What's a good Android app that just uses my phone's camera to act as a simple, reliable mirror?

Honestly, sometimes you just need a mirror and don't want to open the camera app and switch to the front-facing lens. "Mirror App - Beauty Mirror" does exactly what it says on the tin. It's a simple mirror using your phone's camera. I checked it out, and it's got decent image quality, depending on your phone's front camera, of course. It also includes basic zoom functionality, which is handy. It's not packed with features, but that's kind of the point – it's lightweight and easy to use. If you're looking for a no-frills mirror replacement, this one's worth a shot. Plus, the 4.5 rating suggests other users find it reliable, which is always a good sign.