There's limited demand on both sides of this though. To take the Uber model - you are going to take n trips, in m cities, for y duration. Uber and their users

There's limited demand on both sides of this though. To take the Uber model - you are going to take n trips, in m cities, for y duration. Uber and their users want unlimited drivers, riders, cities piled into their app. Wag is completely different. Your dog is in your home. It needs walking say once a day. I'd have thought the user would want the same reliable person doing it each day - and the walker would ideally want to build a stable of local dogs that need walking each day. Once both sides are happy and stable, you don't need the app.