Many alarm apps can play sound files, but anyone sitting near you is likely to notice if a call doesn’t come in, or if you’re not really talking on the phone. That’s why Interrupt Me plays a one-sided conversation after you answer its simulated calls.
Hearing the pre-recorded script, with pauses built in at the appropriate moments, allows you to respond much more naturally than if you had to make up a conversation on the fly.
In the Settings screen, you can pick which voice and script you’d like to hear, as well as set the volume of the playback.