I've been doing this for about two years and I'm finding that managing contacts is getting out of hand. I get 10-15 numbers a week, which isn't amazing but it still grows my list to an unmanageable size. I'm going through my phone trying to remember exactly who I met this past weekend and it's work! What apps do you use for managing all this? I'd like one that could show me recently added contacts or contacts added between certain date ranges. It'd be nice to be able to go back and message everyone I met like... a month ago. It'd also be nice to prioritize all those I've met within the last week. Any good ideas?