Transitioning from PECS to an AAC App

PECS (Picture Exchange Communication System) is where many families start their AAC experience. It's tangible, low-tech, and structured. For a lot of children, it's the first time they experience the power of intentional communication.

But PECS has limits. The vocabulary is finite. The physical cards get lost, damaged, or outgrown. And as your child's communication needs grow, a binder full of picture cards can't keep up.

That's when families start looking at tablet-based AAC apps. The transition can be smooth if you plan for it. This guide walks you through when to move, how to do it, and what to avoid along the way.

What PECS Teaches (and Why It Matters)

Before discussing the transition, it's worth recognizing what PECS has already taught your child. These skills transfer directly to app-based AAC.

Cause and effect in communication

The fundamental lesson of PECS is: "When I give you this picture, something happens." Your child learned that their action produces a result. That understanding is the foundation of all communication, and it carries over perfectly to tapping symbols on a screen.

Intentional communication

PECS requires the child to select a specific symbol, approach a communication partner, and hand it over. That's a deliberate, intentional communicative act. Your child already knows that communication is purposeful.

Requesting skills

Most children start PECS by learning to request. They can identify what they want, find the right symbol, and exchange it. This requesting skill maps directly onto using an AAC app.

Sentence structure (PECS Phase IV+)

If your child has progressed to Phases IV through VI of the PECS protocol, they've learned to construct sentences using a sentence strip ("I want" + item). They understand that communication can involve combining symbols in sequence. That's exactly what composing a message in an AAC app requires.

Signs Your Child May Be Ready to Transition

There's no single test for readiness. Instead, look for a pattern of signs that suggest your child has outgrown what PECS can offer.

They've mastered PECS Phases I through III

At minimum, your child should be independently selecting and exchanging pictures to request. If they're still learning the basic exchange, PECS is still the right tool. Don't rush the transition.

Their vocabulary needs are growing

If you're constantly making new PECS cards, reorganizing the binder, and still can't keep up with what your child wants to say, that's a sign. A tablet-based system offers hundreds or thousands of symbols without the physical constraints.

They're interested in technology

Does your child navigate a phone or tablet with ease? Do they understand that tapping produces a result? Motor comfort with touchscreens is a practical advantage, though it's not a requirement.

PECS is becoming physically cumbersome

A full PECS binder is heavy, takes up space, and requires the child to flip through pages to find the right symbol. If the physical demands are slowing communication down, a searchable digital system can speed things up.

They need to communicate with more people

PECS requires a communication partner who knows the system and is physically present to receive the card. An AAC app with voice output lets your child communicate with anyone, anywhere, even people who've never heard of PECS.

They're ready for more complex language

PECS supports basic requesting and some commenting, but building long, complex messages with physical cards is cumbersome. If your child is ready to say more than "I want [item]," a high-tech system gives them the tools to do it.

How PECS Skills Transfer to an AAC App

The good news is that PECS and app-based AAC share a core logic. Your child isn't starting over. They're upgrading.

The biggest change is the output. With PECS, the child hands a card to someone. With an AAC app, the child taps a symbol and the device speaks. For most children, hearing the word spoken out loud is motivating and reinforcing. It also means the child no longer needs to physically approach someone to communicate.

Step-by-Step Transition Plan

Step 1: Involve your SLP

Don't make this transition alone. Your speech-language pathologist should help you:

• Evaluate whether your child is ready
• Choose the right app
• Design the initial vocabulary layout
• Plan the transition timeline
• Set goals for the first month

If your SLP doesn't have experience with high-tech AAC, ask for a referral to one who does. The transition from PECS to an app is a specific clinical process, and expertise matters.

Step 2: Choose the app and set it up

When selecting an AAC app, look for features that support the transition from PECS:

• Visual consistency. If your child's PECS cards use a particular symbol set (like PCS or SymbolStix), choose an app that uses the same or similar symbols. Visual familiarity reduces the learning curve.
• Simple starting layout. Begin with a grid size your child can handle. If they're used to choosing from a page of 8 PECS cards, start with a 2x4 or 3x3 grid.
• Core word access. Unlike PECS, which tends to focus on nouns, a good AAC app gives prominent access to core words (want, go, more, stop, help). This is a major upgrade in communicative power.
• Voice output. This is the whole point of the upgrade. Choose a natural-sounding voice.

SabiKo offers customizable grids, natural voices, and a clean layout that makes the PECS-to-app transition straightforward.

Step 3: Mirror the PECS vocabulary first

Start by putting your child's most-used PECS symbols into the app. If they regularly request crackers, juice, iPad, swing, and bubbles, those should be on the home screen of the app.

This gives your child immediate success. They already know what these symbols mean and how to use them for requesting. The only new skill is tapping instead of handing over a card.

Step 4: Run both systems in parallel

Don't throw out the PECS binder on day one. Instead, run both systems simultaneously for a transition period.

Here's what parallel use looks like:

Week 1 to 2: Introduce the app during one or two preferred activities. Keep PECS available for everything else. Model on the app heavily. Don't require the child to use it.

Week 3 to 4: Expand app use to more activities. When the child reaches for a PECS card, gently redirect to the app. "Let's try your talker." If they resist, let them use PECS. Don't create a power struggle.

Week 5 to 8: Gradually make the app the primary system. Keep the PECS binder nearby but not in the child's immediate line of sight. Most children will naturally gravitate toward the app once they experience the speed and voice output.

