Since 2017 I am using Margin Trading bot from Margin.de for my daily scalping. It has a smooth GUI and easy to learn. There is a voucher to get 10% off lifetime license (around 0.3 ETH) if you check-out with coupon code: MarginProfits

I like to support them, because of the good product. During a mini crash a few days ago you can still use it. On an app or website it just stop that's why trading with API is better.