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Our approach

How we built Wynna

Wynna isn’t a quiz app that asks random questions. Every part of it — how questions are timed, how mistakes are handled, how your child’s companions give hints — is based on decades of research into how memory, motivation and understanding actually work. Here’s what we built, why we built it that way, and the studies behind each decision.

Facts come back at the right time

People forget new information on a predictable curve — fast at first, then slower. But if you review it at exactly the right moment before it fades, it sticks for longer each time. After a few well-timed reviews, it's in long-term memory.

How Wynna uses this

Every fact your child practises gets its own review schedule. Get it right and confident? Wynna waits a day before asking again. Right again? Two days, then five, then longer. Get it wrong? It comes back in five minutes. Nearly right? The gap halves. The app automatically surfaces due reviews before new material, so your child always spends time on the facts that are about to fade.

The research

Every question makes them think, not just read

Testing yourself — actually pulling the answer out of your head — is far more effective than reading the same page again. This "testing effect" is one of the strongest and most replicated findings in all of education research.

How Wynna uses this

Wynna never shows a fact and asks "did you get that?" Every question requires your child to produce or select an answer from memory: typing it out, completing a sentence from memory, or choosing the right option from four. The engine also distinguishes between "answered from memory" and "answered after a hint" — independent recall earns more XP and counts differently on the parent dashboard, because it's a better signal of real learning.

The research

When they're stuck, hints — never answers

Children learn best when they're supported just beyond what they can do alone. A tutor who hands them the answer teaches nothing. One who asks the right question at the right time teaches them to think.

How Wynna uses this

When your child gets something wrong, Wynna's companion follows a strict three-step hint sequence. First, it asks a question that points them towards the key fact — no answer given. If they're still stuck, it offers a sentence starter or a clue. Only on the third try does it name the specific thing they're getting confused about, explain the principle, and ask them to apply it. The tutor is explicitly forbidden from ever giving a copyable answer. Your child always does the final step themselves.

The research

Wrong answers are diagnosed, not just marked

Children don't arrive with empty heads — they arrive with wrong beliefs. "Plants get food from the soil" or "heavier things fall faster." Simply telling them the right answer doesn't fix this. You have to surface the specific wrong belief, explain why it seems right but isn't, and replace it.

How Wynna uses this

When Wynna generates revision from your child's material, it identifies the common misconceptions for each topic — the specific wrong answers a child at this level is likely to hold. The AI grader uses these to diagnose what your child actually believed when they answered, not just whether they were right. These misconceptions are tracked with repeat counts. If the same wrong belief keeps appearing, it's flagged on your parent dashboard with a note like "keeps confusing evaporation with condensation (3 times)" — because recurring misconceptions don't fix themselves with more practice.

The research

Writing is structured, then coached

Most children struggle with longer answers not because they don't know the content, but because they don't know how to organise a paragraph. Teaching them a clear structure — and then coaching against it — dramatically improves writing quality.

How Wynna uses this

Every writing task in Wynna is assigned a framework that matches its subject. Humanities uses PEE (Point, Evidence, Explain) — the framework used in UK exams. Science uses CER (Claim, Evidence, Reasoning). Maths uses SOLVE (State variables, Operational formula, Logical steps). Creative writing uses DESCRIBE (Sensory detail, Figurative device, Expansion). The AI coach reads your child's writing, identifies which part of the framework is weakest or missing, and gives them a sentence starter for that section. It never writes the answer for them — it tells them where to focus.

The research

"Nearly right" gets its own treatment

Most tools mark answers as right or wrong. But the most teachable moment is when a child is nearly right — they hold the seed of understanding but missed something. Treating that the same as a blank stare wastes the thing they do know.

How Wynna uses this

Every typed answer goes through a three-verdict grading system: correct (the meaning is fully expressed, even in simpler words), partial (the right idea but incomplete — a key detail is missing), or incorrect. For partial answers, Wynna tells your child exactly what they got right and what they left out. They get some credit, and the question comes back sooner than a correct answer but later than a wrong one — so they spend time on the specific gap, not re-doing the whole thing. On your dashboard, you see what they understand and what they keep leaving out.

The research

Topics are secured before moving on

Moving a child to the next topic before they've got the current one creates gaps that get wider over time. The evidence says: let the time vary, not the standard. With enough practice and the right support, virtually every child can master a topic.

