Best AAC devices for speech, plus emerging options

When someone loses the ability to speak, Augmentative and Alternative Communication (AAC) devices can be utilized to regain the ability to communicate once more.

From low-barrier-to-entry communication boards to high-tech speech-generating devices and dedicated AAC apps, there are many helpful options out there – alongside an emerging offering of brain-computer interfaces (BCIs) that extends beyond the capabilities of traditional devices to actually restore speech.

Whether you're a clinician choosing tools for your patients or an adult navigating a new diagnosis, this article is structured to help you start to understand the different options out there and which might work best to support your unique situation.

In this article:

• What is an AAC device? (and who needs one)
• Top AAC devices and apps for speech in 2026
• Beyond AAC: Emerging options that restore natural speech
• AAC vs. BCI: Which approach is right for your situation?

An AAC device is any tool used to help a person communicate when natural speech is absent, limited, or unreliable. These devices range from low-tech printed picture boards to more sophisticated, higher-tech speech-generating computers and applications.

Augmentative and alternative communication describes tools, devices, or systems that either supplement existing speech or replace it entirely. "Augmentative" devices add to speech that already exists; "alternative" options replace speech that doesn't exist or can no longer be relied upon.

Individuals who may benefit from using AAC devices include those living with:

• Autism spectrum disorder, cerebral palsy, Down syndrome, and childhood apraxia (re: breakdown of motor-speech communication pathways) or anarthria (re: complete loss of speech due to paralysis or inability to move).
• Amyotrophic lateral sclerosis (ALS), stroke-related speech impairment, traumatic brain injury (TBI), spinal cord injury (SCI), Parkinson's disease, and spinal muscular atrophy.

AAC technology often evolves in tandem with the user’s condition, meaning they will likely benefit from using multiple different types of devices over the course of their life as their condition and needs progress.

Today, researchers are also exploring the potential of brain-computer interfaces (BCIs) to offer a more direct path to restoring communication.

High-tech vs. low-tech AAC: What's the difference?

Low-tech AAC includes non-electronic tools like picture boards, communication books, and Picture Exchange Communication Systems (PECS). High-tech AAC surrounds electronic speech generating devices (SGDs) and AAC apps that produce digitized or synthesized speech output.

Low-tech AAC involves tools like communication boards, PECS binders, letter boards, and other creations that do not require a battery or screen. They are affordable, durable, and commonly used by beginners or as a backup to higher-caliber devices.

High-tech AAC includes SGDs and tablet-based AAC apps, both of which are devices that produce spoken output, typically through a more dynamic vocabulary system. 

While high-tech options might offer more flexibility, many individuals use both: a low-tech board for quick, daily interactions and a higher-tech system for longer, more detailed conversations.

Dedicated speech generating devices (SGDs) vs. AAC apps

Dedicated SGDs are designed specifically for communication. These devices are typically covered by insurance and are manufactured to be durable, waterproof, and loud enough for noisy environments, making them worthwhile options for individuals living with more severe impairments.

AAC apps run on personal tablets like iPad or Android. As they're significantly cheaper and more portable, they are great for children or those with early-stage conditions – although they lack the specialized hardware of dedicated SGDs. 

Many people test multiple devices before committing, as the right choice will rely heavily on the individual's unique needs, funding situation, and environment. 

Core vs. fringe vocabulary: Why it matters

Core vocabulary refers to a small set of high-frequency words (like 'want,' 'more,' 'stop,' 'go') that the majority of individuals use to communicate every day. Fringe vocabulary is topic-specific and unique to the individual. Effective AAC systems provide both.

Core vocabulary words are used frequently and span across multiple diverse contexts. Research consistently shows that focusing on core words first can help accelerate communication development, even for young or newly diagnosed individuals.

Fringe vocabulary includes names, nouns, and situation-specific terms that matter to the user of the device (for example, "Austin," "grandma," or "physical therapy"). 

A strong AAC system builds around core terminology while adding and customizing language through fringe vocabulary, providing more agency – alongside the opportunity for the user to communicate in a way that matches their unique speech patterns.

The following table explores the most widely used options for AAC devices backed by clinicians and speech-language pathologists (SLPs) that are currently available for use. Prices reflect approximate retail costs – however, insurance reimbursement can help reduce out-of-pocket expenses.

AAC device comparison table

Best dedicated AAC devices

1. Tobii Dynavox TD I-Series (TD I-13 and TD I-16): The most widely prescribed eye-gaze SGD on the market, built for individuals with significant motor impairment including ALS, cerebral palsy, and Rett syndrome. Comes pre-loaded with TD Snap and Communicator 5, and supports voice banking for ALS patients who want to preserve their natural voice.
2. PRC-Saltillo: Offers two device lines with different profiles: the Accent series for users requiring robust access options across cognitive and physical ability levels, and the NovaChat for active, on-the-go communicators. Both support multiple vocabulary systems including LAMP Words for Life and Unity, making them particularly versatile across autism, apraxia, and other diagnoses.
3. Smartbox: A UK-based AAC company whose Grid Pad device line is built for complex access needs. All devices run Grid 3, a flexible software platform that supports communication, environmental control, and computer access across touch, switch, and eye gaze inputs.

