Comparison

AACtive vs Prism

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

Head to head
About

AACtive

Features
Read full description

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

About

Prism

This communication app provides on-device AI and supports 12 languages, offering a private and accessible way for nonverbal users to express themselves. It functions fully offline and can be controlled from an Apple Watch, making communication possible anywhere, anytime.

Highlights
  • On-device AI
  • Apple Watch support
  • 12 languages
  • Offline functionality
  • Customizable vocabulary
  • No subscriptions or ads
Features
Read full description

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. Core communication is free and works without an account or an internet connection: communication boards with 22 categories, a keyboard with word prediction, saved phrases, device voices and cached speech, on-device AI, visual schedules, therapeutic games and emergency communication. No ads. No data harvesting. Your child's voice never depends on WiFi. PRISM AAC CLOUD — optional subscription US$4.99 per month adds a monthly allowance of 50,000 newly generated natural-voice speech characters and 100 cloud AI requests. Cached playback and device voices never use the allowance. The allowance resets on the first day of each month (00:00 UTC), and there are no overage charges. The same subscription works on iOS and on the web with one account. Boards, saved phrases, cached speech, device voices, on-device AI and emergency communication stay available without a subscription and after one ends. Payment is charged to your Apple Account when you confirm the purchase. The subscription renews automatically each month unless it is cancelled at least 24 hours before the end of the current period, and it can be managed or cancelled in your Apple Account settings after purchase. 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

AACtive4 screens
Prism4 screens

Verdict

The call

The clearest difference is in-app purchases: Prism at none against AACtive's 3. Prism also leads on update cadence (every 3 days vs every 2 months) and iOS requirement (16.0 vs 18.0). On price, ads 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. AACtive sells 3 in-app purchases, starting at $3.99 per 7 days. Prism asks for nothing beyond the download.

UpkeepUpdate frequency

AACtive ships an update every 2 months, Prism every 3 days. The most recent releases landed on October 9, 2026 and October 19, 2026 respectively.

Scorecard3 real differences · 6 level
AACtive versus Prism: the parameters behind the verdict, then further details
ParameterAACtivePrism
PriceFreeFree
Rating—5.0 (3 ratings) — better
Number of ratings—3 — better
Update frequencyEvery 2 monthsEvery 3 days — better
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPadiPhone, iPad, Apple Watch — better
Requires iOS18.016.0 — better
Further details — not scored
Size7 MB24 MB
Age rating4+4+
DeveloperAssisTech Sp. z o.o.Synalux LLC

In-app purchases

3 purchases

AACtive

Subscriptions2
  • Weekly Plan$3.997 Days
  • Monthly Plan3 Days trial$8.991 Month
One-time1
  • Lifetime Plan$34.99
None

Prism

No in-app purchases

Questions

Is AACtive free?
AACtive is free to download, with in-app purchases available.
Is Prism free?
Prism is free to download, with no in-app purchases.
Do AACtive or Prism have ads?
Neither AACtive nor Prism shows ads.
Which is updated more often, AACtive or Prism?
AACtive ships an update every 2 months, and Prism every 3 days. Most recently, AACtive was updated on October 9, 2026 and Prism on October 19, 2026.

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