Timer app?

[JDRoberts]

See the following thread. Several different methods discussed there.

Recycle timer / repeat on off command / cycle timer?

So i am in need of a way to turn a device on for xx seconds then off for xx seconds and repeat this over and over again till you tell it to stop. typically the minimum run and off time would be 30/30 also need to make it pretty for my users to change. I’m happy to pay someone to develop this. Also is it possible for this command to run local on gen 2 smart things so that if the internet goes down it will still function?