Unfortunately a lot of zTrader relies on Android's ActionBar framework, which was introduced in 4.0. It is very standard for developers to have a minimum API of 14 or 15, which is what zTrader supports.

Hey everybody, we are the zTrader dev team. We've been on Google Play for a year now, and we will be exiting beta this week. We're very excited to reveal the newest feature of zTrader: Trigger orders. You can now have zTrader keep track of any currency pair on any of the 17 supported exchanges, and trade based on conditions that you set. For example, you could have it buy 1 BTC if it drops to $200. You can also have a percentage-based condition. For example, if BTC goes up 20% in 1 day, sell 2 BTC.

https://play.google.com/store/apps/details?id=co.bandicoot.ztrader

While you can find a full description of the app on the Play Store, here is a concise list of zTrader's features:

Overview

• Full trading capability with seamless switching between exchanges and currencies
• Charts with many popular technical analysis tools (similar to BitcoinWisdom)
• Market overview (similar to CoinMarketCap)
• Secure encrypted storage of API keys
• Price alerts and percentage alerts
• News feed
• Chatroom to chat with other traders

Exchanges

• Bitfinex
• Bitstamp
• Bittrex
• BitVC (Huobi)
• Bleutrade
• BTC China
• BTC-e
• CEX.IO
• Cryptsy
• EmpoEX
• HitBTC
• Huobi
• Justcoin
• Kraken
• OKCoin
• Poloniex

In-depth features

• Lightweight file size, just over 2mb
• Limit and market orders on every exchange
• 256-bit AES encryption of API keys, unlike other trading clients which store your credentials in a plain-text file for anyone to see
• User-specified lock-out timer
• Full screen interactive chart with many types of technical analysis such as EMA, MACD, Bollinger Bands, Stochastic, RSI, Average True Range, MA Envelopes, Fibonacci Retracements, and more. Users familiar with BitcoinWisdom will find this chart very similar.
• Full market overview, showing all cryptocurrencies. Users familiar with CoinMarketCap will find this feature very similar.
• All features offered by the exchanges, including order books, live trades, balances, open orders, history (with CSV export)
• Advanced trading types on Bitfinex, including margin trading, stop loss, etc.
• Bitfinex hidden orders, margin info, and active positions
• News feed from CoinDesk
• Option to throttle data refresh rate, reducing data usage on mobile networks
• Chart export to CSV
• Request cryptocurrency deposit addresses from exchanges



Hope you guys like it. Feel free to reply or contact us with any comments, questions, or suggestions.

- zTrader