The unit's okay ... but if you think you get a cost-Navi unit has not counted on the Garmin-rip. I bought the Garmin app to complement the Kenwood car stereo multimedia receiver DDX4021BT from the iTunes App Store. On the homepage of Kenwood provides the following information: * requirement to use this function to install the paid Garmin navigation app and the appropriate Garmin projection software is mentioned on the iPhone 4. Not that the projection software is again charged with 45 euros (is only the legitimacy for projection onto the Kenwood monitor. are correspondingly first to settle 79 acquisition cost and the grooving again 45 euros. This approach is unacceptable. Accordingly, I am trying the app give back, because this information is not available the Surcharges the download. In addition, there are other needs, which will also be explained not before purchase, such as the fact that is not possible when using the "Navi" function, for example, the radio mode. Conclusion:. Better buy equal the full-fledged Navi unit.