You are able to use the indicators that are available for the app by default. To view these, please navigate to the ‘Chart’ tab. Please tap on this screen and a popup window will appear. Scroll down for the full list.
Can I add custom indicators to the Android MT4 app?
Unfortunately, you are only able to add indicators to your chart from the default list. You are unable to add your own custom indicators on the MT4 app for Android.