Financial Times:

UberCheats was an algorithm-auditing tool. Samii, who was working as a cycle courier for Uber in Pittsburgh, Pennsylvania, at the time, had lost trust in the automated system that essentially functioned as his boss. He had become convinced the Uber Eats app was consistently making errors and underpaying him. After weeks of trying and failing to get a human being at Uber to explain, he felt he had no choice but to take matters into his own hands.