Captions convey dialogue and relevant non-speech sound, such as a doorbell, music or speaker identification. Subtitles often focus on dialogue or translation. The terms are used inconsistently across apps, so inspect the actual track and choose the version that provides the information the viewer needs.
Look beyond the language name
Two English text tracks can serve different purposes. One may translate speech while another includes sound cues and identifies off-screen speakers. A language label alone does not establish accessibility coverage. Look for captions, CC or SDH indicators and inspect a short scene containing more than straightforward visible dialogue.
Match the viewing situation
A viewer watching without sound may need information about alarms, laughter or background music as well as spoken words. Someone following a second language may prefer a different translation. These are practical preferences, not a reason to assume one text track is universally superior for every person.
Keep availability explicit
A player can select only the tracks delivered for the programme or generated by a separate supported feature. Turning captions on does not guarantee every title has a complete track. If important sound information is missing, report the programme, language and time rather than describing the whole app as inaccessible based on one label.