The finding everyone skips: it only worked because teachers framed every session.
Why cog.ng is built with teachers
not around them
Coming soon · in 2027
Your child gets stuck at 9pm.
cog.ng doesn't sleep.
An AI teacher from primary school to JAMB. It builds the lesson, the video and the
practice around the exact thing your child got wrong tonight. Games for the young ones,
virtual practicals and timed mocks for the exam years. And it works when the data finishes.
Why now
One-to-one teaching works.
Almost no child gets it.
Almost no child gets it.
A six-week trial of AI tutoring in nine Edo State
public schools produced 1.5 to 2 years of learning gain
public schools produced 1.5 to 2 years of learning gain
World Bank & Stanford, 2024
Randomised controlled trial, 800 SS1 students
10%
Built against the papers your child will actually sit
WAECSSCE, May/June
JAMBUTME
NECOSSCE
BECEJunior secondary
Common EntrancePrimary
Every age
It grows up with your child
A nine year old and an SS3 candidate do not need the same teacher. The AI reads where
your child actually is and rebuilds itself around them: what it teaches, how it sounds,
and how much of it is a game.
Primary 4 to 6
Nothing is gained by sitting a nine year old down with a past paper, so it plays instead. The AI builds a short video, an activity and one small quest a day around exactly the topic your child wobbled on yesterday. They think they are playing. They are being taught.
JSS 1 to 3
Still playful, but the practice starts counting. This is where the gaps that wreck an SS3 candidate are quietly formed, so this is where the AI starts keeping score. It generates simulations your child can pull apart, and duels them against their friends on the topics they are both weakest at.
SS 1 to 3
The playing stops. One year group, one exam date, and a plan that works backwards from it. The AI sits every mock with your child, marks the theory, finds the exact line the working went wrong, and tells them what grade they are currently on course for.
How it works
A tutor, not
a chatbot
a chatbot
Free AI tools are already in every student's hand, and they hand over answers. cog.ng is grounded in the actual syllabus, it holds back the solution, and it keeps a record a teacher and a parent can both see.
It finds
the gaps first
the gaps first
(01)
Twenty minutes of adaptive questions produces a topic-by-topic map of what your child has not understood yet.
Hints first,
answers last
answers last
(02)
A nudge, then the method, then the worked solution. In that order, every time, so the thinking stays with your child.
Real papers,
real marking
real marking
(03)
Ten years of WAEC, NECO and JAMB papers sorted by topic, with worked solutions checked by teachers before they reach a child.
Everyone sees
the same picture
the same picture
(04)
A weekly WhatsApp message to the parent and a class heatmap for the teacher, both drawn from the same record.
Try it
This is what
being stuck looks like
being stuck looks like
Mathematics · Simultaneous equations
WAEC 2019
Question 14
If 3x + 2y = 16 and x − y = 2, find the value of x.
Tap it. cog.ng will not hand over the solution first.
A real past question, answered the way cog.ng answers.
A week with cog.ng
From first login
to a predicted grade
to a predicted grade
The engine
The AI does the heavy lifting
cog.ng is not a library of lessons with a chat box bolted to the side. The model is the product, and it
ships inside the app. Nearly everything your child sees was built for your child, from what they got
wrong last night, and it did not exist before then.
It writes the lesson for your child
Two children stuck on the same topic get two different lessons, because they are stuck for different reasons. The AI reads the actual working, finds the misunderstanding underneath it, and generates the explanation, the examples, the practice set and the video around that one misunderstanding.
It never runs out of material
A fixed question bank runs dry in a fortnight and children start memorising answers. This one generates fresh questions, fresh worked examples and fresh quests every session, all pinned to the syllabus and checked against a real answer key before your child sees them.
Part of it lives on the phone
The heavy work, the videos and new lessons, happens on our side and travels down with the pack. A smaller tutor is bundled into the app itself, so with no network at all it can still hint, still follow your working, still check a short answer. The app does not go dead when the bundle does.
A teacher still has the last word
Generated work is verified against the answer key, reviewed by a subject teacher, and labelled so you always know what the AI made. If a teacher corrects an explanation, the correction reaches every child using cog.ng.
