Silence is a free utility for Android that will change your ringer, notification, and other alert sound settings automatically based on a schedule you provide. For example, if you want the ringer off when you go to bed at 10pm and automatically on again at 6am when you wake, but only on Mondays to Wednesdays, Silence can do that easily.
Once installed, just add as many actions as you choose, select the days of the week and the times of day you want to use as triggers, and what actions you want the app to take. Silence can toggle Wi-Fi, Bluetooth, Airplane mode, and ringer settings. Just set your schedule, tell the app whether you want the settings changed back to default at the end of the time period you set, and enable it. Silence’s beauty is in the fact that it’s fast, free, easy on the battery, and incredibly simple to use.