Works great with my battery
This app is extremely simple, but works great. It connects to my battery in seconds, gives me the information that I need. I also have an extended battery hooked up, and you can change the amount of charge within the combined batteries in the app, and it gives you an accurate reading. As noted, there is no security, and I have been able to connect to another person‘s battery. But really, the only thing you can do is see how much charge is in the battery. If you are so scared of someone seeing how much battery charge you have, then watch out lol!