Comparison

TD Snap® vs CoreVOICE

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

TD Snap®

This communication software assists individuals with speech and language disabilities by offering symbol-supported and text-based communication options. It features customizable page sets and editing tools, accessible via touch, eye gaze, and switch access. A subscription is required after a trial period.

Highlights
  • Symbol-supported and text-based page sets
  • Customizable editing tools
  • Touch, eye gaze, and switch access
  • Picture Communication Symbols library
  • Visual schedules and timers
  • Cloud-based content syncing
Features
Read full description

TD Snap® is a flexible, robust communication software for people with speech and language disabilities such as autism, cerebral palsy and aphasia. Created by Tobii Dynavox, a leader in augmentative and alternative communication (AAC), TD Snap provides a choice of evidence-based, professionally developed page sets designed to meet different communication needs and preferences, with both symbol-supported and text-based options. TD Snap includes easy-to-use editing tools to create a personalized experience, and is accessible via touch, eye gaze and switch access methods. A monthly subscription is required to enable speech following a 1-month trial period. Tobii Dynavox offers complementary resources to help communicators, caregivers, and professionals succeed with TD Snap. These resources can be found by visiting myTobiiDynavox.com or tobiidynavox.com. Have you purchased a Tobii Dynavox device and looking to use your companion TD Snap license on an iOS device? Download this app and log into myTobiiDynavox in the start-up wizard. Customizable TD Snap Page Sets: • Core First: A symbol-supported page set enabling a path to literacy at any stage of language development, now also available in High contrast • Motor Plan: A symbol-supported page set enabling efficient language acquisition at any age, custom designed for both touch and eye gaze • Express: A symbol-supported page set to help people express themselves using theme-based phrases and words, now also available in bilingual Spanish/English • Text: A page set for those who are literate or transitioning from symbol supports to literacy • Scanning: A page set for those who use scanning as their primary access method, • Aphasia: A page set to help adults with aphasia communicate while also supporting language recovery , now also available in bilingual Spanish/English • PODD*: A page set based on the Pragmatic Organization Dynamic Display vocabulary strategy, developed by AAC expert Gayle Porter • Gateway*: A page set based on the Gateway vocabulary strategy, developed by Joan Bruno *Denotes in-app purchase of an additional monthly subscription per page or symbol set. Developed by a third party. Powerful Set of Integrated TD Snap Tools: • Editing: An intuitive editing tool to help customize buttons to meet a communicator’s unique needs • Diversity: A variety of diversity settings that let you customize skin tone, hair shades, and more • PCS: A built-in library of over 75,000 Picture Communication Symbols translated into over 25 languages • Search: A search bar to locate words and symbols with an easy and accessible path to find them • Visual Supports: A set of supports like visual schedules, timers, and scripts • Google Assistant: An integrated tool enabling symbol-supported access to Google Assistant • QuickFires: A set of commonly used pre-programmed phrases to make communication smoother • myTobiiDynavox: A cloud-based resource for backing up, sharing, and syncing customized content. How Subscriptions Work Following the 1-month free trial, your Apple ID payment method on file will automatically be charged monthly unless you cancel 24 hours before the trial ends. Subsequent monthly payments will be charged to your Apple ID payment method 24 hours before the end of each period. Your subscriptions are managed in account settings on the App Store. TD Snap® is a trademark and registered trademark of Tobii Dynavox AB. Tobii Dynavox cannot guarantee compatibility of TD Snap with any non-Tobii Dynavox brand of hardware and will not offer technical support for compatibility issues. All downloads are governed by TD Snap License Agreement for Download.

About

CoreVOICE

This app transforms your device into an augmentative and alternative communication (AAC) tool, providing access to essential words for building sentences. Designed by a speech pathologist, it simplifies communication for those with speech disorders, offering customizable boards and text-to-speech functionality.

