AACtive vs Prism
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AACtive
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AACtive is an augmentative and alternative communication (AAC) app for people who cannot speak or use their hands freely. It can be controlled entirely with your eyes — using proprietary gaze-tracking technology based on the TrueDepth camera — or by touch. KEY FEATURES • Eye-gaze control: look at a button to activate it (dwell technology). Quick calibration takes about 20 seconds. • Touch mode: full functionality with no calibration — for users and caregivers. • Communication boards: quick dialog (yes/no), wellbeing and needs — with clear symbols and speech synthesis. • Pain assessment: a 0–10 scale and pointing to where it hurts, spoken as full sentences. • On-screen keyboards: QWERTY, alphabetical and modular — type and speak any message. • Everything is read aloud in Polish, English or German. PRIVACY Camera and face data are processed on the device only and never leave it. The app has no accounts, no ads and no analytics. TRY IT FREE A 7-day demo with no payment details required. Full access: weekly or monthly subscription (with a 3-day free trial) or a one-time lifetime purchase. Eye-gaze control requires a device with a TrueDepth camera. Touch mode works on any device. AACtive is a communication support tool — it is not a medical device or an emergency system. Terms of Use (EULA): https://assistech.eu/aactive/terms-of-use-en.html Privacy Policy: https://assistech.eu/aactive/privacy-policy-en.html
Prism
This app assists nonverbal individuals in communicating by tapping pictures to form spoken sentences. It supports 25 languages and offers features like word prediction, customizable boards, and on-device AI for privacy. Emergency communication and crisis phrases are always free.
- Picture-based sentence building
- Speech output in 25 languages
- On-device AI for privacy
- Offline functionality
- Apple Watch integration
- Customizable vocabulary and grids
- Hands-free input options
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Prism AAC helps nonverbal children and adults talk. Tap pictures, build sentences, and hear them spoken aloud — in 25 languages, on iPhone, iPad and Apple Watch. PRISM AAC SUBSCRIPTION Prism AAC is a subscription app: US$4.99 per month, with a 2-week free trial for new subscribers. Subscribe in the app with your Apple Account. Your subscription is linked to a free Synalux account, which you can create in one tap with Sign in with Apple, so the same subscription also works in the web app. Emergency communication, crisis phrases and bedside cards always stay free, with or without a subscription. Your subscription includes communication boards with 22 categories, a keyboard with word prediction, saved phrases, device voices and cached speech, on-device AI, visual schedules and therapeutic games. Each month it also includes 50,000 newly generated natural-voice speech characters and 100 cloud AI requests. Cached playback and device voices never use this allowance. The allowance resets on the first day of each month (00:00 UTC), and there are no overage charges. No ads. No data harvesting. Payment is charged to your Apple Account when you confirm the purchase, or when the free trial ends. The subscription renews automatically each month unless it is cancelled at least 24 hours before the end of the current period. You can manage or cancel it in your Apple Account settings. The price in your country is shown in the app before you subscribe. WHY PRISM AAC - Privacy first: on-device AI keeps your words on your device - Works offline: boards, saved phrases and cached speech need no connection - Apple Watch: communicate directly from your wrist - 25 languages, including Simplified, Traditional and Hong Kong Chinese - Customizable vocabulary, grid size, themes and motor accommodations - Hands-free input: head tracking, switch scanning, gestures and voice - Caregiver tools: schedules, notes, insights and a caregiver PIN Terms of Use: https://synalux.ai/terms Privacy Policy: https://synalux.ai/privacy
Screenshots
Verdict
The clearest difference is update cadence: Prism at every 5 days against AACtive's every 2 months. Prism also leads on iOS requirement (16.0 vs 18.0). 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
Both are free to download. AACtive sells 3 in-app purchases, starting at $3.99 per 7 days and Prism sells 1 in-app purchase, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
AACtive ships an update every 2 months, Prism every 5 days. The most recent releases landed on October 28, 2026 and November 5, 2026 respectively.
| Parameter | AACtive | Prism |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (3 ratings) — better |
| Number of ratings | — | 3 — better |
| Update frequency | Every 2 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Subscription |
| Devices | iPhone, iPad | iPhone, iPad, Apple Watch — better |
| Requires iOS | 18.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | AssisTech Sp. z o.o. | Synalux LLC |
In-app purchases
AACtive
- Weekly Plan$3.997 Days
- Monthly Plan3 Days trial$8.991 Month
- Lifetime Plan$34.99
Prism
- Prism AAC Cloud14 Days trial$4.991 Month