How Wynna uses this

Each topic in Wynna moves through clear stages: Not started → Needs help → Developing → Secure. A topic isn't marked as "Secure" until your child has answered consistently well across at least four graded attempts with 80%+ accuracy. When they open a new session, weak topics and unseen material are always offered first — the engine doesn't let them coast on topics they've already nailed.

The research

Topics are mixed together, not drilled in blocks

Practising the same topic twenty times in a row feels productive, but mixing different topics together actually produces better long-term results. The mix forces your child to figure out what type of problem they're looking at — which is exactly what they have to do in an exam.

How Wynna uses this

Wynna offers several mission modes. "Topic training" focuses on one area (useful when first learning something). But "Mixed mission" deliberately shuffles questions from every subject and topic together. "Weakest areas" interleaves the three topics your child struggles with most. This means every session includes the productive confusion of switching between question types — the same challenge they'll face on exam day.

The research

Lucky guesses don't count the same

Whether a child knows they know — or just got lucky — matters as much as the answer. A child who confidently gives a wrong answer needs different help from one who guesses right but knows they were guessing.

How Wynna uses this

After getting a question right, your child rates how confident they were. This directly controls the review schedule: a confident correct answer gets pushed further into the future, but a "lucky guess" comes back soon. This prevents children from cruising through easy material while being quietly shaky on the hard bits. On your dashboard, you see whether answers are coming from memory or from hints — two very different signals about how secure the learning really is.

The research

Companions make revision something they choose to do

Rewards can help or hurt motivation depending on how they're used. If they replace a child's own interest, they backfire. But if they support three things — choice, visible progress, and connection to something they care about — they make motivation stronger, not weaker.

How Wynna uses this

Your child picks a world — Heroes or Mermaids — and unlocks companions by answering questions. Each companion has their own personality and voice, levels up alongside your child, and gives better hints as they grow. The only way to unlock the next one is to revise. This is deliberate: the reward is powered by the learning itself. There are no timers, no punishing streaks, no notifications nagging them to come back, no nudge techniques to keep them online — we're designed around the UK Children's Code, and we take that seriously.

The research

Built from your child's own schoolwork

Learning sticks best when it's connected to what a child is already studying — not pulled from a generic bank of questions written for a different school, a different exam board, or a different year group.

How Wynna uses this

You upload your child's actual exam notes, textbook pages, or photos of worksheets. Wynna reads the material and builds the revision from it — their topics, their syllabus, their exam. Every question, every model answer, every misconception is drawn from what you supplied. The system is explicitly told: "Use ONLY the supplied material. Do not invent topics or facts beyond it." So if the notes are thin, the campaign is thin — it never pads with made-up content.

The research

Your dashboard tells you what to do, not just what to look at

The research is clear: parental involvement has a big effect on how well children learn. But only when parents know what to actually do. Showing a parent a score out of ten doesn't help. Telling them which topic to quiz at dinner, with the question to ask and the answer to listen for — that helps.

How Wynna uses this

Your parent dashboard doesn't just show numbers. It computes which topics are weakest and why — "understands photosynthesis but keeps mixing up respiration" — and gives you 2-3 specific things to do tonight. If a wrong belief keeps appearing, you're told about it with a repeat count. If your child is relying on hints instead of answering from memory, you're told that too. The AI-powered Parent Coach turns all these signals into plain English: "Quiz her on the water cycle at dinner — ask 'What is condensation?' and listen for 'when water vapour cools and turns back into liquid.'"

The research

AI safety built in from day one

Any system using AI with children has to get safety right — not as a feature added later, but as the foundation everything else sits on. The principle is simple: if in doubt, show nothing. Never gamble with what a child sees.

How Wynna uses this

Every piece of content passes through four layers of checking. What your child types is screened before it reaches the AI. What the AI replies is screened before your child sees it — anything flagged is replaced with a calm, safe message. The notes you upload are screened before they become a lesson. And the lesson itself is screened one more time before it's saved. If the safety service is ever unavailable, the whole request fails — we never show unmoderated content. Your child has no account of their own, no login, no public profile, and no contact with other users. Their data is not used to train AI models.

The research

We built it this way because it works

These aren’t features we added because they sound impressive on a website. They’re the techniques that decades of cognitive science say actually help children learn — and we made them work together inside something a child would want to come back to.

Questions? How it works · Safety · Privacy