Apple more or less confirmed the report by issuing its standard statement about acquisitions: "Apple buys smaller technology companies from time to time, and we generally do not discuss our purpose or plans."
Pop Up Archive was an Oakland-based online platform focused on building tools to transcribe, organize, and search audio files, including a podcast search engine Audiosear.ch, according to the report.
Pop Up Archive was founded in 2012, and has since grown off an extended series of seed investments and grants from sources like Bloomberg Beta, 500 Startups, and the Knight Foundation, among others. The company also has a close relationship with PRX; in 2012, the two organizations partnered up to build PRX’s original web-based archive system.
Both the Pop Up Archive and Audiosear.ch websites state that operations shut down on November 28, 2017, presumably around the time Apple acquired the startup. Financial terms of the deal have not been disclosed.
While no other details about the acquisition were shared, it can be assumed that Pop Up Archive's search tools could be used to improve podcast search and discovery in Apple's official Podcasts app for iPhone and iPad.