Next step in our prototyping: look at microinteractions. They ensure, you got the right feedback and impression for your interaction with apps and show a wide spectrum. The refresh circle is one as much as the short vibration if you use the “sound off” switch to put your iPhone on vibrate only.
There are tons of stuff out there (see airbnb.io/lottie) and important is, that they are not too long and come in easy and natural. Sometime they even help you to discover new functionality (like the pull to refresh).
To close out the day, we look at the different technologies to bring stuff to your mobile. There is a huge spectrum again from responsive web design to full native apps. All these offer various degrees of speed and x-platform capabilities.
Good hint for me: if you need 3D stuff, you must have very good reasons not to use Unity.