App like Alarmy with customizable auto-dismiss

Hi,
I need an alarm for doing a lucid dreaming technique and need to know if there's an alarm like alarmy but with a customizable auto-dismiss time. The reason I'm asking is that I've been trying to use alarmy and for the past two days I've slept through the alarm (also because it wasn't on the loudest volume).

This is the technique


This is the alarmy app

https://play.google.com/store/apps/d...epIfUCan&hl=en

Thanks.

I found an app called Amdroid on android. It has a custom auto-dismiss.

https://play.google.com/store/apps/d...mclock.amdroid

Thanks.

Alarm Clock Xtreme is pretty lit