What is Reddit's opinion of Tunnel Vision?

From 3.5 billion Reddit comments

In case anyone wants to know how I did this, I recorded it on my phone with this app called Tunnel Vision. It's cool but sucks sometimes cause it crashes a lot lol

https://play.google.com/store/apps/details?id=com.androidexperiments.tunnelvision

Nice work! Reminds me of Google creative lab's app: https://play.google.com/store/apps/details?id=com.androidexperiments.tunnelvision

Awesome experimental Google app to play with that does this:
https://play.google.com/store/apps/details?id=com.androidexperiments.tunnelvision