Comparison

TD Snap® vs Executive Functions

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

Executive Functions

This app offers a series of exercises designed to train and improve working memory, a key cognitive skill. It presents stimuli to memorize and then requires users to recall or discriminate between them, providing scores and evaluations based on performance.

Highlights
  • Working memory exercises
  • Stimuli memorization
  • Recall and discrimination tasks
  • Scoring and evaluation system
  • Over 200 unique cards
  • 349 automatically generated exercises
Features
Read full description

Executive Functions are a set of cognitive processes that allows to manage complex or unusual situations successfully. They regulate analysis, planning, control and coordination of the cognitive system, and control the activation and use of knowledge processes. It is widely believed that Executive Functions play a fundamental role in 'smart' behavior and that they can be trained and improved through specific exercises. Main executive functions are the acquisition and updating of Working Memory, Cognitive Flexibility and Behavioral Inhibition. The "Executive Functions" series of apps is dedicated to the exercise and improvement of these skills. The first app, which is presented here, is dedicated to 'Working Memory', and proposes many exercises to verify, improve and use the ability to remember, recall and discriminate in the short term some elements that can be images, colors, words, voices or combinations thereof. Each exercise/level is divided into two stages: during the first, a set of stimuli is presented which must be memorized. Then, in the second stage it is required to use, list and/or discriminate between the elements presented. At the end of each exercise the app shows the result obtained and assigns scores and evaluations taking into account the relative difficulty, the number of elements proposed, the time taken and so on. "Executive Functions" contains over 200 "cards" and their names, written and recorded with a female and male voice. The ‘cards’ represent animals, food, means of transport, numbers, etc. and are used to propose 349 exercises/levels generated and managed automatically for a very high number of possible combinations.

Screenshots

Executive Functions4 screens

Verdict

The call

The clearest difference is price: TD Snap® at Free against Executive Functions's $1.99. TD Snap® also leads on update cadence (every 2 months vs every 13 months) and ratings volume (810 vs 1). Executive Functions's advantage is in-app purchases (none vs 10) and review sentiment (50% vs 30%). On ads and iOS requirement 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; Executive Functions costs $1.99 up front. TD Snap® sells 10 in-app purchases, starting at $4.99 per month. Executive Functions asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

TD Snap® holds the better App Store score, 4.2 against 4.0. That said, the two scores are not equally well evidenced: TD Snap® has 810 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 30% of TD Snap®'s written reviews are positive against 50% of Executive Functions's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

TD Snap® ships an update every 2 months, Executive Functions every 13 months. The most recent releases landed on September 21, 2026 and September 12, 2026 respectively.

Scorecard8 real differences · 2 level
TD Snap® versus Executive Functions: the parameters behind the verdict, then further details
ParameterTD Snap®Executive Functions
PriceFree — better$1.99
Rating4.2 (810 ratings) — better4.0 (1 ratings)
Positive reviews29.6% of reviews50.0% of reviews — better
Number of ratings810 — better1
Update frequencyEvery 2 months — betterEvery 13 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionPaid — better
DevicesiPadiPhone, iPad, iPod — better
Requires iOS13.012.1 — better
Further details — not scored
Size3.4 GB113 MB
Age rating4+4+
DeveloperTobii Dynavox LLCRoberto De Lorenzo

Customer experience

TD Snap®

All ratings810 ratings
Positive77.5%
Neutral6.0%
Negative16.4%
Written reviews142 reviews
Positive29.6%
Neutral6.3%
Negative64.1%

Executive Functions

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

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

Executive Functions

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

Executive Functions

No in-app purchases

Questions

Is TD Snap® free?
TD Snap® is free to download, with in-app purchases available.
Is Executive Functions free?
Executive Functions costs $1.99, with no in-app purchases.
Which has better reviews, TD Snap® or Executive Functions?
TD Snap® is rated higher. TD Snap® averages 4.2 out of 5 from 810 ratings, while Executive Functions averages 4.0 from 1 ratings.
Do TD Snap® or Executive Functions have ads?
Neither TD Snap® nor Executive Functions shows ads.
Which is updated more often, TD Snap® or Executive Functions?
TD Snap® ships an update every 2 months, and Executive Functions every 13 months. Most recently, TD Snap® was updated on September 21, 2026 and Executive Functions on September 12, 2026.

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