
Free
About
Lumen is a free AAC app (Augmentative and Alternative Communication) for people who cannot speak. It turns symbols and words into a clear spoken voice, so anyone can communicate, whether they point, tap, or use the iPad's built-in eye tracking.
Built to be simple. No account, no setup wall, no cost.
HOW IT WORKS
Choose a symbol or word and Lumen speaks it out loud. Build short sentences tile by tile. The voice plays instantly, even with the screen muted by the silent switch.
EYE TRACKING
Works hand in hand with the native iOS Eye Tracking accessibility feature. Large, well-spaced tiles are designed to be selected with the eyes, with no extra hardware needed.
WORD PREDICTION
Lumen suggests the next likely words as you go, so building a sentence takes fewer selections and less effort.
PERSONAL TILES
Add your own tiles with a photo from the camera. Make boards that match the user's real life: family, food, places, feelings, daily routines.
NATURAL VOICES
Clear, natural speech in multiple languages, with male and female voices matched to each language. Once a word has been spoken, it plays back instantly and offline.
MADE FOR REAL USE
- Speaks even when the phone is on silent
- Works offline, no internet required for core use
- Clean, high-contrast tiles that are easy to read
- Caregiver-friendly board editor
PRIVACY
Everything happens on your device. No account, no tracking, no ads. Your boards and photos stay with you.
IMPORTANT
Lumen is a communication aid. It supports, and does not replace, the guidance of a speech and language therapist.
Privacy Policy: https://sebastianbrzezinskiapps.web.app/privacy.html
Terms of Use: https://sebastianbrzezinskiapps.web.app/terms.html
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What's New in Lumen AAC
1.0
July 3, 2026