The laboratory
Practicals, without a lab
Most schools in this country cannot run the WAEC practical. No burette, no bench, sometimes no power.
Children still sit the paper. So the AI builds the laboratory instead, apparatus by apparatus, and marks
the report against the WAEC practical marking scheme.
Titration and volumetric analysis
Fill the burette, run it into the flask, watch for the colour change and stop. cog.ng holds you to concordant titres before it lets you calculate, exactly as the examiner does, and the arithmetic at the end is marked the way the marking scheme marks it.
01
Qualitative analysis
An unknown salt and a set of reagents. Add, observe, record what you actually saw rather than what you hoped to see, then name the ion. The AI marks the observation column as strictly as the inference column, which is where most candidates quietly lose the marks.
02
Electrical circuits and Ohm’s law
Wire the circuit, close the switch, vary the resistance and read the meters. Plot V against I, draw the line of best fit yourself, and take the gradient. If your graph is wrong the AI tells you which reading dragged it, not just that the answer missed.
03
Optics and lenses
Slide the lens, move the screen, find the sharp image. Measure u and v, plot the graph, and work back to the focal length. Ray tracing, real and virtual images, magnification, all of it manipulable instead of memorised from a diagram.
04
Simple pendulum and mechanics
Change the length, time twenty oscillations, repeat, and take the mean. Plot T squared against l and pull g out of the slope. The tedious, repetitive, absolutely examinable part of physics practicals, without needing a stopwatch or a retort stand.
05
Biology specimens and dissection
Observe the specimen, draw it, label it, and answer on what you can actually see. Dissections work through without an animal on the bench, and your drawing is marked on the things WAEC marks drawings on: proportion, clean lines, and correct labelling.
06
Simulations you can pull apart
Beyond the exam practicals, the AI builds models your child can manipulate inside the lesson itself. Motion, waves, optics and circuits in physics. Reactions, equilibria and the gas laws in chemistry. Cell processes and genetics in biology. Drag the slider, change the value, watch what it does to everything else. This is the part a diagram in a textbook has never once managed to teach.
07
Video and voice
A lesson filmed for one child
Most of what your child watches on cog.ng did not exist until they needed it. The AI writes the script from
the topic they just failed, narrates it, and draws the working out on screen as it talks. Where a human on
camera genuinely matters, we film teachers instead.
Generated for the gap, not for the shelf
A video about quadratic equations is not much use when the problem is that your child cannot factorise. The AI makes the one they actually need, in the time it takes to boil a kettle, and keeps it for the next child with the same gap.
Narrated in a language that lands
English, and where it helps, Yoruba, Hausa, Igbo or pidgin. Not translated word for word. The explanation is rebuilt so it teaches in that language, then checked by a teacher who speaks it.
Talk to it, and read to it
Older students say an answer out loud and hear the working back. Younger ones read a passage aloud and get scored on accuracy, pace and expression, the way a teacher listening over their shoulder would.
It comes down with the pack
Videos download over WiFi with the rest of the subject pack and play with no connection at all, at whatever quality the bundle can afford that week.
Labelled, always
Anything the AI made says so on the video itself, along with whether a teacher has reviewed it. You should never have to guess who made what your child is watching.
It gets funnier the younger they are
For the primary years the same engine produces animation, characters and a quest rather than a lecture. Same syllabus underneath, completely different thing to sit through.
Why cog.ng
Four things we
refuse to get wrong
refuse to get wrong
Correctness
offline
Child safety
Data cost
Measured, not claimed
We are running a controlled trial at our pilot school, against a class
that is not using cog.ng. Whatever it says, we will publish it.
A teacher checks the work
Every explanation is grounded in the syllabus, verified against a real answer key, and reviewed by a subject teacher before a child ever sees it.
Built for children's data
Parental consent, age-appropriate limits, and a full log of what the AI said to your child, visible to you and to the school. Compliant with the Nigeria Data Protection Act.
Made for the phone you already own
A small download, low data, and low battery. Built and tested on entry-level Android, not on a flagship. Screen reader support, a dyslexia-friendly typeface, large text, high contrast and reduced motion are settings, not an afterthought.
