Apple CEO Tim Cook says the company’s App Store had a blockbuster July.

Cook tweeted Wednesday that Apple saw its “highest-ever monthly billings and money paid to developers” last month.

In Apple’s latest earnings report (fiscal 2016 third quarter ended June 25, 2016), Apple’s quarterly revenue from the App Store set an all-time record as the company’s “Services” segment, which includes the App Store, saw its business grow 19 percent year over year.

MacDailyNews Take: Apple’s App Store is a perpetual motion cash generator.