So now that I got to play the game, I can say it's pretty fun. The controls take some getting used to, but after a while, you can maneuver like a pro. Essentially your ship rotates continuously; when it's facing in a desired direction, you hold the screen to move forward in that direction. Releasing stops your ships and resumes rotating.
There are two modes, both revolving around attaining a high score, but with their own twist on the core mechanic. Collect has you collecting green orbs for points as dangerous red orbs materialize on the screen. This mode is all about timing and positioning, as you need to maneuver around and between the red orbs as long as possible to get a high score.
Chase flips that around and focuses on evasion. Another ship appears on the screen and begins homing in on your ship. So now you need to be able make quick decisions and move fast and not get yourself cornered. I haven't progressed far enough to say whether more ships or red orbs appear
So it's simple game, with a simple mechanic, no IAP or ads, and it's fun. I think it's worth checking out