Most Widely Used AAC Symbols

There was a post in the AAC for SLP Facebook group today where a member asked the following question:

“Hi all! I’m not sure there is even an answer for this question, but I’m going to go for it anyway. 😉 Is there one symbol set that is most widely used? I am only familiar with SymbolStix and PCS. To be specific, I’m not looking for people’s preferences… I am truly just interested on any data/study that demonstrate(s) which is most widely used.😊

I hadn’t ever seen a list or data/study that had this exact info. To truly know which symbol set is most widely used for high tech AAC you’d need to have data regarding sales of SGDs, sales of AAC apps, sales of symbol sets via in-app purchases and data regarding their actual use. My guess is this is going to vary greatly across the world and influenced by both the language(s) needed by a particular AAC user and the opinions of SLPs / SLTs about certain apps or SGDs.

To truly know which symbol set is most widely used for paper-based AAC you’d need to have data regarding sales and subscriptions and then a way to determine actual use for AAC vs. all the other possible uses for those symbols.

See this separate post for info about Apps & Websites to Create Materials with Symbols:

But it sparked my curiosity about what symbol sets are either included or available via in-app purchase in iOS AAC apps. So I looked through my vast AAC app collection and came up with the following list of symbol sets.

Based on the data that I collected, SymbolStix appears to be the most widely used (used in the most apps, available in 7 of the top 10 iOS symbol-based AAC apps – denoted by (*) in the lists below & available in traditional SGDs)

PCS symbols are commonly used (available in 6 of the top 10 iOS symbol-based AAC apps – denoted by (*) in the lists below). Especially if you factor in paper-based AAC systems like PODD and their use in traditional SGDs)

Widgit is more commonly used in the UK than the USA (available in 3 of the top 10 iOS symbol-based AAC apps – denoted by (*) in the lists below & traditional SGDs)

Minspeak symbols (and the closely associated symbols used in LAMP Words for Life) are only used in particular SGDs and that app but those are widely used.

More info about the Top 10 iOS Symbol-Based AAC apps:

My Data:


1. aacorn+

2. Alexicom

3. Avaz (*)

4. Bridge Communication

5. Clicker Communicator (*)

6. CoughDrop (can add-on) (*)

7. GoTalk Now / GoTalk Now Plus (*)

8. Grid 3 on SmartBox SGDs (also available on other SGDs)

9. Grid for iPad (*)

10. Grid Player

11. Proloquo2Go (*)

12. simPODD

13. So Much 2 Say

14. Sono Flex

15. Talk Tablet

16. TouchChat with WordPower (*), also available on Saltillo SGDs


1. Chatable

2. Clicker Communicator (*)

3. CoughDrop (can add-on) (*)

4. GoTalk Now (as in-app purchase) (*)

5. Grid 3 on SmartBox SGDs (also available on other SGDs)

6. Grid for iPad (*)

7. Snap Core First (also available on Windows devices and Tobii Dynavox SGDs) (*)

8. TouchChat with WordPower (as in-app purchase) (*), also available on Saltillo SGDs


1. Clicker Communicator (*)

2. GoTalk Now / GoTalk Now Plus (as in-app purchase) (*)

3. Grid 3 on SmartBox SGDs (also available on other SGDs)

4. Grid for iPad (*)

Open Source Symbols (most available on this website:

1. Cboard

2. ChatterBoards

3. CommBoards

4. CoughDrop (*)

5. ElineSpeaks

6. Leeloo

7. LetMeTalk

8. MyTalk

9. PhotoVOCA

10. Posco

11. SpeakProse (emojis)

12. SymboTalk


1. Clicker Communicator (*)

GoTalk Image Library:

1. GoTalk Now / GoTalk Now Plus (*)


1. CoughDrop (*) (can sync with your LessonPix account).

LessonPix is also widely used to make printed AAC options.

MetaCom (used fairly frequently in Germany)

1. GoTalk Now / GoTalk Now Plus (as in-app purchase) (*)

2. MetaTalkUS

3. Snap Core First (as in-app purchase) (*)


1. Unity on Accent SGDs

Multi-Meaning symbols derived from Minspeak & Unity:

1. LAMP Words for Life (*), also on Accent SGDs


1. Talk Suite Pro

Pics for PECS:


Pixon (also related to Minspeak/ Unity):

1. TouchChat with WordPower (as in-app purchase) (*), also available on Saltillo SGDs

Smarty Symbols:

1. ASD AAC Bestie Communicator

2. Expressive

3. Speak for Yourself (*)

4. Quick Talk AAC

Smarty Symbols are also widely used to make printed AAC options, in products on Teachers Pay Teachers and in a few non-AAC apps.

