Want to turn your ringer off except for calls from a select few? SemiSilent selectively mutes your Android ringer so the critical calls come through and the rest stay silent.
Install the app, launch it, and SemiSilent pulls up your contact list. From there you can whitelist/blacklist callers so that the phone rings when they call (or doesn’t). You can also adjust the ring volume through SemiSilent so even though you ringer is technically off you can adjust it to your liking for the times SemiSilent, via your whitelist, activates the ringer.
SemiSilent is a free Android application (the $0.99 Pro version removes the advertisements and adds in a homescreen widget). Hit up the link below to grab a copy.