Make sure you use iOS is 8.2 or later on your iPhone, and then tap Apple Watch icon on your iPhone screen, select “Buy Me a Pie!” and set “Show App on the Apple Watch” option to ON. As a result you’ll see a small round icon of “Buy Me a Pie!” on your Apple Watch among the icons of the other apps.
There are two ways you can start “Buy Me a Pie!” on the Watch:
– tap the app icon
– swipe up from your watch face and tap the app Glance. Glances are scannable summaries of the information you seek out most frequently. “Buy Me a Pie!” Glance displays the number of products in the last list you’ve opened.