I'd still like to cover a few independent developer apps and projects in a separate series, so don't by shy - if you've got something that DZone could spotlight, let me know in the comments.
iOS9 hasn't hurt battery life on my phone, but a lot of apps tend to take a whole chunk of your battery power (and your data allowance too!). Matt Galligan put together a great post on this topic entitled Battery life, load times and actually giving a shit about your customers.
The Verge have a great article on audio branding with Skype in Sound Decision.
Benedict Evans puts forward his views on why Mobile is not a neutral platform.
Are you guilty of putting too much motion and animation in your app interfaces? If you suspect the answer is yes, check out Your UI isn't a Disney Movie.
Read Rebekah Wolf's opinions on App Exploration for Apple TV.
If you've been considering trying out RxJava in your app, check out Juan Gomez's Intro to Functional Reactive Programming.
Retrofit is a really popular library across Android apps, and this article will explain how to Upgrade from 1.9 to Retrofit 2.
Some projects on GitHub to watch out for:
leakcanary: a memory leak detection library for Android
FabricView: a new canvas drawing library
smile: Statistical Machine Intelligence and Learning Engine
beauty-treatment-android-animations: a set of examples of slick interaction patterns and animations.
Now that Swift 2.0 is out for all to enjoy, become a guru by discovering some Hidden Gems in Swift You Didn't Know About.
Ever wondered if the libraries in your app are popular with the leading apps? Wonder no more, and check out Libraries Used in the Top 100 iOS Apps.
Some new Swift projects I've noticed this week:
SwiftRandom: a project for generating random data for your app.
SwiftGo: Go's concurrency features made available for Swift 2
Reachability.swift: A replacement for Apple's Reachability
SwiftDate: Easy NSDate Management in Swift.
Ever think that a comment could be the reason your website runs slow? Check out this optimization advice for Node.js applications!