Android is not iOS. The platform works differently. We, as Android users and developers, do not complain about these apps because we don't want Android apps look like iOS apps we complain because they break the platform guidelines and consistency. Android users have learned to use their devices in certain way. Apps that follow the Android design guidelines are easy to use and learn for Android users. Apps that follow iOS guidelines are easy to use on iOS but on on Android.
When the first one of these apps came out, Readability, I wrote a detailed post about it. Although I got a very positive response from the Readability folks who began fixing the problems other app that followed made the same mistakes. I've gathered some of them here and pointing out some of the most common mistakes. This post is not meant to be hostile or finger pointing / laughing at these apps. I sincerely hope that others would learn from these mistakes and reach better results.
Common mistake: SharingAndroid intent system is great for sharing. I've written about it before here and here. Use intents to share!
Turntable.fm, Instagram, Flipboard and 500px all implement sharing wrong.
Common mistake: iOS iconsAndroid has set of standard icons for common tasks like sharing. Android users know what to look for. Don't use iOS sharing icon in your app!
Turntable.fm and 500px both use iOS icons.
Common mistake: Right caret in listsAndroid Design guidelines clearly states that lists should not use right caret.
Common mistake: On-screen back buttonFortunately, this is less common nowadays but this is critical. Android apps should not have an on-screen back button. Instagram fails in this.
The list goes on, Android UI Anti-Patterns on G+Unfortunately, these apps here are just few of the bad examples we have seen lately and this list isn't complete.
+Paul Burke started a Google+ page for Android UI Anti-Patterns where we plan to keep eye on emerging anti-patterns on Android. The page is not meant to be a place where apps are mocked and laughed at but a page to teach and learn from mistakes made by others. The page will also be only limited to apps that have a large team behind them. Individual developers should never be used as bad examples.
PS. Thanks to Paul Burke for sending me the Turntable.fm screenshots!