Postmates (via Uber Eats)

Postmates was absorbed into Uber Eats, but its brand lingers as a cautionary tale of a delivery startup that burned $1.2 billion without ever turning a profit. This loss rate is 50% higher than the average startup's burn in the same period. Compared to #3 Grubhub's eventual profitability, Postmates' failure underscores its rank as the fourth-worst app, lacking the financial discipline to sustain operations.