It takes too many efforts to end-up an Android application development that really excites users. With hundreds of types of Android-powered phones, tablets, phablets, other handhelds and convertible devices, Android developers need to optimize an app for a laundry-list of things. And here are the most important of them. Visual design is the first thing that a user notices. If it does not appeal, the app will most likely fail. Developers may have good experience of user interface, but not all of them are expert in visual designing. The best idea is you get the visual designs developed from experts. While scaling, you must remember that Android is the platform of many screen densities. Scale it as a web responsive design so that the app can show up across all Android powered devices. Android uses two types of fonts: Droid and Roboto. However you can add any font with TTF format to your app. 9-patches are considered necessary for building and customizing UI widgets. They let PNGs be stretched and scaled nicely in pre-defined ways. Google recently announced Android Jelly Bean. But how many devices can be upgraded to it. The fact is that most of them will not be upgraded to this, because they were also not upgraded to Ice cream Sandwich and even to Honeycomb. Some device manufacturers have poor reputation for upgrading their devices to new versions. This annoys developers. But they have two options. Deliver the same look and feel for all Android versions, or use separate sets of widgets and drawables for separate versions. Many Android developers think that sticking to fundamentals of UI design will end-up with an indistinctive app. However they are wrong. You will probably not like to see users spending more time in understanding the app, because it is based on a completely different style of navigation. Mobile apps are not supposed to be based on a complex style of navigation. Mobiles are easy devices, and their apps should be easy too. If graphics do not have details, they will not attract users. Ensure that graphics have enough details that make the Android version of the app as original as of iOS and others. Your Android app needs to live up to the expectations of users as iOS apps do. But it will hardly satisfy them if you directly port an iOS version to Android platform. It would deliver a poor experience.