When pressed you activate/deactivate the sleep mode.
In sleep mode you can configure to silence your phone volume for phone calls and for notifications sounds (like SMS).
You can also configure the app to send automatic reject message to people that calls you or texts you while you are in sleep mode.
In premium mode (available as in app extension) you can configure your exceptional user lists.
For people in this list you can set different behavior like call/SMS volume activation, option to wake you up with special SMS and other special configurations set for those special users.
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