Hard on the heels of my review of Geotags, some of our readers suggested we take a look at Waypoints, [App Store link] which has some similar functions and a smoother interface. Waypoints, which is US $2.99, can save any GPS location you choose, and allow you to access them with your desktop web browser, or it can download GPX or Google Earth (KML) files for the waypoints you've visited. It runs on the iPhone and requires iPhone software version 2.1 and above.
You can view any waypoint in Google Maps on your iPhone, and you can email locations including latitude, longitude, elevation, and any notes you add to the description. The software also embeds a hyperlink to open Google Maps at the spot you bookmarked. There is also a feature to share saved locations with people on the same wireless network. The usefulness of that feature will depend on how a person wants to use the software.
Waypoints will work on an iPod Touch, but with limited usefulness because there is no on-board GPS in those devices and the WiFi/Skyhook location services aren't really precise enough to take up the slack (nor are hotspots prevalent out in the backcountry).
Read on for more impressions, or check out the screenshot gallery: