I absolutely love this app and its allowing me to connect with my son through a franchise that I loved growing up. However, the largest nagging factor that keeps me from giving it five stars is the distance calculation when using the Apple Watch App.
If you plan on going for a run or even a hike, the app will most often only give you half credit for the actual mileage it records. For example, just completed a 1.15km walk and received .7km credit. When I jog a 5k, I may only get credit for 1.6km. The end distance calculation is almost always correct, but the credit given is always short. Its extremely frustrating when all you need is 3k to hatch a 10k egg and run a 5k only to find out that you only got credit for half. Kudos for getting me to put more mileage on the treadmill, but please fix this.
Back 2 the Couch about Pokémon GO, v1.39.0