The best alternatives to CityCoins are Robinhood, Coinbase, and Fly Holly. If these 3 options don't work for you, we've listed a few more alternatives below.
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AssemblyAI— Multilingual Speech-to-Text API with superhuman accuracy
If you guys have multiple Cryptocurrency wallets, you can checkout Bittracker on the iOS App Store! It lets you store your total amount you have and you can continuously watch your total amount, and see how much you're gaining or losing without checking multiple apps!
A real-time network of cryptocoins ranked by 24hr trading volume, price info, charts, market cap. CoinGenome now allows you to follow your favorite cryptocurrencies bringing you all the latest real-time pricing data.