T-Minus Reminder Countdown Cost: $5 Get the full version     Trial version     Developer's Website Contacting third-party download site please wait. If your download does not start, click here, or get the full version Descriptions T-Minus Reminder Countdown: T-Minus Reminder Countdown. Do you need to be reminded of something? Whether it's picking-up the kids from soccer, taking the cake out of the oven, or anything else, you can set the Countdown Clock to remind you. You can play our alarm. Manage your time more effectively as you monitor the remaining hours and minutes.