The front page, from where you can enable or disable the tracker, see the current status, send your location or a tracking link by email, etc., etc..

Ham Tracker allows Radio Amateurs on the move to send location updates to APRS-IS (the Internet side of APRS) from their mobile device. Once sent, your position can be tracked using services such as aprs.fi. Don't worry though, you're in control of your privacy and can turn off the sending of position reports at any time.

Ham Tracker makes it easy to send an email, SMS (if your device is capable), Facebook status update or Tweet (iOS 5 only) containing an aprs.fi tracking link for your callsign or a Google Maps link showing your current location. Use these to tell colleagues, friends and family where you are, letting them track your progress using a web browser without them needing to phone to ask.

Ham Tracker doesn't even need to be running in the foreground on your device. You can simply install it, configure it, then forget it. The application will sit quietly in the background, notice when your location changes significantly (in practice that's when your phone switches to a different cell on the mobile network), wake up, start sending position reports at regular intervals, notice when you've not moved much for a while, then go back to sleep. This approach only uses the device's GPS receiver when you're actually moving, so keeping battery use to a minimum.

Ham Tracker works with limited functionality on wifi-only devices, though position reports will only be sent when you have a usable wifi network, and on devices without a GPS receiver, though position reports are likely to be less accurate.

Note that in order to use Ham Tracker you need to be a licenced Radio Amateur with a current callsign. You'll also need to know the APRS verification key corresponding to your callsign. If you're really struggling to find your verification key then feel free to ask me to find it for you, remembering to mention your callsign in the email, and I'll respond to your request when I get chance. Depending on how many requests are arriving I sometimes batch these up, so please don't panic if I don't reply for a while.

The settings page. This is where you enter your callsign and APRS verification key.

You can also choose how long after you stop moving before Ham Tracker will turn off the GPS receiver and go to sleep.

More settings that control the position sending interval, allow more frequent updates whilst moving and less frequent when not moving.

You can also set limits on how much of your battery Ham Tracker will use, sending position reports only on significant location changes below one battery level, and not at all below another level. It really can be installed, configured, and just left to do its job.

Send your current location and a map link or tracking link by email, SMS if your device supports it, Facebook status update or (iOS 5 only) Tweet.

Ham Tracker will attempt to "reverse geocode" your current location so that your contacts can see roughly where you are without needing to open the link included in the message.