Features
What your child gets
It finds the gaps first
Most children do not know why they are failing. Twenty minutes of adaptive questions and cog.ng can name every weak topic.
Ten years of past questions
Real WAEC, NECO and JAMB papers, sorted by topic, with worked solutions written and checked by teachers.
Essays and theory get marked
English essays, comprehension and theory questions in the sciences, marked with feedback rather than just a score.
Photograph your notes
Snap what the teacher wrote on the board. cog.ng summarises it, ties it to the syllabus, and turns it into questions to test yourself on.
Photograph your working
Snap the page. It reads the handwriting and finds the exact line where the mistake started, instead of just marking it wrong.
JAMB CBT that feels real
Same interface, same clock, same pressure. Practise the exam itself, not only the syllabus behind it.
Explained in a language that lands
English, and where it helps, Yoruba, Hausa, Igbo or pidgin. A word problem about a subway does not teach anybody here.
Say that again, simpler
Every topic carries three depths of explanation. Ask for it simpler, or deeper, as many times as it takes. Pick the wrong option and it tells you which misunderstanding that option was built to catch.
The exam years
Knowing the work is
only half the paper
only half the paper
- Marks lost are sorted into three pilesAfter every mock: what was lost to a gap in knowledge, what was lost to the clock, and what was lost to misreading the question. Three different problems, and cog.ng treats them as three different problems.
- Exam technique, taught on purposeHow long to spend per section, which theory questions to attempt and which to leave, and how to structure an answer so the marking scheme can actually award the marks.
- The right subject combination for the courseTell cog.ng the course your child wants. It checks the JAMB combination is valid, holds it against published cut-off marks, and says which courses and institutions the current predicted grades put in reach.
- Coverage against the syllabus, not the scheme of workSchools teach from one document and children are examined on another. cog.ng tracks both, and tells you which examinable topics your child's class has not reached yet.
- Old topics come back before they fadeWeak and recently learned topics resurface on a schedule tuned to when your child is about to forget them, with flashcards drawn from their own mistakes. Revision stops being a thing you cram in April.
- A plan that works backwards from the dateFrom the exam date to a daily plan, and it rebuilds itself when your child falls behind or races ahead. The pace steps up as the date closes in, and both of you see the countdown.
- Every registration and sitting date, with remindersWAEC, NECO, JAMB and BECE. Nobody in this house misses a registration window again.
Coming back
The best tutor is useless
if nobody opens it
if nobody opens it
This is where most learning apps quietly fail, and it matters most for the younger children. The same
AI that writes the lessons writes the games, so cog.ng is built to be worth opening on a Saturday.
One quest a day
Short enough to finish, small enough to want to. Streaks build, and a streak survives one bad week, because a single missed Tuesday should not end a four-month run.
Badges you have to earn
Awarded for showing you understand something, never for minutes spent staring at a screen. A badge here means a topic is genuinely secure.
Duels and leagues
Head to head timed quizzes against a friend, and opt-in leagues at class and school level. Nobody is entered into anything without saying yes first.
Schools against schools
A national league, and inter-school tournaments run on cog.ng. The kind of thing a school assembly can get behind.
Consistency pays in airtime
Keep it up and cog.ng sends airtime and data. Capped, earned, and in this market it is a reward a child feels immediately.
Rewards you set yourself
Attach your own promise to a milestone cog.ng can verify: a mastered topic, a streak held, a mock score reached. It pays out when the work is real, not when your child says it is.
Subjects
One tutor, every class
in the house
in the house
Mathematics, English, the sciences and the rest of the core syllabus, from Primary 4 straight through JSS to SS3. Common Entrance, BECE, WAEC, NECO and JAMB on one account. The child you sign up in Primary 5 is still with cog.ng the night before UTME, and it will remember every topic they ever struggled with along the way.
Join the waitlist
Who it's for
One record,
four people who need it
four people who need it
Students
A tutor that already knows which topics you keep getting wrong, and will not let you skip to the answer.
