The AI that was actually there.
A private AI brain for classrooms and workshops. It is in the room during the lesson, learns what was taught and discussed, and helps the class keep learning afterwards.
- It was there — so it knows your lessons, not just the internet.
- Learns from your materials and what was actually taught.
- Processed locally. No classroom recordings. No names required.
General AI knows the world. ContextFriend knows what happened here.
AI normally knows everything — except your lesson. ContextFriend was there.
Not just trained on the internet. Trained by being there.
A generic AI knows
- Textbooks and Wikipedia
- General knowledge
- Common teaching methods
It has never heard
- How your teacher explained it yesterday
- Which example the class used
- What has already been covered — and where it got difficult
- What homework was assigned
ContextFriend knows
- The learning materials you provide
- What happened during the lesson
- The teacher’s explanations and examples
- What the class has already covered
- The learning history of this class or group
It was there.
The class remembers.
Student was sick.
I was sick yesterday. What did I miss?
ContextFriend explains the lesson from what actually happened in it — not from somebody else’s notes.
Student did not understand.
Explain it again the way Ms Müller explained it.
The answer stays close to the teacher’s own method and words — not a generic textbook paragraph.
Weeks later.
When did we first learn percentages?
The Class Memory reaches back: what was covered when, and how it connects to today’s lesson.
Substitute teacher.
What has this class already covered?
A concise overview of where the class stands — without the handover meeting that never happened.
Homework, the class’s way.
Help me with number 4 — using the method from class.
Help that follows the method the class actually learned, instead of a shortcut the teacher never taught.
And more: revision before a test, project groups, questions in the language you think in…
Your classroom has a memory now
We call it the Class Memory. Every lesson adds to a private memory that belongs to that class. Not a recording. Not a surveillance archive. A structured memory of what was learned.
Lesson: Fractions and reducing fractions
ContextFriend remembers
- The concepts that were introduced
- The teacher’s examples — pizza slices included
- Exercises and homework
- Questions the class found hard
- Explanations that helped
It deliberately does not remember
- Which child made a mistake
- Personal conversations
- Students’ names or voices
Store knowledge, not conversations.
How ContextFriend learns
Before class
The teacher adds books and materials.
PDFs, slides, worksheets — the class’s own sources, not the open internet.
During class
ContextFriend quietly learns with the class.
A small box in the room follows what was taught and how it was explained. The mute is physical, not a setting in an app.
After class
The lesson becomes Class Memory.
What was taught, which examples were used, what is due — structured knowledge, not a recording. The teacher can review and correct it.
Later
Ask — the box stays at school.
Students and teachers ask in the school portal: laptop, tablet or phone, through the school’s own VPN or tunnel. The memory never leaves the building.
And all of this happens locally, inside the school.
Your school data stays in your school
- Classroom speech
- Transcribed locally
- Speakers stay anonymous
- Learning knowledge extracted
- Raw audio discarded
- Only the Class Memory remains
No classroom recordings. No student profiles. No cloud listening.
Runs locally
Speech, memory and answers live on a machine the school controls.
No audio recordings
Audio is a stream. It is not kept as a file in normal operation.
No student names
Speakers are Teacher and Speaker-N. Nobody is identified.
No lesson data sent to cloud AI
Transcripts, documents and memory never go to a hosted model.
Teacher controlled
Teachers see what was remembered, correct it — or delete a session entirely.
Your knowledge stays yours
Class memory is never used to train public AI models. It cannot be — it does not leave the school.
Interested in trying it at your school?
We are selecting a small number of schools and workshop partners for our first pilots.
Apply for a pilotHow it works technically
One powerful private brain for the school. One small ContextFriend in every room. A portal for teachers and students — and nothing of the lesson leaves the building.
Your school
- Classroom
- ContextFriend box
- Local school brain
- Teacher / student portal
No lesson data here.
Three pieces, all on the school network
A box in the room
The Room Brain is a small listening box with a microphone and a physical mute. It is a participant, not a recorder: it learns what was taught and how it was explained.
A brain in the school
The Central Brain is a strong local machine — a Mac mini or similar, in a locked cupboard. It transcribes, remembers and answers. No hosted LLM. No hosted speech-to-text.
A portal for the class
Teachers and students ask at the box or later in the school portal, on the LAN or through the school’s own VPN or tunnel — not a public SaaS address.
Technical details
Product guarantees, stated the way they are actually implemented — including the caveats.
No cloud AI for lessons
Speech-to-text, embeddings, retrieval and answers run on the school's Central Brain. We do not send transcripts, documents, memory or sources to hosted LLM APIs.
