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Asterics AAC

Asterics AAC is a web-based augmentative and alternative communication app for creating customizable grids.

Place
#2 of 25
Score
7.8
Asterics AAC's website

What Asterics AAC is

Asterics AAC is a web-based augmentative and alternative communication app for creating customizable grids. Grid cells can show text or images, speak labels or custom text, build sentences from selected words, and suggest words. Users can choose cells through touch, mouse, keyboard, external switches, scanning, hovering, microphone input, or AsTeRICS Framework events such as eye or head movement. Computer voices are available, with options depending on the browser and platform. Grid actions can operate AsTeRICS Framework models, openHAB devices, and programs or devices with an HTTP REST API. The app also supports web radio, YouTube control, and podcasts. After its first browser visit caches the app, it can run offline. Registered users can sync grids across devices; online personal data is encrypted with the user's password, while offline data stays in the browser. Asterics AAC is free and open-source, with browser support on Android, iOS, Windows, macOS, and Linux.

Good

  • Grid cells can combine images, speech, sentences, and predictions.
  • Supports touch, switches, scanning, and other input methods.
  • Can be used offline after the initial browser visit.
  • Online personal data is end-to-end encrypted with the user's password.
  • Free and open-source.

Watch out

  • Available computer voices depend on platform and browser.
  • Online data is deleted after 365 days without login.
  • Lost passwords and associated account data cannot be recovered.
  • Cross-device sync depends on funding for server costs.

Who it suits

It is intended for people who use augmentative and alternative communication and need customizable grids or varied input methods. It may also suit users who want grid actions to connect with supported smart-home or other HTTP REST API devices.

Verdict

Asterics AAC offers flexible grids, multiple ways to select items, and offline use after caching. Online users should keep backups because account data cannot be recovered after a lost password.

Plans and prices

From Asterics AAC's own pricing page, checked 14 Oct 2026.

All about pricing
PlanPriceWhat it gives you
FreeFreeoffline use · optional registration · cloud synchronization for online users

The facts

Each one read from Asterics AAC's own pages, with the date it was checked.

What it does

AsTeRICS API
The AsTeRICS Framework exposes REST and Server-Sent Events interfaces, with JavaScript and Java client libraries documented separately.checked 14 Oct 2026
Cloud storage
Offline users keep data on the device; online users synchronize IndexedDB data with an AsTeRICS Foundation CouchDB using PouchDB.checked 14 Oct 2026
Custom grids
Users can create flexible grid layouts and grid sets whose number of pages is not fixed.checked 14 Oct 2026
Data retention
Online user data is deleted after 365 days without a login.checked 28 Sep 2026
Developer documentation
Developer documentation covers project structure, tools, dynamic grids, Vue.js, data models, storage, internationalization, testing and deployment, while noting that JSDoc is imperfect and not all public methods are documented.checked 14 Oct 2026
Funding model
The project is developed through funded research projects, while the non-profit AsTeRICS Foundation pays server costs.checked 14 Oct 2026
Grid features
Grid elements can show labels or images, speak phrases, collect selected words into sentences, and offer word predictions.checked 28 Sep 2026
HTTP API integration
HTTP actions send arbitrary GET, POST, PUT, DELETE, HEAD, OPTIONS or PATCH requests to REST APIs.checked 14 Oct 2026
Independent development fact
UAS Technikum Wien says development began in 2018 and that ARASAAC collaboration started in early 2022.checked 14 Oct 2026
Independent pilot
The same university reported a third pilot phase at Klinik Floridsdorf after two successful test runs, with possible rollout to other Vienna healthcare facilities.checked 14 Oct 2026
Independent usage evidence
UAS Technikum Wien reported about 45,000 AsTeRICS Grid visits per week in an April 2024 article.checked 14 Oct 2026
Input methods
The app supports mouse, touch, keyboard, switches, scanning, hovering and advanced AsTeRICS Framework inputs such as eye tracking, head tracking and EMG sensors.checked 14 Oct 2026
Input options
Users can select grid elements using mouse or touch, scanning, direction input, Huffman input, or sequential input.checked 28 Sep 2026
Licence
The application source code is licensed under AGPL-3.0 and repository documentation is under CC BY-SA 4.0.checked 14 Oct 2026
Limit: setup effort
An independent Wiener Bildungsserver evaluation says creating custom grids requires substantial familiarization and training time.checked 14 Oct 2026
Matrix messenger
A built-in messenger supports text, emoji and pictogram conversations through Matrix.checked 14 Oct 2026
Media features
Users can search for and play web radio, control YouTube videos inside the app, and play podcasts.checked 28 Sep 2026
Media integrations
The app can search and play YouTube videos, web radio stations through radio-browser.info and podcasts through podcastindex.org.checked 14 Oct 2026
Multilingual grids
Communicators can be built for multiple languages and content language can be changed through an action.checked 14 Oct 2026

Where it runs

Browser limitation
Bluetooth and serial hardware features require Chromium-based browsers such as Chrome, Edge or Chromium.checked 14 Oct 2026
iOS limitation
The documentation says Apple restrictions reduce access to high-quality offline voices in web apps and advises against iPads for this use.checked 14 Oct 2026

The company

Headquarters
Vienna, Austriachecked 23 Sep 2026
Maker
The AsTeRICS Foundation says it was founded in February 2017 to bring project results to people with disabilities, organize workshops, and coordinate projects.checked 28 Sep 2026
Maker legal name
The service identifies its responsible organization as AsTeRICS Foundation.checked 14 Oct 2026
The full review of Asterics AAC

Overview

Asterics AAC is a web-based augmentative and alternative communication app for building customizable grids. Grid elements can combine labels or images with spoken output, sentence building, and word prediction. The range of access methods and layout options lets users shape the interface around how they communicate and interact.

