Apple Inc. pitches its new card as a model of simplicity and transparency, upending everything consumers think about credit cards.
But for the card's overseers at Goldman Sachs Group Inc., it is creating the same headaches that have bedeviled an industry the companies had hoped to disrupt.
Social media postings in recent days by tech entrepreneur David Heinemeier Hansson and Apple co-founder Steve Wozniak complaining about unequal treatment of their wives ignited a firestorm that has engulfed the two giants of Silicon Valley and Wall Street, casting a pall over what the companies had claimed was the most successful launch of a credit card ever.