Here are some screen shots of the app. The app has much more accurate readouts than the stock gauges. And again these gauges can be configured any way you like. You can even have each gauge give 2 different readouts! The analog could be a tach while the digital could be engine temp.
And some fun ones!
And yes i think the 99 Ford doesn't require an in app purchase? Only certain years. And that purchase covers any model of that year ford. I'll get back to you on the dongle manuf. i know i bought it from Amazon for less than $30.