I've only ever used the MT4 mobile app a few times and it was only to receive push notifications. But from what I remember, it seemed good also. It should not be taken for granted the value of having such massive support for MT4. There are many talented programmers that are creating tools for MT4 left and right. This allows you to experiment with things. Imagine a different platform that does not have much community support; the only EAs and indicators you would see are only what would be available by the default installation.