Alarm through headphones

[Mr West]

Can anyone suggest me an alarm clock app that only uses the headphones (when plugged in)?

The native alarm clock overrides the headphones and uses the speaker.

This is very inconvenient when for example sleeping on the train/subway while listening to music.
I want to be the only one hearing the alarm.

Thanks!

 

[Mr West]

Really? No one?

I'm the only subway-sleeping iPhone owner facing this problem?