Can anyone recommend an app that Alerts me of big stock price moves stocks

Hi all,Im looking for a free app I can use on my phone where I get push notifications for big price changes on stocks I follow. Preferably, it would be nice if I can find a way to set my own % in change in price Id like it to notify me for. If anyone has any suggestions, Id greatly appreciate it!

You want a good flat stock that has not done anything for a bit and has a 50 RSI and good fundamentals. That is where the real money is made.