Best way to track potential investment properties

[Joe Timko]

Hello Bigger Pockets,

I've been making offers of several properties recently both for fix and flip and buy and hold. I've been tracking the properties manually with paper files. It takes a lot of time for follow up this way. Looking through the files to see who has responded to offers, who hasn't, etc. Does anyone know of an app that you can do this on and set reminders to followup and track the properties?