The decline of technic sets is such a shame. There's so little support for anything but representative models of specific cars, despite the platform being able to support a ton of mechanical creativity.
It's also a shame because it's really good for mechanical rapid prototyping and you can bend and cut it in a pinch and it stays put. But buying vintage Meccano to abuse like that is expensive and feels like a war crime.
No app. No Bluetooth. Just wires and a simple controller built to be used and understood by children.