Highlights
  • Access to 80% of core communication words
  • Sentence building with touch-to-speak
  • Customizable buttons with photos/emojis
  • Unlimited custom boards
  • Grid zoom and large keyboard options
  • Export and share custom boards
Features
Read full description

CoreVoice turns your phone or tablet into an assistive communication device that allows easy access to 80% of "core" words used in communication. Designed by a licensed Speech Language Pathologist, the system simplifies communication for individuals with communication disorders. Sentences are built by touching each word and then pressing the sentence bar to have the device speak it. Users can also delete their entire sentence, or remove it one selection at a time. The application has options to speak each word on press, grid zoom levels, quick phrases, masking/hiding buttons, a large keyboard, simple device voice selection, ability to customize any button with camera photos/gallery images/emojis, and can create unlimited custom boards (each containing up to 600 icons with touch-to-speak capabilities). Grids can also be enlarged automatically to allow for different grid sizes... allowing CoreVoice to be used even as a large switch. The application comes in English and Spanish, yet custom boards for any language can also be created. Boards can also be exported and shared with other devices.

Screenshots

CoreVOICE2 screens

Verdict

The call

The clearest difference is price: TD Snap® at Free against CoreVOICE's $49.99. TD Snap® also leads on ratings volume (867 vs 4) and update cadence (every 2 months vs every 5 months). CoreVOICE's advantage is rating (5.0 vs 4.1) and review sentiment (67% vs 31%). On ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

TD Snap® is free to download; CoreVOICE costs $49.99 up front. TD Snap® sells 10 in-app purchases, starting at $4.99 per month. CoreVOICE asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

CoreVOICE holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: TD Snap® has 867 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 31% of TD Snap®'s written reviews are positive against 67% of CoreVOICE's.

UpkeepUpdate frequency

TD Snap® ships an update every 2 months, CoreVOICE every 5 months. The most recent releases landed on October 26, 2026 and October 18, 2026 respectively.

Scorecard9 real differences · 1 level
TD Snap® versus CoreVOICE: the parameters behind the verdict, then further details
ParameterTD Snap®CoreVOICE
PriceFree — better$49.99
Rating4.1 (867 ratings)5.0 (4 ratings) — better
Positive reviews30.7% of reviews66.7% of reviews — better
Number of ratings867 — better4
Update frequencyEvery 2 months — betterEvery 5 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionPaid — better
DevicesiPadiPhone, iPad, iPod — better
Requires iOS13.08.0 — better
Further details — not scored
Size3.4 GB108 MB
Age rating4+4+
DeveloperTobii Dynavox LLCCentral Speech Solutions, LLC

Customer experience

TD Snap®

All ratings856 ratings
Positive77.1%
Neutral6.3%
Negative16.6%
Written reviews179 reviews
Positive30.7%
Neutral5.6%
Negative63.7%

CoreVOICE

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

Bugs and requests

TD Snap®

Reported bugs

4 issues
  • Voice disappearing after updates
  • Crashes on launch
  • Incompatibility with iPad Pro
  • Inability to restore purchased content

Requested features

5 requests
  • Ability to change undo symbol
  • Link to ACCIL image database
  • Ability to set user age for appropriate vocabulary
  • More robust core vocabulary
  • Easier grammar modeling

CoreVOICE

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

TD Snap®

Subscriptions4
  • Gateway Monthly1 Month trial$4.991 Month
  • PODD Monthly1 Month trial$4.991 Month
  • Metacom Monthly1 Month trial$4.991 Month
Show 1 more
  • Speaking Upgrade Monthly1 Month trial$9.991 Month
One-time6
  • Acapela Voices$39.99
  • Nuance Voices$39.99
  • Speaking Upgrade$49.99
Show 3 more
  • METACOM Symbols$49.99
  • PODD Page Sets$149.99
  • Gateway Page Sets$149.99
None

CoreVOICE

No in-app purchases

Questions

Is TD Snap® free?
TD Snap® is free to download, with in-app purchases available.
Is CoreVOICE free?
CoreVOICE costs $49.99, with no in-app purchases.
Which has better reviews, TD Snap® or CoreVOICE?
CoreVOICE is rated higher. TD Snap® averages 4.1 out of 5 from 867 ratings, while CoreVOICE averages 5.0 from 4 ratings.
Do TD Snap® or CoreVOICE have ads?
Neither TD Snap® nor CoreVOICE shows ads.
Which is updated more often, TD Snap® or CoreVOICE?
TD Snap® ships an update every 2 months, and CoreVOICE every 5 months. Most recently, TD Snap® was updated on October 26, 2026 and CoreVOICE on October 18, 2026.

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