Month 3+: Phase out PECS for most situations. Some families keep a small set of PECS cards as a backup for situations where the device isn't available (bath time, pool, broken tablet).

Step 5: Expand beyond PECS vocabulary

Once your child is comfortable with the app, start adding vocabulary that would have been impractical with PECS.

• Core words they didn't have access to with PECS (like, help, not, different, same)
• Describing words (big, little, yucky, funny, scary)
• Social words (hi, bye, thank you, my turn, look)
• Feelings (happy, sad, mad, scared, tired)
• Question words (where, what, who)

This is where the real power of the transition becomes apparent. Your child goes from a vocabulary of 30 to 50 PECS cards to potential access to hundreds or thousands of words. Model these new words and give your child time to explore them.

Step 6: Teach new AAC-specific skills

Some skills are unique to app-based AAC and weren't part of PECS:

• Navigating pages/folders. Your child may need to learn that tapping a category opens a new page of symbols.
• Using the message bar. Some apps let the child compose a multi-word message before pressing "speak." This is different from the PECS sentence strip but functionally similar.
• Clearing the message. Show them how to delete a word or clear the whole message.
• Scrolling. If vocabulary is organized in scrollable lists, this is a new motor skill to learn.
• Volume control. Teach them they can make their voice louder or softer.

Common Mistakes in the Transition

Mistake 1: Waiting too long

Many families stay with PECS longer than necessary because it's familiar. If your child has mastered PECS Phases I through III and their vocabulary needs are growing, the transition window is open. Don't wait for a "perfect" moment. It doesn't exist.

Mistake 2: Dropping PECS immediately

The opposite mistake. Some families get excited about the app and remove PECS overnight. This can feel like losing your voice to a child who relied on those cards. Run both systems in parallel for at least a month.

Mistake 3: Starting with too many symbols

Just because the app can display 100 symbols doesn't mean it should on day one. Start with the vocabulary your child already uses and expand gradually. A cluttered screen is overwhelming and slows motor learning.

Mistake 4: Not modeling on the app

This is the most common mistake, period. Parents model PECS by exchanging cards alongside their child. They need to do the same thing with the app. Tap symbols while you talk. Show your child how the app works in real conversations, not just in structured teaching sessions. If you need help building this habit, our guide on AAC modeling at home walks through the process step by step.

Mistake 5: Treating the app as a requesting-only tool

PECS often gets stuck in requesting mode. "I want cookie." "I want swing." When you transition to an app, break out of this pattern deliberately. Model commenting ("That's funny"), protesting ("I don't like that"), asking questions ("Where's Dad?"), and social chat ("Hi, how are you?"). The app can do so much more than request.

Mistake 6: Forgetting to bring the device

A PECS binder goes everywhere because it's the child's communication system. The AAC device needs the same commitment. Charge it every night. Bring it everywhere. If it breaks, have a plan (backup PECS cards, a printed communication board, or a second device).

Frequently Asked Questions

How long does the transition take?

Most children complete the transition in 1 to 3 months. Some faster, some slower. The child's comfort with technology, the support they receive, and how consistently the app is modeled all affect the timeline.

What if my child prefers PECS?

Some children prefer the tangible quality of physical cards. That's fine for a while. But continue modeling on the app. As they see you and others using it, and as they experience the voice output and the expanded vocabulary, most children make the switch willingly.

Should I use the same symbols?

If possible, yes. Visual consistency helps. If your child's PECS cards use PCS symbols and the app uses a different symbol set, the adjustment period will be longer. Some apps let you upload custom images, which can bridge the gap.

Can we go back to PECS if the app doesn't work?

Absolutely. PECS is always a valid communication system. But give the app a fair trial. At least 6 to 8 weeks of consistent modeling and exposure before deciding it isn't working.

What about at school?

Coordinate with your child's school team. They need to know the transition is happening, have access to the app, and be trained in basic modeling strategies. Our guide on talking to your child's school about AAC can help with those conversations. Include AAC goals in the IEP if applicable.

Getting Started

1. Talk to your SLP about transition readiness
2. Download SabiKo for free
3. Set up the app with your child's current PECS vocabulary
4. Start modeling on the app during one preferred activity
5. Run both systems in parallel for at least a month
6. Expand vocabulary as your child gets comfortable

Your child learned to communicate with PECS. Now they're ready for a tool that can keep up with everything they have to say.

Download SabiKo free and make the switch from PECS to a full AAC system.

References

• Bondy, A., & Frost, L. (2001). The Picture Exchange Communication System. Behavior Modification, 25(5), 725-744.
• Millar, D.C., Light, J.C., & Schlosser, R.W. (2006). The impact of augmentative and alternative communication intervention on the speech production of individuals with developmental disabilities. Journal of Speech, Language, and Hearing Research, 49(2), 248-264.
• Ganz, J.B., Davis, J.L., Lund, E.M., Goodwyn, F.D., & Simpson, R.L. (2012). Meta-analysis of PECS with individuals with ASD: Investigation of targeted versus non-targeted outcomes, participant characteristics, and implementation phase. Research in Developmental Disabilities, 33(2), 406-418.
• Lorah, E.R., Parnell, A., Whitby, P.S., & Hantula, D. (2015). A systematic review of tablet computers and portable media players as speech generating devices for individuals with autism spectrum disorder. Journal of Autism and Developmental Disorders, 45(12), 3792-3804.