Add a visual timer to a PowerPoint slide using the TimerLab

You can add animated timers onto your slide show using PowerPointLab's Timer Lab feature, like this example below.

As generated timers consist of normal PowerPoint objects, you can tweak their appearance as you wish. Here are two examples:

To see a slide deck containing an example of a timer, click here. 

PowerPointLabs is a free PowerPoint Add-in developed at NUS School of Computing. You can download it from https://www.comp.nus.edu.sg/~pptlabs/