I'm a data scientist who is building Slipper, an iOS app that uses algorithms to reconnect and recommend missed connections. In beta now, but ~5% of new users are matched on sign-up with a real post written about them. Launching later this month, perhaps early October.
Feedback most definitely welcome!
https://slipperapp.com
(also sneakily available in the App Store if you feel like checking it out: https://itunes.apple.com/us/app/slipper-find-your-missed-con...)