I’d also really like to see this. It would make using GuitarTuna on iPad much more easy.

Please support Landscape mode for GuitarTuna on both iPhone and iPad. When using GuitarTuna with other iOS music-related apps, that are mostly presented in Landscape mode, it requires that iDevices are physically rotated to switch to GuitarTuna for proper use, due to the limitation of the app only supporting vertical displays.