30 minutes
Toggle displaying exchange names in the menu bar