Since Google shutdown Project Tango, I started playing around with ARCore. ARCore is what is used to power the AR filters on the new Google Pixel. Unlike Project Tango, ARCore does not require specialised hardware or sensors, and just works based on pre-existing hardware on the phone.
Released my latest app, QamAR based on this on the Google Play Store today. You can use this app to drag and drop 3D models in the real world on your phone. You can see the video demo below.
You can download it here. Please read the instructions carefully below downloading and installing, as this is a bit of a hacky one.