Mashable Choice highlights the best of everything we cover, have experienced first-hand and would recommend to others. Hello, $3. That was easy. Venmo, you're screwed. Apple Pay Cash is a super simple person-to-person payment system that works exactly where millions of us already live our lives: text messaging. Apple teased it during its Worldwide Developers Conference (WWDC) in the spring, but didn't release the feature until Tuesday when it debuted in the iOS 11.2 beta.