I have about two dozen game apps on my iPod, and I heavily play probably a quarter of them. This game has become a part of that rotation. I've had and played it for just 3 days, and it's been so much fun that I decided to share my experience (and I'm really not one to post reviews). I also paid the nominal fee to remove ads, a first for me. All of that should give you some indication of how much I enjoy this game.
The sound effects, the graphics, the colors, the animations--I'm taken by all of it. I do occasionally experience hiccups/a bit of lag, but I don't know whether to chalk it up to the app, my latest OS update, or my internet connection. (I had suspected the ads might be the culprit, but the difference after their removal has been slight at best.) Thankfully it's had a minimal effect on my gameplay, but it certainly can be annoying; it would obviously be even better if this didn't happen. (If it is due to an issue with the app, the problem should get fixed soon.)
I love when I can get into a groove, half focused and half zoned out, and blast through jump after jump after jump. I'm already at a high score of 313 with 40 trailing sheep; I'm shooting for 50 now! (I love watching the seemingly endless parade jump by at high numbers when I happen to screw up!)
UPDATE: I blew away my previous record: 511 with 82 sheep. So for all of you having problems or complaining about a buggy game, it is possible!