Oh, boy. Why do I need to install junk on my phone? I know, because somebody needs to save his fellow cattle some precious seconds so that they can go and do some other useless stuff online, and avoid that which is frustrating. I'm the digital equivalent of Soma.
Avoid the Line. Indeed, avoid it like the plague! This game has you sliding your finger across a falling corridor, making sure that you don't touch the edges, or that the warping ball doesn't do it. I don't know. I couldn't figure it out. I think it's about both of them that I need to worry though.
The concept is the same as in Flappy Bird and any other game of the sort. However, even when compared to Flappy Bird, the graphics in AtL are low-rez and unappealing. The gameplay is also highly frustrating, but in a worse way, as you're never quite sure where your current position is in space. At least you know you're on Earth though.
You could torture yourself for a while playing Avoid the Line. However, Flappy Bird is the better choice IMHO.