Range finder apps? Any good ones?

[mooseknuckle]

Me and a buddy have been out shooting target. I have one of those measuring wheels commonly used in construction and landscaping. However I was curious if anyone has tried any of the many available "range finder" apps on there mobile phone more specifically an iPhone?

There seems to be a market for anything you can think of app wise but realistically some of them seem to be more of a gimmick.

Thoughts? Suggestions?

Thanks folks.

[bukwild]

Although it will not range for you the IStrelok app is the most comprehensive shooting app I have come across. It is loaded with features and includes more bran reticles than I even new existed.

[Hotwheels81]

Isnipe has a compute @ distance option that's easy to use... It works pretty good and the ballistics info is very informative

[tkhiebs]

Distance map works good but you have to go to the target first.