McDonald's iOS App Mobile Orders: Big Mac Sandwich Free w/ $1 Purchase (Apple Pay Req'd)

To get the deal:
1. In the McDonald's iOS App, go to "Rewards & Deals"
2. Tap the deal for "FREE Big Mac with minimum purchase of $1 using Apple Pay"
3. Tap Add to Mobile Order
4. Add any other item(s) to make your order total $1 or more.
5. Verify offer applies at checkout
6. Must pay using Apple Pay as the payment method