I used part of the "Laundry App UI Kit Sketch Resource" design that was designed by Satheesh Kumar at: https://www.sketchappsources.com/free-source/3397-laundry-app-ui-kit-sketch-freebie-resource.html to create a quick prototype

Baka kasi mag-expire trial version ng proto.io ko tas di ko na ma-share senyo sooo... Here it is

3 different counters using variables 1. A standard counter 2. A counter from the number of seconds the user sets 3. A countdown