If you are tempted to install the application then take a quick look at the list of rights the application demands. On there you will find "Services that cost you money", "Your personal information", "your location", "Your messages", "Your accounts" and much more. Remember this is brought to you buy the company that effectively said "If you value your privacy then don't use us".
I understand why the voice control application might need all these rights but there is absolutely nothing that says that they will not misuse the rights. I am belatedly beginning to think that buying a phone from the "Do not evil" empire was a mistake no matter how lovely it is.