PlaceTrack

If you are even debating buying this then just buy it. Hands down the best location app for multiple reasons: 1) This app takes battery life seriously unlike every other location app out there including Google's own Latitude app. I do not even notice a dip in my battery life with this running in the background. 2) Accuracy is not sacrificed. Somehow the location accuracy is perfect even though I use the default GPS timeout which to me is the most important part of the app and something no one else has. 3) Offline support! Personally, I like having every point saved and with this app you get that! Even if you have no data it will monitor your GPS changes and push them online once you have a data connection. Lastly, the developer is quick to fix bugs and adds features all the time!

I really like this app. it's perfect for road trips. its ui and icons could use tweaking but otherwise works as advertised. ability to fine-tune update frequency is super nice. for those complaining about background update not working there was an iOS bug in 4.1 which is fixed in 4.2

This works great if you are running iOS v4.0. Yes it cashes on v4.1, but the Developer has notified Apple of the crashing issues and it should be fixed when v4.2 comes out. Once this is fixed you'll love this app. If you're not on v4.1 yet, I'd buy it, but if you are, you should wait for an update to resolve the crashes.