Is it possible to make gui on mobile app like tinker?

Is there a way to build an interface in the particle.io app similar to tinker does? I assume it is a special thing and only works for tinker?

You might want to look into the mobile SDKs
https://docs.particle.io/reference/ios
https://docs.particle.io/reference/android
https://docs.particle.io/reference/windows

You could even just take the open source Tinker app to get a head start