4/5 rating based on 51 reviews. Read all reviews for OpenValve for iPhone.
OpenValve is free iOS app published by JAEHYUN LEE
EYEL1NER
The last update erased all progress I made (150 levels or so), added the dreaded ads that everyone (except advertisers I suppose) hates, and seems to have caused some kind of input lag when you tap a pipe to rotate it. PipeMania used to be one of my favorite games on iOS pre-patch, a five-star game, but as it is now in its current state? I hate it.
Daaavey
This game gets harder and harder as you progress through the levels. Was stuck at level 40 for DAYS, but I finally figured it out! The bugs mentioned in previous versions seemed to be fixed in this version (1.9).
Remoh Cuz
250 levels, all doable, that get progressively harder. Has ad at bottom of screen, but barely noticeable so not at all intrusive. NO bugs. HIGHLY RECOMMENDED.
JerseyPhoenix01
Every level gets harder and really makes you think on how to solve it. I got stuck on a few of them for awhile but finally figured it out. Before I knew it I had finished all the levels and wondered why there weren't more.