Parents
A message every Friday on WhatsApp: what was covered, how long they really studied, and one thing to ask at dinner.
Teachers
The whole class on one screen, assignments marked overnight, and the power to correct any explanation cog.ng gives.
Schools and NGOs
Cohort-level exam projections, coverage tracking, and a classroom box that runs the whole thing with no internet.
For parents
You do not need to know
the subject to help
the subject to help
A message every Friday
On WhatsApp. What was covered, how long your child actually studied, which way the mastery moved, the three weakest topics, and one question to ask at dinner.
Explain it to me too
Whatever your child is stuck on tonight, rendered in plain language for you. You can sit with a topic you never studied and still be useful.
Told before it becomes a problem
The streak broke. Readiness is sliding. A topic has now failed three times. Revision stopped two weeks before a paper. You hear about it while there is still time to act.
All your children, one account
Several children, at different schools, in different year groups, on one login. One device in the house works too: profiles switch in a tap.
You set the hours
Choose when cog.ng opens and for how long. Attach your own rewards to milestones cog.ng can actually verify, so the reward follows real work.
When the AI is not enough
If cog.ng keeps failing to close the same gap, it says so, and offers a vetted human tutor you can book and pay for in the app. Upload the term report too and it will explain the grades and link each weak one to the topics behind it.
Offline
The tutor is
in your pocket,
not in the cloud
in your pocket,
not in the cloud
No app. No smartphone.
It still works.
It still works.
Everything on WhatsApp
A parent with no app installed can still receive the weekly card, ask how their child is doing, and set a quick quiz going. Homework help and daily quizzes run in the same chat.
Down to a feature phone
For rural deployments and NGO programmes, quizzes go out over USSD and SMS, progress can be checked with a short code, and parent alerts arrive as plain text.
One phone, several children
Most households share a device, and so does most of a computer room. Profiles switch in a tap and nobody's progress bleeds into anybody else's.
What happens next
This term
The pilot school
One year group, two subjects, teacher supervised, measured against a class that is not using cog.ng.
Next term
We publish the result
Whatever it says. Everyone on the waitlist gets it first, including if it does not work.
2027
Open to parents
Primary 4 through SS3, every core subject, Common Entrance to JAMB. The waitlist goes first, at the founding price, before the 2027 WAEC and JAMB season fills up.
After that
Schools, states, and where the network does not reach
The offline classroom box, deployments with NGOs and state programmes, and cog.ng teaching in more of the languages children actually think in.
For schools
Set up for a class
in an afternoon
in an afternoon
cog.ng plugs into the school management system you already run: roster, classes, CA scores, attendance and term results flow both ways, so it knows your students from the first day instead of the third week. No system yet? A CSV import gets you started. Nothing to migrate either way.
Talk to us about your school
The whole class on one screen
Every student, every topic. Who is behind, and on exactly what, before the mock tells you.
Marking and papers, handled
Assignments marked overnight with feedback. CA tests generated with marking schemes, and three versions of a worksheet for the three abilities in one room.
Your teachers stay in charge
If an explanation is wrong, the teacher corrects it, and the correction reaches every school using cog.ng. We train your teachers to run AI-supported sessions properly, with materials and a run sheet, and they can earn a certificate for it that counts as a professional credential.
Told who needs you, and on what
A list every week of the students who need attention and the exact topic behind it. Lesson plans built to your scheme of work, with the cog.ng practice already linked in.
The question every school asks first
Will they just cheat with it? Submitted homework is flagged when it looks like it came out of a general AI tool rather than out of the student. School mocks run with full-screen enforcement, tab-switch logging and randomised question order.
It matches the book you teach from
Give us the textbooks your school actually uses and cog.ng ingests them, so an explanation at 9pm uses the same notation and the same worked example the teacher used at 9am.
For NGOs and programmes
Built to be evaluated,
not just deployed
not just deployed
A classroom with no internet
A small box running a local server and its own WiFi, serving thirty to fifty devices with nothing coming in from outside. Content packs are signed, and it syncs whenever a connection turns up.