There are other AAC apps and SGDs that have their own unique symbols:

1. CardTalk

2. CoreVoice

3. EESpeech

4. Fluent AAC

5. Grace 4

6. Lingraphica (apps and their SGDs)

7. My First AAC

8. Niki Talk

9. PAROL Mini

10. PictoMaker

11. SoundingBoard

12. Talking Mats

13. Talk to Me

14. Top Taps Speaks

15. Verbal Me

16. Visuals2Go

17. Voice4u

18. Wayword

This website has a nice catalog of all (or at least most) of the various symbol sets. Most are not widely used. I think it’s interesting to read the history behind how/why symbols were developed:

It’s important to keep in mind… Symbol sets are like any other feature in AAC. There isn’t any “one size fits all” and to my knowledge there isn’t any research supporting the idea that any particular symbol set is superior to another. This is especially true when considering symbols that meet specific needs, user preferences, culturally relevant, etc…

See this quote from PrAACtical AAC: “There is no empirical evidence that one type of symbol is superior to another for all AAC clients, but there may certainly be differences for a specific individual. That’s why it is a best practice to evaluate the kind of symbol to use as part of an AAC assessment rather than picking one at random or using one based on our own convenience.”

And this post from NWACS:

The best way to reach me with any questions is via messaging on the OMazing Kids Facebook page: That way AAC related messages don’t get lost among the spam in my e-mail

Angela Moorad, MS, CCC-SLP, Founder of OMazing Kids, LLC OMazing Kids AAC Consulting

Teachers Pay Teachers Store:


Personal Professional Facebook Page (linked to OMazing Kids): (adding“friends” who have a direct role in AAC or Assistive Technology – AAC / AT app or product developers, AAC / AT consultants, SLPs who specialize in AAC, other professionals who specialize in AAC or AT, etc.)

OMazing Kids AAC Consulting Facebook Page:

AppPeeps Facebook Group:






50% off the amazing iESLp app (create your own interactive and printable activities & visual supports)



{Big App Sale} The iESLp app allows you to make interactive activities for use on the iPad or printable activities and visual supports for use off the iPad. This app is a great bargain on sale for only $9.99 considering that you could easily spend that amount on one or two items on Teachers Pay Teachers. This app is packed full of amazing features:

  • 24,000 Symbolstix symbols and pictures built in
  • In-app purchase of 3,800+ Scrapin Doodle clip art images
  • Import photos from albums and use existing clip art from your favorite graphic designer
  • Build activities to meet your needs from an assortment of grids, boards, game board, visual tools and templates or design your own
  • Attach voice recording to text or symbols
  • Create activity sheets, handouts and more
  • Make two-dimensional assignment sheets come alive with the interactive and manipulative features
  • Depict action by moving the symbols around
  • Create movable activities like matching, sorting, counting, story-writing activities and more
  • Easily create goal content or curriculum-related material, articulation sets, minimal pairs sets, etc.
  • Students and clients can make their own boards, activity sheets, games, etc.
  • Create goal-targeted vocabulary or sound cards with voice-recording features
  • Visual strategy boards come alive using the built-in features
  • Share assignment and activity sheets through air drop, text messaging, email and social media
  • Print from within the program using an air printer

App Store link:

iESLp by Irmgard Raubenheimer, iPad only, usually $19.99 -> currently $9.99 (50% off) (price in USA App Store. Prices in other areas vary depending on the exchange rate)

According to the app developer’s Facebook page, the app will only be offered at the sale price for a couple of days so grab it quickly and double check prices before purchasing


The in app purchases are for extra clip art. The SymbolStix symbols are all already included in the app. See this post for details about why they included both:


See tutorials & tons of ideas for items you can create with this app on their website & Facebook page:











These are just a few of the endless possibilities. I’m in the process of trying out the app and will be posting pics of my creations in the future. Be watching my Facebook page 😃


Angela Moorad, MS, CCC-SLP
Speech-Language Pathologist
Founder of OMazing Kids, LLC – inclusive wellness & educational activities for kids of all abilities
Facebook Messaging for OMazing Kids:
AppPeeps Facebook Group:
Boardmaker Share:
Angela Moorad is the founder of OMazing Kids, LLC and is an ASHA certified & licensed pediatric Speech-Language Pathologist and Kids Yoga Teacher with 27 years experience working in a variety of settings (early intervention, schools, teletherapy & a nonprofit pediatric rehab hospital for children with developmental disabilities). She is an app beta tester for educational & therapeutic app developers and loves sharing info about great apps, products, books & toys to use with kids of all abilities.
{please ignore any ads that may appear below. This is a free blog and I don’t have any control over ads nor do I profit from them}