Comparison

TD Snap® vs Spell Tap

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

Spell Tap

This communication tool is designed for nonspeaking individuals who use spelled communication. It offers a simple interface with a stencil-like layout for easy selection of letters and numbers, and utilizes text-to-speech for spoken output. The app is fully functional offline and free of ads and in-app purchases.

Highlights
  • Stencil-like layout for easy input
  • Automatic Text to Speech
  • Offline functionality
  • No ads or in-app purchases
  • Simple user interface
  • Separated typing and history boxes
Features
Currently charting
Read full description

Spell Tap is what we like to think of as a laminate on the go, designed for and tested by nonspeaking individuals with autism who utilize spelled communication. **Utilizing Apple's built in TTS** Fully functional on iPad and iPhone Community driven Key Features: -No Ads -No internet connection is required to use the app, ensuring accessibility in various settings and situations. -No In-App Purchases, Enjoy all the features of the app without the hassle of additional costs or hidden charges. - Stencil like layout for numbers, letters, and special characters - Automatic Text to Speech with 7 voice options -Separated typing box and conversation history -Simple UI. Introducing Spell Tap – a thoughtful and user-friendly communication tool specifically designed for those who face challenges with fine motor skills. This innovative app offers a seamless and accessible way to communicate by utilizing a unique style interface that allows users to easily select letters, numbers, and common special characters without the need for intricate hand movements. The primary aim of this application is to provide a simple, yet effective alternative means of communication across a wide range of devices, enabling nonspeaking individuals to stay connected with ease. Whether you’re in need of assistance or simply looking for a more efficient method of expressing yourself, this app serves as an inclusive solution. Your feedback and suggestions are important to us – and we encourage you to share your thoughts. Our roadmap for future updates and features can be found here: https://github.com/AndImCurtis/Spell_Tap/blob/main/README.md . For any suggestions or inquiries, feel free to reach out via email at: benderson927@gmail.com. We’re excited to help you communicate more effortlessly and effectively, and we look forward to hearing from you as we continue to improve and evolve the app. Note from developer: I wanted to create a tool for nonspeaking individuals to have access to communication no matter where they were. No more searching for laminates or letterboards… We put the letterboard on the devices that we already carry with us everywhere. While this app is still in its early stages, I am open to all feedback to help shape this into an application suited for everyone who can use it.

Screenshots

Spell Tap2 screens

Verdict

The call

The clearest difference is review sentiment: Spell Tap at 100% against TD Snap®'s 31%. Spell Tap also leads on rating (5.0 vs 4.1) and in-app purchases (none vs 10). TD Snap®'s advantage is price (Free vs $5.99) and ratings volume (856 vs 2). On update cadence, ads and device support 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; Spell Tap costs $5.99 up front. TD Snap® sells 10 in-app purchases, starting at $4.99 per month. Spell Tap asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Spell Tap holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: TD Snap® has 856 ratings behind it against 2, 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 100% of Spell Tap's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 13, 2026 and October 8, 2026 respectively.

Scorecard8 real differences · 3 level
TD Snap® versus Spell Tap: the parameters behind the verdict, then further details
ParameterTD Snap®Spell Tap
PriceFree — better$5.99
Rating4.1 (856 ratings)5.0 (2 ratings) — better
Positive reviews30.7% of reviews100.0% of reviews — better
Number of ratings856 — better2
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionPaid — better
Best chart rank—#170 — better
DevicesiPadiPhone, iPad — better
Requires iOS13.0 — better18.0
Further details — not scored
Size3.4 GB72 MB
Age rating4+4+
DeveloperTobii Dynavox LLCCurtis Bender

Customer experience

TD Snap®

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

Spell Tap

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

Spell Tap

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

Spell Tap

No in-app purchases

Questions

Is TD Snap® free?
TD Snap® is free to download, with in-app purchases available.
Is Spell Tap free?
Spell Tap costs $5.99, with no in-app purchases.
Which has better reviews, TD Snap® or Spell Tap?
Spell Tap is rated higher. TD Snap® averages 4.1 out of 5 from 856 ratings, while Spell Tap averages 5.0 from 2 ratings.
Do TD Snap® or Spell Tap have ads?
Neither TD Snap® nor Spell Tap shows ads.
Which is updated more often, TD Snap® or Spell Tap?
TD Snap® ships an update every 2 months, and Spell Tap every 2 months. Most recently, TD Snap® was updated on October 13, 2026 and Spell Tap on October 8, 2026.

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