Utter in action
Utter in action
Now piloting in select schools

Every voice
deserves to
be heard.

Utter is adaptive speech recognition built for children and adults with atypical and non-verbal speech, trained on Kenyan English and Swahili. It learns each user's unique voice and improves with every session.

Live voice recognition
80%
Accuracy after
3 sessions
Supported languages
Kenyan English
Swahili
Per-learner adaptation
1 in 6
children has a speech or language disorder
<5%
of ASR tools trained on atypical speech
<5%
mainstream models include Kenyan English training data
80%
pilot retention in our first school cohort

Recognised by

KISE
Innovate Now
AT4D
Deep Learning Indaba
Centre for Digital Language and Inclusion
About
We build for the voices technology left behind..

Utter exists because the children and adults who need speech technology most are the ones it was never built for. Standard ASR models are trained on narrow, Western speech data. They fail Kenyan English speakers. They fail Swahili speakers. They fail children whose voices do not fit the expected pattern.

We are changing that, starting with Nairobi, with data that reflects how people here actually speak.

01Voice First
02Inclusive by Design
03African by Default
Ephraim testing Utter
User Testing sessionNairobi, Kenya
How It Works
Speech recognition that
learns your learner.
Most speech tools are built for one kind of voice. Utter is different. It listens, learns, and gets better the more a child uses it — on any device, online or offline.
01

Set Up a Profile

A teacher or therapist creates a learner profile in a few minutes. Available on web and as a mobile app, works online and offline, so no classroom gets left out.

02

The Child Speaks

Utter has two modes. In Speak, the child's voice is transformed into clear, natural speech and played back instantly using their own cloned voice. In Dictate, speech is converted to text that can be shared across apps and platforms.

03

It gets smarter

The more a child uses Utter, the better it understands them. Starting with 50 short recordings, the personal voice layer begins learning their unique speech patterns and vocabulary, improving with every session.

Built on industry-leading speech models, fine-tuned on real Kenyan English and Swahili speech data. Each learner gets their own lightweight personal layer that lives on their device, so no voice data is ever shared or stored elsewhere.

Whisper Models
LoRA Adaptation
Kenyan English
Swahili
For Schools
Designed for the classroom.
Built for every learner.

No Setup Friction

Available on web and as a mobile app. No IT configuration or hardware needed. A teacher can have a learner up and running in minutes.

Built for African Classrooms

Kenyan English and Swahili support from day one, trained on real local speech data rather than adapted from Western models.

Built for Special Education

Co-designed with special education teachers and speech therapists in Kenya, so it fits how classrooms actually run.

Two Tools, One Device

Speak transforms a child's voice into clear speech output in real time. Dictate converts speech to text that can be shared across apps. Teachers choose the mode that fits the moment.

Private by Design

Each learner's personal voice layer stays on their device. No voice recordings shared.

Offline Capable

Works without a stable internet connection. Utter runs fully on the device, so it holds up in any classroom across Kenya.

We are partnering with select schools in Kenya for our 2026 pilot. Limited spots available.

Impact
Early traction.
Real classrooms.
Utter is in active outreach and early pilot initiation with special needs schools across Nairobi. Here is where we stand.
5+
institutions reached
in Nairobi
20+
Users across
early testers
90 %
Pilot retention
in first cohort
Kenyan English + Swahili
Languages trained
from day one
Our Partners
Built with the ecosystem,
not just for it.
Institutions who share the mission of inclusive education across Africa.
Senses Hub
AT4D
Innovate Now
CDLI
KBTA
KISE
Modal
Strathmore
GDI Hub
ALX Ventures
IndabaX
Partnership Details
Accelerator

Innovate Now

Utter (formerly AlphaTwin) was selected following the KISE Special Needs AI Hackathon, providing mentorship, network access, and early-stage support for the team.

Ecosystem Builder

AT4D

Supporting Utter's needs assessment and early piloting through the Assistive Technology for Development programme.

Community Partner

Senses Hub

An Assistive Technology Hub for co-creating solutions with users.

Live Labs

Kilimanjaro Blind Trust Africa (KBTA)

Supporting user testing and live labs for Utter.

Research Partner

Centre for Digital Language Inclusion (CDLI)

Our founding research and co-design partner. CDLI informed the dataset validation and model research for building inclusive speech technologies.

Research Network

Deep Learning Indaba

Utter is an active contributor to the African AI research community through Deep Learning Indaba.

Tech Infrastructure

Modal Labs

GPU inference infrastructure powering Utter's model endpoints in production.

Academic Partner

Strathmore University

Site of Utter's first public hackathon pitch and an ongoing connection to Kenya's applied AI research community.

The Team
The people building Utter.
A multidisciplinary team of engineers, educators, and researchers united by one goal: speech technology that works for everyone.
Ephraim Mwereza
Ephraim Mwereza
Founder
LinkedIn
Achieng Mary
Achieng Mary
ASR Research Lead
LinkedIn
Comfortine Siwende
Comfortine Siwende
Lead ML Engineer
LinkedIn
Sam Nyoru
Sam Nyoru
Special Education Lead
LinkedIn
Dancun Gathii
Dancun Gathii
User Development Lead
LinkedIn
Georges Byona
Georges Byona
Mobile Developer
LinkedIn
From Our LinkedIn
Thinking out loud.

Articles, reflections, and updates from the Utter team.

Follow on LinkedIn
Contact
Get in touch.
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We respond within 48 hours.

Whether you are a school leader, therapist, researcher, or investor, we would love to hear from you. Pilot spots are limited.

Nairobi, Kenya