First of all, it looks great, so well done for that! It's fantastic to actually make it to the release stage.<p>That said, I'm a big fan of adopting the best design paradigm for the platform. If I was building an Android app, material design would be the go to. Why? Well, Android users have already used it. The cognitive burden to how things feel and work has been removed, letting your users feel familiar with the app from the get go.<p>Similarly, with iOS, closely following their human interface guidelines will produce the best results for allowing iOS users to immediately feel at home in your app. This sentiment is mimicked in the WWDC2014 video Designing Intuitive User Experiences.<p>For this reason, I'd personally tend to shy away from trying to port design principles to other platforms. It sure looks nice, but is it worth it?
<i>Why for Heaven's sake should iOS users ever adopt Android's so-so Material Design?</i><p>My perception is that iOS users—both developers and users—are rather 'hostile' against Android and its ecosystem. They believe that if there is one design authority, it must be Apple, so again <i>Why?</i><p>I had Android phones for 4-5 yrs and I still like Android, I think there is a lot innovation on Android. It's in some parts more advanced than iOS but I've still switched back to iOS for 2yrs. I waste now less time with tweaking every tiny detail of the system (what I loved about Android).<p>Material Design is ok but not stunning. Everything is big and if you have a 5.7" brick every piece of Material Design gets even more bloated because most manufacturers have wrong ppi/scaling settings which you can't change. All the Notes from Samsung have this problem and people root them to correct this. It feels like if the MyFirstSony product head designed the UI: you can easily hit the baby-buttons with elbows and closed eyes. Again, Material Design is not really bad but not something I would upvote on Dribbble. It's a careful design that wants to be liked, not brave, a happy and randomly colored design language that doesn't want to hurt, with an impersonal and indecisive personality. Even Windows Phone's design is <i>way</i> more bold and daring, with a mind of its own, it doesn't want to be liked.