Comparison

Dawn AAC vs I Cannot Speak

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Dawn AAC

This app provides a symbol-based communication system for individuals with speech impairments. It allows users to tap symbols to form sentences, which are then spoken aloud with a natural voice. The app runs entirely offline, ensuring privacy and immediate use.

Highlights
  • Symbol-based sentence building
  • Natural voice output
  • Offline functionality
  • Personalized voice banking
  • Extensive symbol library
  • Customizable grid sizes
  • Switch access and eye tracking support
Features
Read full description

Dawn is a symbol-based AAC app (augmentative and alternative communication) for people who cannot rely on speech: nonspeaking and minimally verbal autistic children and adults, people with apraxia, aphasia, cerebral palsy, Down syndrome, ALS, or a recovering voice after a stroke or surgery. Tap symbols, build a sentence, and Dawn speaks it aloud in a natural, modern voice. It turns an iPhone or iPad into a speech generating device. Everything runs on the device. No account, no internet, no data collected. A VOICE OF YOUR OWN: Voice banking, done on the device. Record about eight seconds of speech and Dawn builds a personal voice in about half a minute. It can be the user's own voice, preserved while speech is still available, or a family member's. The recording never leaves the device. VOICE STUDIO: Over 900 natural neural voices across ages and accents, including children's voices. Shape any voice by pitch and age, or hand Dawn a recording and it surfaces the voices nearest to it. One take is enough, even a shaky or noisy one. BUILT TO BE FAST: The whole engine lives on the phone, so a tapped sentence starts speaking immediately, in an elevator, on a plane, in a school with no Wi-Fi. Speed matters in a conversation, and Dawn treats it as a feature. EVERYTHING A FULL AAC APP SHOULD HAVE 3,400+ symbols (the complete Mulberry set), plus personal photos as symbols A core vocabulary home board that stays put, with folders for food, people, feelings, places and more, and a Quick Phrases board for the sentences you say most Six grid sizes in two families (3x4, 4x6, 5x7 and 6x8, 8x10, 10x12): a word keeps its place on the board until you move it, and going up a size within a family keeps every home word in its cell Word forms and sentence starters that keep grammar one tap away Switch access: row, column or block scanning, step or auto at any speed, switch timing, an adjustable highlight. iOS Switch Control works with every button, and so do iOS Eye Tracking and dwell on the devices that offer them Typing view with word prediction and the same instant voice Message banking: record whole phrases and play them back exactly as said Profiles: each person who shares the device gets their own boards, voices, recordings and settings Partner tools: modeling mode, edit mode, Find a word, and a caregiver gate A whiteboard with six pens that can speak what is written on it Open Board Format import from other AAC systems One-tap full backups, kept in your own files VoiceOver support, Dynamic Type, hold-to-activate timing, and an easier-reading option PRIVATE BY ARCHITECTURE: Dawn has no server and no sign-in. Messages, recordings, voices, boards, and photos stay on the device. The App Privacy label says "Data Not Collected" because there is nothing to collect it with. ONE APP, BOTH DEVICES: One subscription covers iPhone and iPad. The backup device in a parent's pocket can be the primary in a pinch. Dawn is a yearly subscription with a free trial, billed through the App Store. Privacy policy: https://dawnaac.com/privacy. Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Questions or requests: support@dawnaac.com