Best AAC apps

1. Proloquo2Go/Proloquo (AssistiveWare): AssistiveWare's flagship AAC apps, available across Apple devices. Proloquo2Go is the long-established option favored for multilingual users and those needing significant grid customization, whereas Proloquo is their newer, research-updated app recommended for most English-language users. Both use symbol-based vocabulary and are among the most clinically well-documented AAC apps available.
2. TouchChat HD with WordPower: Another widely used iPad app with a vocabulary system that is particularly popular for adults with acquired language disorders, children with autism, or literate users who are looking for text-based communication alongside symbols.
3. Snap Core First (Tobii Dynavox): Runs on both consumer iPads and dedicated hardware. Its visual layout is designed to reduce the learning curve for new users.
4. LAMP Words for Life: Built on a motor-planning model where each word occupies a consistent location regardless of the page. Reduces cognitive load and supports faster, more automatic communication over time.

Low-tech and budget-friendly AAC options

1. PECS (Picture Exchange Communication System): A structured, research-backed approach using physical picture cards, commonly used with young children and those earlier along in their AAC journey.
2. CBoard and LetMeTalk: Free, open-source AAC applications. While they lack the functionality of paid options, they offer a great starting point for families who may not have access to funding.
3. Communication boards: Printed grids of symbols or photos that remain the most accessible form of AAC. Speech-language pathologists can create customized boards at minimal to no cost, and organizations like Boardmaker offer thousands of free downloadable templates.

While traditional AAC devices are indispensable for generating forms of communication, they don't actually restore the ability to speak. For many individuals, that distinction might not matter. But for others, particularly those with more progressive neurodegenerative conditions, it's key.

What makes a brain-computer interface different from AAC?

A brain-computer interface (BCI) is a technology that reads neural signals directly from the brain and translates them into output – such as text, speech, or computer control – without requiring physical movement or input from the user. Unlike AAC devices, which rely on some form of motor access (touch, eye gaze, switch), BCIs bypass the motor system entirely.

Even the most sophisticated AAC devices require the user to retain some level of reliable motor output, such as tapping a finger, moving their eyes, or breathing into a switch. As this functionality declines, the number of AAC devices they can actually utilize follows suit.

BCIs, on the other hand, take a different approach: Rather than tracking body movement or relying on the user to input some form of information, they record neural signals associated with the intent to communicate and directly translate them into real-time speech, text, or cursor control. 

This makes BCIs a potentially viable option for individuals who have lost all or the majority of motor functionality – a population that simply can’t rely on other AAC devices to help them communicate.

While BCIs are not commercially available at this time, the pace of development has accelerated significantly in recent history, and several options – like the Connexus^® BCI – are now embarking on clinical trials.

How the Connexus BCI works (and who it's designed for)

Developed by Paradromics, the Connexus BCI is designed to transform neural signals into communication – synthesized speech, text, and computer control – at speeds that match natural speech, helping individuals living with impairments regain their agency and the ability to communicate.

Unlike wearables or external devices that rely on eye tracking or residual muscle control, the  Connexus BCI is a cosmetically invisible, surgically implanted device that directly records signals from individual neurons and seamlessly translates intended movement into communication outputs. 

The Connexus BCI is not dependent on a set number of words.  Instead, it utilizes advanced artificial intelligence to produce outputs that enable real-time communication, giving users access to a full vocabulary that’s based on their unique speech patterns rather than a synthetic recreation.

Paradromics is actively recruiting for an FDA-approved, first-in-human early feasibility clinical trial to study communication restoration with the Connexus BCI for individuals with anarthria or severe dysarthria from a progressive disease (like ALS) or an injury that affects muscles or nerves (like a brainstem stroke). Learn more here.

For most individuals with communication disorders, AAC devices remain a practical, accessible, and immediately available option. Brain-computer interfaces are an emerging alternative for individuals with severe motor impairment. However, they are currently only available through clinical research participation.

Alternative and augmentative communication is rarely static. Whether it’s because a child's vocabulary grows, an adult's motor functionality changes over time, or simply because a software receives an update, an AAC device user’s needs will evolve over time. Treating this as an ongoing process rather than a one-time decision can lead to better long-term outcomes.

While AAC is a great starting point due to its widespread usage and availability, BCI technology may be worth investigating, especially for adults with more progressive neurological conditions or for those who want to explore enrollment in a clinical trial.

The field of BCI research, including our clinical work here at Paradromics, represents a profound expansion of what's possible for individuals who have previously had no viable options. 

It might not be a solution for most people reading this article today, but it's no longer solely theoretical. For clinicians and families supporting individuals with severe, progressive speech impairment, stay up to date on the latest BCI news, including updates on clinical trial recruitment, by joining the Paradromics community.