Modern smartphones have GPS functions, but Garmin devices are perhaps better in terms of signal coverage and accuracy. And those are not the only benefits of owning Garmin devices, so it is hardly surprising that the market demand for the devices is still high. To provide a better support for all Garmin device owners, the company released Garmin Express. Garmin Express is a companion software for Garmin devices. It basically allows Garmin owners to get the most out of their devices. It makes sure that your Garmin device is always at its maximum levels of performance.