A mom named Priya in Austin emailed us a screenshot of her son's iPad home screen last month. Two apps sat side by side: Proloquo2Go and LittleWords. "I'm confused," she wrote. "My SLP says Ravi needs AAC. My neighbor says this Buddy character is basically the same thing. Are they? Because if they are, I don't want to spend months fighting insurance." Her message was polite, but the frustration underneath was easy to read. Ravi is four, with about six spoken words, and every month without reliable communication is a month he can't tell his parents what he wants for breakfast.
The honest answer to Priya's question is that these tools aren't the same thing, not even close, and mixing them up is actively hurting families.
LittleWords is a speech-practice companion built around an AI character (Buddy) that a child talks with for about ten minutes a day. An AAC device is a communication system a child uses to talk to the actual people in their life. LittleWords is not AAC, isn't a substitute for it, and shouldn't be the primary communication tool for a child who doesn't speak. If your child needs AAC, get a real AAC system. LittleWords can sit alongside it, but it never replaces it. That's the whole reason this piece exists: the question keeps coming up, and the distinction matters too much to leave fuzzy.
What LittleWords actually does
LittleWords is an app built around Buddy, an AI character. The child opens it, has a short conversation or play session, and the app leans on techniques (parallel talk, self-talk, expansion, expectant waiting) that mirror how a play-based speech-language pathologist runs a session. Buddy is designed for neurodivergent kids: the pacing is slower than typical kid apps, the character follows the child's lead, and interactions stay play-based rather than drill-based. Sessions run about ten minutes, and daily or near-daily use is recommended. LittleWords is COPPA compliant, and voice data isn't used to train external models. Think of it like a batting cage. You go there to practice your swing. You don't play the actual game there.
What an AAC device actually does
An AAC device is a communication system the child uses with the real people in their life. They tap or select symbols, the device speaks the words, and the conversation happens between the child and another person, with the device as the medium. Examples include:
- Proloquo2Go on an iPad
- LAMP Words for Life on a dedicated device or iPad
- TouchChat with WordPower
- CoughDrop on tablet or browser
- PECS (low-tech, paper-based)
- Dedicated speech-generating devices from PRC, Tobii Dynavox, etc.
AAC gets funded through insurance, Medicaid, schools, or out of pocket, and choosing one requires an evaluation by an SLP trained in AAC. It's not something you pick based on app store reviews. A child who uses AAC needs it because they can't reliably communicate without it. It isn't a nice-to-have. It's their voice.
Practice versus communication
With LittleWords, the child talks to an AI character for practice; the other party isn't a real person. With AAC, the child talks to real people using a vocabulary system: a parent, a sibling, a friend, a teacher, anyone. A child using AAC needs it the way you need your mouth. A child using LittleWords is doing reps on emerging verbal speech. Mixing the two up is a bit like confusing a language-learning subscription with actually living in the country where you need that language to survive.
Using both at once
A child whose primary communication system is AAC can still use LittleWords as a daily practice tool for verbal speech that's emerging alongside it. The AAC handles daily life: requesting, commenting, protesting, talking to family. LittleWords handles ten minutes of practice with Buddy. The two aren't competing. A family can have both, the same way a child can have glasses for seeing and workbooks for reading practice. Neither one replaces the other.
Why we keep hammering this point
The AAC community has been burned repeatedly by companies that overpromise: apps claiming to "replace" AAC, apps that treat verbal speech as the real goal and AAC as a temporary crutch, apps that leave families unsure whether their child needs real AAC or whether a practice tool will do. We don't want to be one of those companies. If your child is non-speaking or minimally verbal and you're wondering whether LittleWords is enough, it isn't. Get an evaluation, get the device, and consider LittleWords later, if it fits, as a supplement for emerging verbal speech, never as the primary way your child communicates. A child who needs AAC and doesn't get it because a family bought an app instead loses months or years of communication access. That happens constantly, which is why we keep saying this.
A few scenarios, spelled out
If your toddler has fewer than ten words and you haven't pursued AAC yet, that's an AAC evaluation waiting to happen: call early intervention or an AAC-trained SLP and start the process now. LittleWords might enter the picture later as a supplement, but it isn't the answer here.
If your child already has AAC and is also developing some verbal speech, LittleWords can be a useful supplement for that verbal practice layer, while the AAC stays in charge of daily communication.
If your child is verbal with speech goals like articulation, vocabulary, or functional language, that's LittleWords' main use case. This child doesn't need AAC, and LittleWords offers ten minutes of play-based practice toward those goals.
If your child is autistic and verbal and you want to support language development, LittleWords fits well, AAC may not be needed, and you can use it daily alongside whatever other speech work your family is doing.
If your child uses AAC and doesn't speak, LittleWords probably isn't the right tool. Their communication runs through AAC, and a verbal-speech practice app isn't the priority. Focus on AAC implementation, modeling, and rich communication contexts instead.
What we built, and what we deliberately didn't
LittleWords is built for kids who have some verbal speech (or emerging verbal speech) and need a practice tool that follows their lead, uses ND-affirming techniques, stays play-based rather than drill-based, respects neurodivergent processing time, offers predictable and calm interaction, and adds about ten minutes of language work a day. Outside that use case, it may not be the right tool, and we'd rather tell you that than let you find out the hard way.
We haven't built LittleWords to be an AAC system, a replacement for a speech therapist, a substitute for human interaction, a diagnostic tool, a primary communication mode for non-speaking kids, or a "cure" for anything. If you see marketing from any company blurring these lines, be skeptical. AAC is AAC. Therapy is therapy. Practice tools are practice tools. None of them are interchangeable.
When to bring in a professional
If you're unsure whether your child needs AAC, an SLP trained in AAC can evaluate and recommend, and that clinical evaluation should drive the decision, not an app. If you already have AAC and are wondering whether LittleWords fits as a supplement, the SLP who knows your child is the right person to ask.
Will using LittleWords keep my child from learning AAC? No, but neither should substitute for the other. If AAC is appropriate, get AAC, and treat LittleWords as a separate tool used alongside it.
Why are you so emphatic that LittleWords isn't AAC? Because confusing the two harms families. A child who needs AAC and doesn't get it because the family used a practice app instead loses months or years of communication access, and we don't want to add to that confusion.
Is LittleWords cheaper than AAC? They're not really comparable. AAC is often funded through insurance or Medicaid (frequently free to families with documentation), or runs roughly $250 to $300 for app-based AAC out of pocket. LittleWords is free to download on the App Store. The real difference isn't price, it's function.
Can my child use Buddy as their voice? No. Buddy is a character the child talks to for practice, not a voice the child speaks through to other people. AAC provides voice; LittleWords provides practice.
Will LittleWords work for my non-speaking autistic child? Probably not as a primary tool. A non-speaking child needs AAC for daily communication. LittleWords could supplement emerging verbal speech if there is some, but it doesn't answer the communication need itself.
For more on this, see our AAC for autism hub, the pillar guide on speech therapy at home for autistic kids, and our pieces on whether AAC stops a child from talking and common AAC myths. You might also browse our speech app reviews and comparisons, or read further on 504 plans versus IEPs for speech delay, apraxia of speech versus phonological disorder, whether speech therapy apps are worth it, our Articulation Station review, meltdowns versus tantrums, our roundups of the best speech therapy apps for autistic kids in 2026 and a second look at the same topic, and how speech delay and autism differ by gender.