Developing KaiOS apps on Mac (updated for Ventura 13.2) Getting StartedDeveloping and testing KaiOS apps on a real device using Mac is easy, and a great way to validate your apps on actual hardware. For setup, all you need is adb, WebIDE (a debug tool that used to come pre-packaged with Firefox), and a debug-enabled KaiOS device like the Nokia 8110 4G. Waterfox ClassicAccording to the KaiOS ENV Setup guide, Firefox 59 is recommended for KaiOS development.