InnoCaption
Product
US only. For people who speak for themselves on the phone but cannot follow the other side, InnoCaption turns a smartphone into a captioned phone at no cost: it is certified by the FCC and paid for through the federal relay fund, and signing up needs a self-certification of hearing loss rather than a doctor's note.
The feature that matters most is the choice of caption source. Automatic speech recognition is quick for routine calls, and you can switch mid-call to a live human stenographer when a pharmacist's accent or a bad line starts producing nonsense. Captioned voicemail and saved transcripts mean you are not relying on memory for appointment times.
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