https://techcrunch.com/2017/11/21/you-can-now-control-the-dji-spark-with-gamevices-controller-accessory/

Gamevice is a bit like way to turn your iPhone or iPad into a Switch, at least in terms of adding physical controls to your gaming experience. But now the add-on can go beyond gaming, offering a way to easily control the DJI Spark with added precision and improved ergonomics when compared to just using a touchscreen device on its own.

This is actually great news for Spark owners, since the diminutive drone has a lot going for it, including relative affordability, and decent picture quality. But the one thing it’s lacking that the rest of the DJI lineup boasts is a solid physical controller experience included in the box – the Gamevice provides that, with a design that’s actually superior to the official DJI controller in a number of ways.