I personally setup an instance of Homebridge on the device running Pi-Hole, then use HomeKit on my Apple products to turn Pi-Hole on/off as if it were a light bulb.
This reminds me of a service that I used in the past, called Evening Edition (http://evening-edition.com/). Thank you for bringing back a service where I can receive a daily digest of today's news. Combined with SaneBox or Unroll.me, your daily email helps to raise the value of the few e-mails that make it to my inbox.
I personally setup an instance of Homebridge on the device running Pi-Hole, then use HomeKit on my Apple products to turn Pi-Hole on/off as if it were a light bulb.