If you have a WM device with GPS and you want to keep your speed under control, SpeedoPhone is what you need. You can use it when you’re on foot, in your car, on a train, on a plane, on boat or wherever you like.

The app has a Windows Phone 7 look, nice, user friendly and pleasing to the eye; as for the possibilities and information it has to offer, here's what we've got.

The first steps are the same as always: download the cab from the link at the bottom of the page, install it on your device, open it and you'll get to the home page.

It's simple and intuitive. The app will automatically get the GPS running upon loading, but it's possible to switch it on and off manually with the GPS button. Once the phone has found and fixed enough satellites to work with, the START button will be enabled. Click on it to start your record.

The first data available on the screen is the instantaneous speed, with Km/h as default measure unit. You can change it to miles per hour (Mph) or knots (Kn) by tapping on it.

The app will also give you information on the distance you've covered, the average speed you’ve kept, the highest speed you've reached and - if you select the cost-per-kilometer option - how much it is so far.

Select the button to keep alive the device, so not to let it go on stand by and have it automatically disable the GPS. The button, on the other hand, will activate the full screen option that further on we'll examine more in detail.

Let's now see the option menu instead, accessible via the button.

From there, it's possible set a series of controls to keep your speed under check. By specifying a maximum value for the instantaneous and/or average speed, exceeding that limit will cause the speed indicator to turn red. If you'd like the app to work as a kind of taximeter, or if you want to know how much your travel is costing you, you can set a cost per kilometer. And, last but not least, you can specify how precise you want the instantaneous speed to be: an integer, a one- or a two-figure decimal. The app will remember our favorite settings also on each following use.

Once we've got back to the home page, clicking the button will take us to a screen with more specific information, this time relative to the GPS signal. That means that we will be able to see how many satellites the device is able to detect, how many it has fixed, what is the current dilution of precision of the GPS, our altitude, latitude and longitude.

Let's now see aspect and functions of the Landscape mode, activated by rotating the device.

The home page is fairly close to the one we've already seen, except for the slightly different layout of the buttons. Tap on to activate the full-screen (also available in Portrait): since there are times when a lot of information is too much, and rather than being a help it just hinders us, on here you will only see the instantaneous speed, displayed as an integer and with a much bigger font, so to be clear and immediate.

We'll find the Keep Alive button on there as well; as for the unit of measure, again, if you want to change it you only need to tap on it. And in order to be aware if the device is working or not, if the GPS signal is strong enough to work with you'll see the icon appear on the left. And, at the bottom, the buttons to switch between preset limits.

Some improvements have been made to the HUD mode. Accessible via the button, it will show a mirrored version of the regular display. Why that? Try and put your device on the dashboard, you'll get to see your speed projected on the windshield.

I hope you'll find this app useful and that you'll enjoy working with it. It's available for free, but, as usual, if you'd like to say thanks a coffee would be nice.

The app is available in Italian, French, and English.

If you like this project, please consider donate to the developer.

Update Description:
v1.31:
- Now possible to switch off the warning beep.
- Added trip-start time to the log.
- Added about page.

v1.3:
- Fixed landscape bug on some devices.
- Fixed bug that didn't let the maximum speed get updated while in fullscreen.
- Added sound signal when exceeding the speed limit.
- Now displays the duration of the trip on the home page.
- Added the option to create a log file of the trip.
- Possibility to increase and decrease the values also by tapping and holdin on + and -.
- Fixed minor bugs.

v1.2:
- New option to switch quickly between pre-set speed limits, via onscreen buttons.
- Completely rewritten the code for both fullscreen and HUD mode; now the HUD uses much less RAM than before.
- Bigger font in fullscreen mode.
- Numbers rotated also of 180 degrees in the HUD mode (now you can have your phone with the bottom facing you).
- Fixed the bug that didn't let the phone store the last settings, is entered from the keyboard..
- Some code optimizations..
- Fixed minor bugs.

v1.11:
- Fixed minor bugs.

v1.1:
- Added the HUD option (mirrored numbers) when in fullscreen mode.
- Increased slightly the dimension of the font on the pages with info and settings.

v1.0:
- Initial release.