When I look at the reviews here I can look at me the only way to explain that there is a relatively large series of scattering. My copy was flying right away and also flies after 9 weeks intensive use without any problem. By supporting it is to control child's play (sums already too easy for experienced hobby pilots). The connection to the iPhone was stable. Any crashes (added always in the field, I have no space would be large enough to fly indoors) it has survived. After particularly hard crashes you have to restart it before it can be controlled again, but I think this is a security feature. All in all I think it succeeded for the first version of a technically advanced product for a lot and look forward that there are also successful German hardware startups. Small flaws: no acoustic warning when the battery is running low (but should be implemented in future updates) and the A / unplugging the USB connector (which relatively large amount of power needed) I'm always afraid to damage the graceful fliers. He is of course extremely susceptible to wind (when the leaves move on the trees, it is definitely too much) by the low weight. At the same time makes him but even with reasonably sensible treatment virtually indestructible (the more weight the more energy must be released in a crash).
