01 · Wake on voice
Just say "Hey Gemma."
Vosk listens continuously, on-device, and the phone wakes the moment it hears you — even from across the room, even with the screen off. No button to find.
HeyGemma
Listening for "Hey Gemma"
Your voice is enough.
HeyGemma is an offline AI assistant built with and for people who are blind, deaf or hard of hearing, living with motor disabilities, or simply far from a signal. Speak in any language. Get help on your terms. Stay safe — even when the network can't reach you.
01 Built alongside the people it serves
Designed with, not designed at.
Made for the people the smartphone has often overlooked.
Every choice in HeyGemma — the wake word, the silent SOS, the spoken replies — exists because someone told us their phone wasn't listening. We're grateful they did.
i.
For people who are blind or have low vision.
Your screen reader can rest. Every reply is spoken aloud in a voice you choose, and the whole app is built to work with the screen turned off.
ii.
For people who are Deaf or hard of hearing.
Voice isn't the only way in. Type if you'd rather, read every reply as live text, and reach for help with a silent SOS — no phone call required, ever.
iii.
For people living with motor disabilities.
No taps, no precise gestures, no small buttons. A single spoken phrase wakes the app — from across the room, from a wheelchair, from bed.
iv.
For elders and people new to reading.
Speak the language you grew up in. HeyGemma listens, replies aloud, and never asks you to navigate a menu.
v.
For anyone without signal.
Mountains, basements, ambulances, plane mode. Gemma 4 runs on your phone — so help is wherever you are.
02 What it does
Press nothing. Read nothing if you can't.
Five quiet things, always at hand.
02 · Silent emergency SOS
If something happens, help finds you.
Pick a word that means safety to you — "help", "Amma", anything. Say it three times in eight seconds and HeyGemma sends your live GPS to a trusted contact over Telegram. No phone call. No SIM credit. No noise.
SOS sent to Priya · 28.5614 N, 77.2098 E
03 · Every reply, spoken
Hear what you'd rather not read.
Native Android TTS by default, ElevenLabs voices when you want them. Replies also appear as live captions for Deaf and hard-of-hearing users.
LIVE CAPTION
"Your bus is six minutes away. I'll let you know when it's two."
04 · Your language
Speak the language you love.
Gemma 4 understands and replies in the language you grew up in — not the one your phone defaulted to in the shop.
हिन्दी
தமிழ்
العربية
Kiswahili
Português
+39 more
05 · Stays on your phone
Private by default.
Gemma 4 runs locally in GGUF, accelerated by Vulkan on the GPU you already have. Nothing leaves the device unless you ask it to.
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A phone should meet you where you are. HeyGemma is our small attempt to make sure it does.
Get HeyGemma