10 min

Caption Call Apps: Everything You Need To Know

What are Caption Call apps, who are they for, and why are they useful? Read this article to learn everything you need about caption call apps!

Luke Sperber
Luke Sperber
Caption Call Apps: Everything You Need To Know


Caption call apps (also go by relay services or captioned telephone services) are a relatively new tool that has changed how individuals with hearing loss communicate.

These apps are designed to provide real-time captioning during phone calls, making it easier for people with hearing loss to understand conversations.

As technology has advanced, phone call captioning apps have become more sophisticated, making it possible to use them on smartphones and other mobile devices.

This article will provide an in-depth overview of caption call apps, including how they work, the benefits they offer, and the different types available.

What Are Caption Call Apps And How Do They Work? (Speech to text, Text To Speech, AI)

Smiling man watching at tablet.
Smiling man watching at tablet.

Caption Call apps are software solutions created to provide real-time captions during phone calls. Some caption call apps only support speech-to-text while others also have text-to-speech capabilities for those who have speech impediments or prefer not to use their voice. There are captioning apps that are operated by stenographers and typists, and some offer a more private approach through AI algorithms and Automated Speech Recognition (ASR) to transcribe spoken words into text in real-time.

When a user places or receives a phone call, the voice of the other party is picked up by their device’s microphone and can be processed by various apps of this kind. The speech-to-text technology then converts the spoken words into text, which is displayed on the screen in real-time.

In addition to the speech-to-text technology, some caption call apps also use text-to-speech technology, which converts what users type into spoken words. This allows users with speech impediments to communicate without using their voice.

Different Kinds Of Caption Call Apps

Spelling game with a word "Caption".
Spelling game with a word "Caption".

There are quite a few different types of caption call apps available. Every type has its own unique set of features and capabilities.

Let’s walk you through some of the most common types:

Now, let’s introduce you to some of the best software options of this kind available out there.


Nagish is an FCC-certified phone call captioning app that uses AI to provide fast and accurate real-time captions for phone calls, converting speech to text and text to speech to communicate via voice or text. 

With Nagish, people who are deaf or hard of hearing can engage in 100% private conversations and access call transcripts, eliminating the need for interpreters, deaf translators, stenographers, or captioning assistants. and best of all, it's completely free.

Nagish enables one party to communicate via typing and reading using their existing phone number, while the other party can listen and speak on a regular phone call. 

Nagish eliminates the need for human-operated relay and captioning services and ensures complete privacy, as no third party can access your conversations. Most importantly, Nagish allows users to keep their existing phone numbers, so they don’t have to maintain two separate numbers like they would with other captioning apps. 

The app includes a built-in spam filter and profanity blocker and personalization features such as pre-set responses for quick and seamless conversations, a personal dictionary that allows you to add words and phrases that you commonly use, and multilingual capabilities to bridge language barriers. 

Recently, Nagish launched their latest feature, ‘Nagish Live’, instantly letting you caption conversations around you into written text. This new exciting feature is ideal for public events, class lectures, airports, noisy environments, and doctor’s appointments.   

Caption your calls for free

Download Nagish
Nagish app - Caption Your Phone Calls


With this app, your smart device’s microphone transforms into a captioning service that captures speech and converts it into a text conversation displayed on your screen.

To use it, a reliable Wi-Fi connection is necessary, and the app can also function with Bluetooth devices. To add others to the conversation, users can share a QR code.

Ava is also available on desktop computers for both Mac and PC users.


A free of charge app, CaptionMate has the ability to transcribe phone conversations on phones, landlines, tablets, and computers.

This real-time captioning service was designed for users with hearing loss and is funded by a the FCC’s Telecommunication Relay Services (TRS) Fund.

To use CaptionMate, a user has to enroll and attest that they are a U.S based person with hearing loss. The app supports over 100 languages and provides captions in real-time.


Rogervoice is an app designed to provide subtitles to live calls in more than 80 languages.

Once a user makes a call, speech is displayed as text on the screen. Users can also reply with text-to-speech using the app’s paid version.

Rogervoice also has the ability to caption incoming calls.

Who Can Use Caption Call Apps?

Hearing aid device.
Hearing aid device.

While some captioning apps are open for everyone, other Caption Call apps are only available to registered users with hearing loss. 

The main benefit of caption call apps is that they provide, in most cases, real-time captions during phone calls, making it easier for individuals with hearing loss to understand and participate in conversations.

Additionally, some caption call apps can be used in conjunction with hearing aids or cochlear implants, making them a valuable tool for individuals with hearing devices.

Can People With No Hearing Loss Use Caption Call Apps?

In the U.S many captioning apps are certified and funded by the FCC. Meaning that only registered users with hearing loss are eligible to use them. In other countries, people without hearing loss also benefit from using caption call apps. Yes, these apps were designed to assist individuals with hearing loss, but that doesn’t limit other people from benefiting from these software solutions.

Caption call apps can be helpful in noisy environments or situations where it's difficult to hear the person on the other end of the phone.

For example, individuals who work in loud environments, such as construction sites, may use caption call apps to communicate more effectively on the phone.

Additionally, individuals who are not fluent in a particular language may find caption call apps useful as they can translate spoken language into written text in real-time.

Difference Between Caption Call App And Caption Call Phone

Apps on mobile iPhone.
Apps on mobile iPhone.

It is important to say right away that caption call apps and caption call phones both revolve around the same idea - providing real-time captions during phone conversations. The goal is to make conversations easier for people who are deaf or hard of hearing.

But, there are some differences to keep in mind too.

Captioned Telephone Serviceapps are software applications that can be installed on smartphones, tablets, and computers. They use the device's built-in display to show captions.

Some of these apps require a reliable internet connection, while others work well even with low data consumption.

Caption call phones, on the other hand, are landline telephones designed specifically for individuals with hearing loss.

These phones have a built-in display screen that shows the captions in real-time, making it easier to read and follow the conversation at home or at the office.Caption call phones typically require a landline connection and require the use of a captioned telephone service.

Benefits Of Caption Call Apps

Smiling girl is watching at mobile phone.
Smiling girl is watching at mobile phone.

Now that you have been introduced to the essentials regarding caption call apps, it’s time to walk you through the most important benefits these solutions bring.

Take a look below.

Everyday communication benefits

Caption call apps provide real-time captions during phone calls, making it easier for individuals with hearing loss to understand and participate in conversations.

This can enhance communication skills, help maintain social connections, and improve overall quality of life.

Availability (iPhone, Android)

Caption call apps are widely available on both iPhone and Android platforms, making them easily accessible to a large number of users.

With the widespread adoption of smartphones, this has made caption call apps more accessible to individuals with hearing loss.


These apps offer a high degree of mobility, enabling users to communicate from anywhere with an internet connection. This allows individuals with hearing loss to communicate more effectively and conveniently while on-the-go.


Caption call apps enhance accessibility for individuals with hearing loss, as they provide an alternative means of communication that is not reliant on auditory cues.

This ensures that individuals with hearing loss can communicate more effectively and independently, without relying on other people to interpret or translate.


There is no doubt that caption call apps have introduced a huge change to the way people communicate with the world around them.

What’s more, with continuous improvements in technology, these apps are expected to become even better and more accessible. This will likely make it easier for even more people to communicate with each other.

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