The iPhone lends itself to be the home of many peculiar apps. It has a lot of really great functionality that would make it perfect for some form of virtual pet or even just a nice ambient environment. Koi Pond has taken a little bit from each of those ideas and has actually made a virtual fish pond for your iPhone.
This app is pretty unique, as it's just something that you watch. Your interaction is limited to changing the water color, amount of fish, lily pads in the pond, the different animal sounds you hear, and switching it from day to night. You can shake the iPhone and feed the fish, tap the pond to scare the fish, or leave your finger in and watch them eventually swim up to you.
That's all this app does. There isn't anything more to it. The sounds are pretty interesting, but the chances of this being something you want to fall asleep while listening to are slim to none. Unless of course your soothing sounds of the rain forest tape broke and you can't get to sleep without it.
It's a great concept and it really does look cool. But the fact that Koi Pond actually costs and that you really don't do much besides watch the fish, it's hard to justify making the purchase. While Koi Pond does seem to be one of the more popular paid apps at the time of this review, we're going to have to recommend that you keep that dollar in your virtual pocket for the time being.