Calendarist - Time blocking companion for Google Calendar
My Data Manager - Description Take control of your mobile data and save money on your mobile phone bill!
ScreenTime - Show your macOS desktop on FaceTime
Data Usage - Data Usage Monitor | Your guard against data plan overages.
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.
Call Meter 3G - Call Meter 3G is an app that acts as a monitoring tool for all your calls, messages, and internet data.