InnoCaption Live Call Captions

Review by eFreeware

Phone calls are one of the hardest everyday situations to manage with hearing loss. Voices compress, background noise intrudes, and there is no rewind button when a number, address or appointment time goes past you. Text messages and email solved that problem years ago; the ordinary phone call did not.

InnoCaption Live Call Captions is an Android app from Mezmo Corporation built specifically to close that gap. It transcribes calls as they happen, so the conversation arrives as readable text alongside the audio, and it is offered as a free service funded through a federal program rather than sold as a subscription.

How captioned calling works

The core of the app is live transcription during a call. You make or receive calls as usual, and captions appear as the other person speaks, so you can follow the conversation by reading rather than straining to hear. The developer offers two captioning routes: captions produced by a live stenographer, or automatic captions generated by software. That choice matters because the two approaches fail in different ways, and being able to pick one is more useful than being locked into a single method.

The service is built around keeping your existing phone number. You set up call forwarding so calls route through InnoCaption and come back to you captioned, which means people who call you do not need to learn a new number or install anything. That detail is what makes the app practical for everyday use rather than a demo you try once.

Captions are not limited to English. The app handles Spanish, French, Chinese, Vietnamese and other languages, which broadens who can rely on it beyond English-speaking households.

Hearing aids, implants and streaming audio

Call audio can also be sent to Bluetooth listening devices, including implants and hearing aids. The developer lists compatibility with Oticon, Phonak, Starkey, MED-EL, Advanced Bionics, Cochlear, ReSound, Unitron, Signia, Widex and Rexton, among others, and notes that results can vary depending on the individual device's hardware and software.

That combination is the part I find most sensible about the design. Reading captions while also hearing the call through your own hearing aid keeps both channels working together, instead of forcing you to choose between amplified sound and text.

There is also a web version, so captioned calls can be handled on a computer rather than only on a phone or tablet. For anyone who spends the working day at a desk, that is a meaningful addition.

Voicemail, transcripts and spam calls

Missed calls get their own treatment. Visual voicemail converts a voicemail into text so you can read it instead of replaying it, and call transcripts can be saved for later review. Saving a transcript is useful for anything you might need to check again: a prescription number, a delivery window, a message from a doctor's office.

The app also includes a spam filter that blocks high-risk calls and alerts you to possible spam. For anyone who relies on captions, an unwanted call is more than an annoyance, so having those calls screened before they reach you is a reasonable feature to include.

Caption Alerts are a smaller but thoughtful touch: when a call resumes after a long hold, the app can alert you on the caption screen. Long holds are exactly where attention drifts, and a visual nudge means you are less likely to miss the moment a representative comes back on the line.

Emergency calling is covered too. You can caption a 911 call by dialing from inside the app, though the developer cautions that this service may be limited or unavailable during network disruptions, connection problems or internet failures.

What the service requires

InnoCaption runs on a data connection. Cellular data or Wi-Fi is required for the service to work, which is worth planning around if you travel through areas with weak coverage or rely on a limited data plan. The connection is not optional.

The service is federally funded and FCC certified, and it is free to use. Under federal law, IP captioned telephone service is restricted to registered users with hearing loss, and the cost of generating captions is paid from a federally administered fund.

The app itself carries no ads and no in-app purchases. The service is funded by a federal program, and there are no ads or subscription fees.

Hearing aid and implant compatibility depends on the specific devices involved, and the developer acknowledges that results can vary from one setup to another.

Who this is built for

The app is designed for people who are deaf, hard of hearing, or who otherwise struggle to follow phone calls, including seniors, veterans, and hearing aid or cochlear implant users. It also presents itself as an alternative for people who prefer captions over video relay service and do not want to use ASL to make a call.

That focus shapes everything about the app. It is not a general transcription tool for meetings or voice notes; it is a telephone service with captions attached, and its features all point back to making and receiving calls. If captioned phone conversations are the problem you need solved, the scope is a good match.

The install base is substantial, with more than a million installs and a 4.3 average from over 7,000 ratings, which suggests a settled product rather than an experiment. It has been available since June 2018 and was last updated in September 2026; the most recent release notes mention minor bug fixes, performance improvements, changes to the block action and the ability to multi-lock transcripts.

A dependable option for captioned calls

InnoCaption addresses a specific and stubborn problem well. Live captions during calls, the choice between stenographer and automatic captions, streaming to hearing aids and implants, voicemail transcripts, saved call records and a web version add up to a service built by people who understand how calls actually go wrong.

The trade-offs are the ones the service itself imposes. You need a data connection, and device compatibility depends on your own hearing hardware. None of that is unreasonable for what the app does, but it is part of the picture.

I would suggest it to anyone who is deaf or hard of hearing and wants their phone calls to be readable, particularly hearing aid and cochlear implant users who want call audio and captions together. It is free, it is built for exactly this purpose, and it has been doing the job long enough to have a track record.

What's new in version 4.5.8

InnoCaption v4.5.8 - Minor bug fixes and performance improvements - Improvements to Block action - Added ability to multi-lock transcripts