Fire2 is a iOS field recording app that has apparently been acquired by RODE (an audio equipment company). This link is to the legacy support page

It's a paid service, and I've not read reviews yet, but it promises to be fast...

ABSTRACT: This article provides an account of the question of method as it relates to collective modes of research organised, conceived and produced through the interplay between digital technologies of communication and offline strategies of investigation. It does so by exploring the orchestration of research platforms, which are mediating devices that constitute the production of knowledge across a range of geocultural settings. In the context of a project entitled Transit Labour: Circuits, Regions, Borders, the article maintains that research methods must contend with the ideological, technological and economic instruments that condition knowledge production at the current conjuncture. The platform, we argue, operates as a medium through which research, labour, subjectivity and knowledge are shaped in ways specific to hardware settings, software dynamics and the materialities of labour and life.

Sam Ladner writes on (and practices) ethnography in non-academic settings...eg. "private sector ethnography." While there is not much "digital" in her post here (a transcript of a plenary talk) with regards to overt subject matter, much of what she says intersects with how this course approaches the intersection of "digital" and "ethnography".