Hundreds of shared tablets
Kiosk mode, remote health checks, scheduled content sync and per-device usage across a whole fleet. Programmes, cohorts, sites and facilitators, all managed in one place.
Numbers in the shape you report in
Learning gain, attendance and cost per learner on a monitoring and evaluation dashboard. Baseline and endline assessment tooling with control group support, so a funder can run a real evaluation on the platform rather than beside it.
Out-of-school and adult learners
Adult literacy and numeracy, and vocational modules, on the same infrastructure with pedagogy built for grown learners rather than borrowed from a classroom.
Your name on it
White label the whole thing under a state or organisation brand, licensed per learner, and configure a deployment around a primary local language.
Fund a seat, or a school
Companies and individuals can sponsor named students or whole schools, and get impact reporting back on what the money did. Anonymised data exports are available to researchers under agreement.
Founding price
Priced by term, the way
school fees already work.
school fees already work.
Parent plan
Per child
₦12,000
/ per term
What's included
Everything on this page, for one child, for a full school term. A lower rate for a second and third child.
- Every core subject, Primary 4 to SS3
- Ten years of past questions
- Weekly WhatsApp report to you
- Offline packs and mock exams
This is the founding price. Everyone on the waitlist keeps it, even after it goes up.
School plan
Per student
₦1,500
/ per term
What's included
Charged on enrolment and collected on your fee schedule, so there is nothing extra to chase.
- Everything in the parent plan
- Teacher dashboards and auto-marking
- Cohort WAEC and JAMB projections
- Offline classroom box, where it's needed
Pilot schools pay nothing for the first term.
FAQs
The questions
parents actually ask
parents actually ask
No. cog.ng is grounded in the NERDC curriculum and real WAEC, NECO and JAMB past papers, so it cannot wander off the syllabus. It holds back the answer, tracks what each child has actually mastered, and every explanation is checked by a subject teacher before it reaches a student. A general chatbot does none of that, and it will happily give a confidently wrong worked solution.
The lessons, questions and worked solutions are downloaded over WiFi and stored on the phone. Your child can work for a week with no connection at all, and everything syncs the next time there is one. For schools with no internet, a small box on the teacher's desk serves the whole class over its own WiFi.
That is the failure we take most seriously, because a wrong worked solution teaches something false. Every generated explanation is verified against a real answer key and reviewed by a teacher before release, and anything cog.ng is not confident about goes to a human instead of guessing. Teachers can correct any explanation, and the correction reaches every school.
We are registered with the Nigeria Data Protection Commission and built for minors' data from the start. Consent runs through you or the school, there is a full log of every interaction that you can read, and you can ask us to delete everything at any time.
We are running a measured pilot with High-water mark school in Akure this term. If the result holds up, we open to the waitlist ahead of the 2027 WAEC and JAMB season. If it does not, we will tell you that too.
₦12,000 per child, per term on the parent plan, with a lower rate for a second and third child. Schools pay ₦1,500 per student, per term, collected on your own fee schedule. It is charged per term rather than per month, and anchored well below what a private tutor costs per hour. Everyone on the waitlist gets the founding price and keeps it.
It is for both, and Primary 5 is honestly the better time to start. cog.ng runs from Primary 4 to SS3, and at your child's age it works through games, videos, daily quests and reading aloud rather than past papers. The point is that the gaps which wreck an SS3 candidate are formed years earlier, quietly, in topics nobody noticed going wrong. Start now and cog.ng has six years of your child's actual mastery record by the time WAEC comes around, instead of six weeks.
The game is not the lesson. It is what gets a nine year old to open the app on a Saturday, and an app nobody opens teaches nothing at all. Underneath, every duel, quest and badge runs on the same syllabus tree and the same reviewed questions as an SS3 mock. Badges are awarded for demonstrating you understand something, never for minutes spent on screen, so a full badge shelf means real mastery rather than a long sitting.
Waitlist
Get in before
the first term
the first term
We are piloting with High-water mark school in Akure before opening up. Everyone on the waitlist gets in first, at the founding price, and keeps it.
E-mail address
hello@cog.ng
Schools and NGOs
schools@cog.ng