Profile lets you manipulate your phone's volume controls all in one convenient place. You can also schedule profile changes, so your phone responds the way you want when you want it to. Profile also gives you the option to display a notification with the current profile, which provides quick access to be able to change any of your settings.
See the FAQ: What does Profile do?

In Depth Description of Features

You can: Whitelist Addon - click here on your phone or search for "noimjosh" in the Market SMS Auto-Reply and Call Auto-Reply settings in each profile. Backup your profiles and time rules to your SD card! Set Ringer & Notification sounds for each profile! SMS and/or MMS Volume - use Ringer volume or it's own volume! Screen Brightness & Screen Timeout for each profile! Airplane Mode, WiFi and Bluetooth settings for each profile! Create/Edit custom sound/settings profiles Create/Edit time based rules Quickly switch profiles from Home screen Widgets Quickly adjust current sound settings from Home screen Widgets See which profile is active from your notifications drawer Select a profile for a period of time Edit current sound settings Version History 25/08/2011 - v2.1.0 Added "Set Active Indefinitely" option for profiles - disables time based rules until you select another profile Added Debug level logging option, and ability to email logs to developer to aid in troubleshooting Added option to disallow screen rotation within Profile app Added option to specify devices as tablet to fix issues with tablets not having phone functionality and some other issues Several bug fixes

Please See FAQs and feel free to contact me.