About

I Cannot Speak

Features
Read full description

Two taps to be understood. I Cannot Speak is for people who cannot rely on speech. Type or tap what you need to say, then hold your phone up so the person in front of you can read it — or let your phone say it out loud. No setup. No sign-up. No learning a system of symbols. SHOW IT, LARGE Write a sentence and put the keyboard away. The words grow to fill the screen, big enough to read across a counter, a hospital bed, or a noisy room. Turn the phone around and you have been understood. OR SPEAK IT One tap reads your sentence aloud in a natural voice. Choose the voice you want and how fast it speaks. It works with the ring switch off, so you are heard even on silent. READY FOR WHERE YOU ARE Six situations — restaurant, medical, travel, transport, shopping and emergency — each holding the phrases that place actually needs. Tap the situation, tap the phrase. Edit any of them, or build situations of your own for the places you go. THE THINGS A GESTURE CANNOT SAY A row of everyday icons along the bottom of the home screen: water, a restroom, a charger, a pharmacy, a taxi. One tap shows the icon large with the sentence underneath, ready to speak. MY CARD Your name, conditions, allergies, medications and emergency contacts on one card you can hold up without typing anything. Useful in a waiting room, at a pharmacy counter, or any moment when explaining is the hard part. ACROSS LANGUAGES Show the same sentence in another language, large and clear. Useful abroad, and useful at home when the person in front of you speaks a different one. HELP FINDING THE WORDS Rough notes become a complete sentence. Type "water please" and get "Could I have some water, please?" On iPhone 15 Pro and newer this runs on the device itself. Everywhere else it uses a private connection — and if there is no connection at all, I Cannot Speak falls back to built-in phrases so you are never left with nothing. PLAN A DAY Describe what your day looks like and I Cannot Speak suggests the phrases it will need, ready before you are standing there. BUILT TO BE TRUSTED Your saved phrases, your name and photo, and everything on My Card stay on your phone. What you send to be reworded or translated is not kept — not by us, and not by the company whose model does the work. No ads, no analytics, no tracking, nothing sold. WHO IT IS FOR People living with ALS, aphasia, a stroke, Parkinson's, autism, selective mutism, a laryngectomy, or a throat injury. People recovering from surgery. Anyone whose voice has gone quiet, for a week or for good. SUBSCRIPTION I Cannot Speak is $4.99 a month or $29.99 a year, and starts with a free trial. Every feature is included in both plans — there is no cut-down version. Cancel any time in Settings. Privacy policy: https://icannotspeak.vercel.app/privacy Support: https://icannotspeak.vercel.app/support

Screenshots

Dawn AAC4 screens
I Cannot Speak4 screens

Verdict

The call

The clearest difference is update cadence: I Cannot Speak at monthly against Dawn AAC's every 3 months. On price, ads, in-app purchases 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

Both are free to download. Dawn AAC sells 2 in-app purchases, starting at $6.99 per 7 days and I Cannot Speak sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Dawn AAC ships an update every 3 months, I Cannot Speak monthly. Both last shipped on October 31, 2026.

Scorecard1 real difference · 9 level
Dawn AAC versus I Cannot Speak: the parameters behind the verdict, then further details
ParameterDawn AACI Cannot Speak
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 3 monthsMonthly — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscription—
DevicesiPhone, iPad — betteriPhone
Requires iOS17.0 — better18.0
Further details — not scored
Size381 MB18 MB
Age rating4+4+
DeveloperBest Inc., TheSakib Shaikh

In-app purchases

2 purchases

Dawn AAC

Subscriptions2
  • Dawn AAC Weekly3 Days trial$6.997 Days
  • Dawn AAC Yearly3 Days trial$249.001 Year
2 purchases

I Cannot Speak

Subscriptions2
  • I Cannot Speak Pro Monthly14 Days trial$4.991 Month
  • I Cannot Speak Pro Yearly14 Days trial$29.991 Year

Questions

Is Dawn AAC free?
Dawn AAC is free to download, with in-app purchases available.
Is I Cannot Speak free?
I Cannot Speak is free to download, with in-app purchases available.
Do Dawn AAC or I Cannot Speak have ads?
Neither Dawn AAC nor I Cannot Speak shows ads.
Which is updated more often, Dawn AAC or I Cannot Speak?
Dawn AAC ships an update every 3 months, and I Cannot Speak monthly. Most recently, Dawn AAC was updated on October 31, 2026 and I Cannot Speak on October 31, 2026.

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