Audio is a stream
The Room Brain never writes audio to disk. The Central Brain does not keep audio in normal operation. During a supervised pilot an optional on-premises audio archive can be switched on for quality analysis, and is then purged.
Room isolation
Every query is scoped to a room. By default each room only sees its own memory. An operator can explicitly link rooms — for example workshop groups reading a shared plenum — or assign shared document collections. There is no automatic cross-room visibility.
No student identification
Speaker labels are anonymous: Teacher, Speaker-2, Speaker-3.
You can pull the WAN cable
Day-to-day teaching does not need the internet. Optional internet is for updates, model downloads, remote administration, and — only if a school explicitly enables it — cloud text-to-speech of the final spoken answer text.
Retention and deletion
Transcripts default to 30 days; memory is longer and configurable. Teachers and admins can purge.
Not only school: workshops and trainings
Each group gets its own ContextFriend. Over a multi-day workshop it learns the discussions, the decisions, the ideas and the open questions. Groups stay separate — the organiser can explicitly link a shared plenum.
AI memory for groups that learn together.
“What did our group decide about the prototype on day two?”
“Summarise our discussion about the target audience.”
The teacher stays in control
ContextFriend belongs to the teacher, not the other way around. Start and stop it in the room, see what it learned, correct it — or make it forget.
- Start session
- Stop
- What did you learn today?
- Correct memory
- Forget this session
A confirmed summary builds trust — and makes the memory better at the same time.
Today I learned
- Adding and subtracting fractions
- The common-denominator method
- The pizza-slice example
- Exercises 3–7
- Homework: page 42, tasks 8–10
Who it is for
Teachers
Explain it once.
The class can still hear how you explained it next week — without you repeating it five times.
Students
Ask what you missed.
Or how it was explained, in the words your class already knows. In the language you think in.
School IT
You hold the keys.
It runs on your network. TamerinTECH does not host the lessons. Your DSB can inspect what is stored.
Not a consumer toy, and not “ChatGPT for kids”.
A real box, on a real desk.
Small. Quiet. Powerful.
No cameras. No hidden microphones. No mysterious cloud service. Just a small local computer that belongs to the classroom — a working prototype, not a glossy render. We install it with you, and the school keeps the keys.
- Raspberry Pi 5
- Microphone array
- Clear case, easy to mount
- No cameras
A product of TamerinTECH
Machine Learns — You Grow
We build it, we install it, and we hand the school the keys to its own classroom memory.
It shows you what it is doing
A friendly face, a green light, one button — never a hidden recorder.
Sleeping
Off duty. Nothing is heard, nothing is processed.
Learning
The lesson is being processed — locally, in the room.
Thinking
Someone asked. ContextFriend is composing an answer.
Ready
Awake and available. Press the button and ask.
Front 
Back: ordinary ports 
One button on top
Questions school operators actually ask
Does audio leave the school?
No. Audio is streamed on the school LAN and never sent to a cloud speech-to-text API. During a supervised pilot an on-premises archive can be enabled for quality analysis, and it is purged afterwards.
Does it work offline?
Teaching does. Updates, model downloads, remote administration and the optional cloud text-to-speech need a network path; the lesson itself does not.
Do you identify students?
No. Speaker labels are anonymous (Teacher, Speaker-2). There is no face recognition, no attendance tracking and no grading from audio.
Where does the data live?
On the Central Brain on the school LAN, or another local site the operator controls. Remote access to the portal goes through the school's VPN or tunnel — it is not a public SaaS URL.
What hardware do we need?
One strong local machine plus a Room Brain per room. A Mac mini in the 64 GB class is our current pilot profile, not a requirement — a similar on-premises box is fine. The Room Brain is Raspberry-Pi class with a speakerphone.
Is there a price list?
No public prices. We start with a supervised pilot in your school, and the pilot tells us both what the right shape is.
How does this sit with GDPR and FERPA?
The architecture is on-premises: TamerinTECH does not host classroom data, so the school stays the controller for it. We do not claim a compliance badge — we give you an architecture your data protection officer can inspect.
Can the works council or the DSB inspect it?
Yes. There is a local admin overview of what is stored, what the retention is, and a purge button. Nothing about it requires our involvement.
Can rooms share memory?
Only if an operator explicitly links rooms or assigns shared collections — a workshop plenum, for example. The default is isolation.
Bring ContextFriend to your school.
We are selecting a small number of schools and workshop partners for the first supervised pilots in Germany.
Tell us about your school. We will tell you honestly whether ContextFriend fits it yet.