If the estimates prove true, it puts PENN Entertainment and ESPN Bet on a great path for success, though the early downloads don’t necessarily project how many customers they’ll actually retain.ĮSPN BET set a record for the most downloads of any sports betting app in a 2-day span, this past Tuesday-Wednesay, Citizens JMP Securities estimates. In the two days since, the ESPN Bet app has set a record for the most downloads of any sports betting app in a two-day span, according to Legal Sports Report’s Sam McQuillan, who cited estimates from Citizens JMP Securities. ESPN Bet seems to be off to a fantastic start after its Tuesday launch.