Does Sleep Time work on iPhone Duo?

Yes. Sleep Time has been updated for iPhone Duo and uses the full inner display. Owners report it fills the inner display.

Is Sleep Time letterboxed on iPhone Duo?

No. Sleep Time fills the full inner display.

Name: Sleep Time: Alarm Calculator
Author: Oleg Filimonov

Oleg FilimonovUtilities

On iPhone Duo

Sleep Time fills the inner screen and adapts when you fold.

Owners report it fills the inner display.

1 report from people using iPhone Duo