Lucid dreaming quick start
Turn on audio cues for lucid dreaming in Settings > Lucid dreaming. These cues will play once the app detects you are dreaming (in REM phase).
Choose a sound which best suits your needs. By default you will hear a woman voice saying “You are dreaming”. You can also set the number of repetitions.
What is lucid dreaming?
Richard Feynman’s Surely You’re Joking, Mr. Feynman! contains a very nice description of a set of lucid dreaming experiments.
You can too dream lucidly!
There are various techniques how to help your mind realize you are dreaming and most of them require some training in advance. The technique we use in Sleep as Android uses audible cues played (ideally in your headphones) during sleep. We play the cues usually towards the end of the deep sleep phases where we expect the most memorable dreaming. Hearing the familiar audible cues should help you realize that you are dreaming. Please refer to other resources online on how to bed train to induce lucid dreaming and how to train yourself on the audible cues.