My Opinion
Simple, efficient, and easy to use! Depending on camera quality, this might work better on some phones than others, but love the zoom feature. Easy to zoom in and see what you've done.
Works great! I really needed a mirror to get a zoomed in look at something but my phone's camera won't zoom in in selfish mode. This worked perfectly for my needs. This is even better than my magnifying mirror at home because I can choose how much magnification I need and I don't need to move my face in a weird angle to see anything.
This post has received a 34.4 % upvote from @boomerang.