Beyond communication, grid actions can connect to running AsTeRICS Framework models, openHAB devices, and programs or devices that provide an HTTP REST API. The app also includes ways to search for and play web radio, control YouTube videos within the app, and play podcasts.

The AsTeRICS Foundation, founded in February 2017, works to bring project results to people with disabilities, organize workshops, and coordinate projects. For more options, see AAC Communication Software.

Key features

Customizable communication grids

Grid elements may show labels or images, speak an element label or custom text, collect selected words into a sentence, and offer word predictions. Layout customization is fully customizable, and the symbol system is hybrid.

Multiple ways to select grid elements

Users can select elements with touch, a mouse, a keyboard, an external switch, scanning, hovering, microphone input, or AsTeRICS Framework events such as eye or head movement. Direction, Huffman, and sequential input are also supported.

Speech and connected services

Speech output uses computer voices, with available voices depending on the platform and browser. Grid actions can control supported smart-home devices and software through AsTeRICS Framework models, openHAB, or an HTTP REST API.

Media and offline access

Asterics AAC can search for and play web radio, control YouTube videos inside the app, and play podcasts. After the first browser visit downloads the app to its cache, it can be reopened and used offline.

Synchronization and privacy

Registered users can synchronize grids across devices. Personalized data for online users is end-to-end encrypted with the user’s password, which the foundation says means it cannot access the data in unencrypted form. Users who work offline keep personalized data locally in the browser. Online user data is deleted after 365 days without a login.

There is an important account-recovery limitation: if an online user loses their password, neither the password nor account data can be recovered. The documentation recommends downloading backups.

Help

The documentation says users can open help at the relevant section by clicking the help icon or pressing F1.

Pricing

Asterics AAC is free and open-source. Its Free plan costs nothing. There is no free trial, and the app will always remain free and open-source. Cross-device synchronization depends on funding for server costs.

Platforms

Asterics AAC runs in web browsers on Android, iOS, Windows, macOS, and Linux. Its browser-based design supports reopening the app offline after the initial visit has cached it. Registered users can synchronize grids across devices when online.

Who it's for

Asterics AAC is for people seeking customizable augmentative and alternative communication grids, including users who need different ways to select grid elements or use speech output. Its options also suit people who want communication tools alongside supported smart-home controls and media playback. The choice of computer voices varies by platform and browser, and online account users should keep backups because lost passwords cannot be recovered.

Pros and cons

Pros

  • Customizable grids support labels, images, sentence building, and word prediction.
  • Offers a broad range of access methods, including switches, scanning, microphone input, and Framework events such as eye or head movement.
  • Can be used offline after the initial browser visit caches the app.
  • Online personalized data is end-to-end encrypted with the user's password.
  • Includes integrations for supported devices and services, plus radio, YouTube controls, and podcasts.
  • Free and open-source.

Cons

  • Voice availability depends on the platform and browser.
  • Lost passwords and account data cannot be recovered for online users.
  • Online user data is deleted after 365 days without a login.
  • Cross-device synchronization depends on funding for server costs.

Alternatives

Other AAC communication apps to consider include Cboard, Jellow, Speech Assistant AAC, TD Snap, SymboTalk, Spoken, Niki Talk, and Weave Chat AAC.

Verdict

Asterics AAC combines flexible grid-based communication with several selection methods, speech, offline use, and optional synchronization for registered users. Its smart-home integrations and media tools add functions beyond communication. It is free and open-source, but online users should download backups because account recovery is not possible if a password is lost. Those choosing the app should also consider that synchronization depends on server-cost funding and that available voices vary by browser and platform.

Getting started

  1. Open the Asterics AAC website in a supported browser.
  2. Visit once while online so the application is downloaded to the browser cache.
  3. Create or customize grids with labels, images, speech, sentences, and word predictions.
  4. Choose an input method and available computer voice for the platform and browser.
  5. Register to synchronize grids across devices, or use the app offline with personalized data kept in the browser.

Limits worth knowing

The free plan is permanent, but cross-device synchronization depends on funding for server costs. Online data is deleted after 365 days without a login, and a forgotten password cannot be recovered along with the account data.

Questions

Is Asterics AAC free?

Yes. Its Free plan is free, and the plan says Asterics AAC will always remain free and open-source.

Which platforms does it support?

It runs in web browsers on Android, iOS, Windows, macOS, and Linux.

Can I use it offline?

Yes. After the first browser visit downloads the app to its cache, it can be reopened and used offline.

Can grids sync between devices?

Registered users can synchronize grids across devices. Cross-device synchronization depends on funding for server costs.

What happens if I forget my password?

For an online user, the password and account data cannot be recovered. The documentation recommends downloading backups.

Who makes Asterics AAC?

The AsTeRICS Foundation says it was founded in February 2017 to bring project results to people with disabilities, organize workshops, and coordinate projects.

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