Comparison

TD Snap® vs Boo Articulation Helper

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

Boo Articulation Helper

This app helps young children improve speech sounds through interactive practice. It visually demonstrates mouth movements for articulation and offers a minigame for sound identification. Developed by a speech-language pathologist, it's designed for children aged 3-6 with speech difficulties or English language learners.

Highlights
  • Visual mouth movement demonstrations
  • Spontaneous speech sound repetition
  • Phonological awareness training
  • Record and playback for comparison
  • Minigame for sound identification
  • Customizable articulation speed
Features
Currently charting
Read full description

-- This is Boo! -- Boo helps children practice speech sounds that they need to improve. He is designed to entice spontaneous repetition of individual speech sounds and simple syllables. At the same time, he enforces helpful phonological awareness, by showing what actions happen in the mouth during articulation. The app is developed by a certified Speech-Language Pathologist. The children can use the app all by themselves or together with an adult. When the child simultaneously uses multiple senses (vision and hearing) to imitate and repeat it becomes easier to overcome obstacles and improve its articulation skills. -- Who is Boo for? -- The app is developed for children aged approximately 3 to 6 years old being in, or need to be in contact with a speech-language pathologist or therapist due to speech difficulties. It provides a motivating way to: • practice single speech sounds; • practice voiced versus voiceless consonants; • practice joining speech sounds together to create simple words Boo may be a stepping stone to better pronunciation! Boo can also be a helpful pronouncing learning tool for those - young or old - who are currently learning the English language. The app is also great for practicing the link between letters and sounds in early reading practice. -- What can you do? -- Sounds in the paid app version are consonants P B T D K G S Z SH CH F V M N L W, essential to speech development. There are also five monophthong vowels, depending on what English dialect (American or British) you have chosen in the settings. In the app, you put one or two sound cards in corresponding fields, building a sound or a simple two-letter syllable. Then, Boo articulates the sound or syllable, clearly showing mouth, tongue and vocal folds movements during articulation. This may be enticing for the child to imitate and recognize how the sound syllables are made by tongue and lips. You can record and playback your own sound production for comparison. You can also make Boo go slow, repeat successively, or articulate sound noiselessly. Behind a parental gate you can disable or enable sounds as well as read instructions and tips from the SLT. There is also a minigame in which you can practice identifying different speech sounds as Boo articulates them, either with sound or muted using only visual cues. (The images themselves on the sound cards, not necessarily the image's first letter, represent the actual speech sound that Boo makes. For example, the hi-hat represents the sound T because it sounds like a T.) -- Said about Boo: -- "They were extremely pleased with Boo and the boy is perceived by the parents as more intelligible than before. His training motivation as also improved." - David, Speech-Language Pathologist "It works really great! We are so pleasantly surprised by how encouraged the kids get to try the different sounds as soon as they see Boo." - Elin, Speech-Language Pathologist --- NOTE: There is a free, lite try-before-you-buy version with a few speech sounds and limited functionality. If you are uncertain if this version is useful, try the lite version first. If the child then interacts and spontaneously imitates Boo, then it could be worthwhile to purchase the paid version. --- Boo Articulation Helper is developed by a speech and language therapist/pathologist with therapeutic experience with developmental verbal dyspraxia or articulation/phonological impairments. The app is tested by eight children in their homes, aged 3-6 years, seeing a SLP on a regular basis. The try-outs have shown an improvement of training motivation and spontaneous repetition of speech sounds in a way that proved more difficult with other training material and methods (undocumented). The app is developed to be used on an iPad or tablet as it is easier to handle with little children's fingers - although it also compatible with smaller screens. Please rate the app! That helps others to determine a purchase!

Screenshots

Boo Articulation Helper4 screens

Verdict

The call

The clearest difference is price: TD Snap® at Free against Boo Articulation Helper's $7.99. TD Snap® also leads on rating (4.1 vs 3.3) and ratings volume (877 vs 19). Boo Articulation Helper's advantage is in-app purchases (none vs 4) and review sentiment (50% vs 31%). On update cadence, 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; Boo Articulation Helper costs $7.99 up front. TD Snap® sells 4 in-app purchases, starting at $4.99 per month. Boo Articulation Helper asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

TD Snap® holds the better App Store score, 4.1 against 3.3. That said, the two scores are not equally well evidenced: TD Snap® has 877 ratings behind it against 19, so its average is the more settled of the two. Written reviews complicate that: 31% of TD Snap®'s written reviews are positive against 50% of Boo Articulation Helper'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, Boo Articulation Helper monthly. Both last shipped on November 6, 2026.

Scorecard8 real differences · 3 level
TD Snap® versus Boo Articulation Helper: the parameters behind the verdict, then further details
ParameterTD Snap®Boo Articulation Helper
PriceFree — better$7.99
Rating4.1 (877 ratings) — better3.3 (19 ratings)
Positive reviews30.7% of reviews50.0% of reviews — better
Number of ratings877 — better19
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionPaid — better
Best chart rank—#152 — better
DevicesiPadiPhone, iPad, iPod — better
Requires iOS13.012.0 — better
Further details — not scored
Size3.4 GB21 MB
Age rating4+4+
DeveloperTobii Dynavox LLCThomas Ljungblad

Customer experience

TD Snap®

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

Boo Articulation Helper

All ratings19 ratings
Positive57.9%
Neutral5.3%
Negative36.8%
Written reviews16 reviews
Positive50.0%
Neutral6.3%
Negative43.8%

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

Boo Articulation Helper

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 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
None

Boo Articulation Helper

No in-app purchases

Questions

Is TD Snap® free?
TD Snap® is free to download, with in-app purchases available.
Is Boo Articulation Helper free?
Boo Articulation Helper costs $7.99, with no in-app purchases.
Which has better reviews, TD Snap® or Boo Articulation Helper?
TD Snap® is rated higher. TD Snap® averages 4.1 out of 5 from 877 ratings, while Boo Articulation Helper averages 3.3 from 19 ratings.
Do TD Snap® or Boo Articulation Helper have ads?
Neither TD Snap® nor Boo Articulation Helper shows ads.
Which is updated more often, TD Snap® or Boo Articulation Helper?
TD Snap® ships an update every 2 months, and Boo Articulation Helper monthly. Most recently, TD Snap® was updated on November 6, 2026 and Boo Articulation Helper on November 6, 2026.

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