Originally Posted by BaseManAndroid
Do you mean that it is difficult to understand how to use the application?
It is not a nice, enjoyable experience. The design is just outdated. Making a good app is not all. The second part is a good UI, pay attention to details, then the users will be more into using it. Take a look at HRS Hotel Search app. Their app was so badly designed (Gingerbread UI elements, wrong spacing, etc.) that they had to redesign it and after they have done that, they had to start over, with new app package name, new design (finally Holo, looks gorgeous) because of the bad ratings at Play Store. There is an official Android App Design community at Google+ that you may want to check out, with Roman Nurik (Muzei, DashClock) being the one of the moderators
If other developers would make app designs still based on Gingerbread, completely ignoring design guidelines, there would in the future be no material design, uncomplete Android L (because of those outdated apps) and Android platform would loose on popularity (no high-end games, cool apps, etc., you get the idea...).
However, from the screenshots it looks like if you just swap Theme.Light for Theme.Holo.Light.DarkActionBar, for example, and then spent just a few hours making your app look against the design guidelines, trust me, it would be at a totally different level. Good luck