Abstract: Apparatuses, systems, and methods for mining time data are provided. Implementations consistent with the present disclosure provide for mining devices for time spent on behalf of clients-time that would otherwise be un-captured, unbilled time and money, and ensure that a user is properly compensated for all they do. Operations consistent with the present disclosure include selecting at least one billing criteria by a user of a mobile device, searching the mobile device for stored electronic communication data related to the at least one billing criteria, returning at least one matched electronic communication from among the stored electronic communication data related to the at least one billing criteria, assigning at least one of a time value and a billing value to the at least one matched electronic communication, and performing at least one of timekeeping and billing based up-on the assigned at least one time value and billing value.