Help your child grow all year long

Q: Does SlimSnap do maths too, or only language?

Both. There are 160 maths lessons for group 3–8 — from counting and times tables to fractions, percentages and graphs — alongside more than 800 language lessons. It is the combination that makes the difference: many maths mistakes are really reading mistakes.

Q: Does it match the school's teaching method?

SlimSnap is method-independent: it practises the skills that national tests measure, not a specific school method. That is why it fits every school.

Q: How does my child learn from their mistakes?

After a mistake your child first gets a tip and a second chance, then a short explanation in child-friendly language — in Dutch. Wrongly answered questions come back in the daily set and through smart repetition until your child masters them. The mistake analysis points out which part is still difficult and sets up a short catch-up route.

Q: How do I log in — do I need a password?

There is no password. Your e-mail address is your access. After purchase, access is active straight away on that device. On a new device — or if you clear your browser data — open the app, tap "Toegang herstellen" (Restore access) and enter the same e-mail address. Done.

Q: I have more than one child. Can that work on one device?

Yes. On the same device you create a profile for each child, each with its own group and its own progress — so you don't need a second tablet. Did you buy a group for each child? Then choose, for each profile, the group that belongs to that child.

SlimSnap is not a one-month test drill, but a continuous learning path for language and maths that grows with your child a little every day — from group 3 to group 8. Your child can then face the school tests along the way, with the Doorstroomtoets (the group 8 final test) as the final boss, with confidence.

✨ Try for free Watch in 30 seconds

✅ First lesson free 🔒 No account needed 🚫 No ads in the app 💶 From €14.90/year

This website is translated, but the app and its lessons are in Dutch, following the Dutch primary-school curriculum.

0Lessons in total

0Maths lessons

0Reading practice tests

3–8All groups

Plus 16 boss exams and separate maths tasks for the Doorstroomtoets in group 8.

What it gives your child

A child who wants to practise on their own

At SlimSnap, motivation is not a trick added afterwards. Every screen is made to help your child keep going and notice that they are growing. These are real screens from the app.

Screen from the app: after a wrong answer a tip appears and your child may choose once more

Mistakes are no drama

Wrong choice? Then a tip and a second chance come first, not the answer straight away. Your child works out what was wrong, and learns that a mistake is just a step along the way.

Screen from the app after a difficult lesson: That one was tough! Practice makes perfect.

Keep going, even when it's tough

Was a lesson hard going? Then no "badly done", but "That one was tough! Practice makes perfect." SlimSnap praises effort and persistence, not being clever.

My growth screen: what already works, and the next step with three lessons to practise

See what already works, and what's next

In "Mijn groei" (My growth) your child sees what they can already do and what the next step is. If the basics are still shaky, the route starts there. No guessing about what to practise.

Dashboard: one lesson to start with, a daily goal of three lessons and a streak

A little bit every day

One clear lesson to start with, a daily goal of three lessons and a streak that grows. Short sessions that can be finished: practice becomes a habit instead of a battle.

Why this works: the learning psychology behind it →

Take a look

How SlimSnap works — in 30 seconds

Recorded in the real app, exactly as your child sees it. Choose below what you want to see.

New in SlimSnap

Every mistake becomes a next step

A lot has been added in recent weeks: short lesson films, a mistake analysis that finds the gap, and a daily set that practises exactly what was still difficult.

Real clip: lesson film "Discounts and VAT", group 7. In the app, the film is narrated.

🎬

Short lesson films and animations

92 narrated lesson films, and animations in hundreds of lessons, show how it works: coins you share out, a word that points back, a verb that breaks apart into pieces.

🔎

Mistake analysis: where is the gap?

SlimSnap sees which part is still shaky, such as "Maths · Ratios · Fractions", and whether the cause lies in an earlier step. Then a short catch-up route of 1 to 3 lessons follows.

📅

A set of their own every day

The daily set brings back earlier mistakes and questions from lessons already played, so what was learned sticks. Finished? Then a reward is waiting.

💡

A second chance with a tip

Wrong answer? Your child first gets a tip and may try again before the correct answer appears. That way they think for themselves.

📝

Reviewing tests

After a practice test your child looks back question by question: their own answer, the correct answer and the text that goes with it. So you see exactly where it went wrong.

📬

A weekly parent e-mail

With a package you can switch on a weekly e-mail: how much was practised, what is growing and what the next step is, with a growth chart.

✨ Try the first lesson for free

Two subjects, one app

Language and maths — both, and the link between them

Most apps do either language or maths. SlimSnap does both, because they come together: a child who reads the sum but doesn't understand the question works out the wrong thing.

📚

Language · 800+ lessons

Reading & language with strategy

From the first letters to text analysis at test level.

Reading comprehension: main idea, purpose of a text, summarising
Reference words, cause and effect, fact and opinion
Spelling & grammar, verbs
Vocabulary with themes from everyday life
Sentence analysis and parts of speech

See the language lessons →

🧮

Maths · 160 lessons

From counting to fractions

And reading the sum counts too.

Numbers, counting, splitting numbers, adding & subtracting
Times tables, division and column arithmetic
Clock, money, measuring and geometry
Fractions, percentages and decimals
Graphs, tables and word problems

See the maths lessons →

Bonus for group 3 and 4: extra Logical Thinking lessons — sequences, patterns and analogies.

This is what learning looks like

No boring sums — real adventures

Every lesson — language and maths — opens with cinematic scenes and explanations at a child's level. Tap an image to see it larger.

Group 3 lesson ‘Become a Story Sleuth’ — discovering secrets in sentences with your magnifying glass — **Become a Story Sleuth**Group 3: discover secrets in sentences with your magnifying glass.

Two images from the lesson film Discounts and VAT: first 10% of €80 with piles of coins, then the rule: discount off, VAT on — **Discounts and VAT, in pictures**Group 7: first find 10%, then you literally see the discount come off the pile.

Two images from the lesson film Reference words: a line shows that hij (he) points to Rex and hem (him) to the apple — **Who does "hij" (he) point to?**Group 5: a line shows what a reference word points back to.

Two images from the lesson film d/t rule: the letters of vindt as tiles, and the three steps: first the stem — **The d/t rule in three steps**Group 6: first the stem, only then the t. Visible letter by letter.

Group 6 lesson ‘The Secret Mission of Words’ — how texts get into your brain — **The Secret Mission of Words**Group 6: discover how texts get into your brain without you noticing.

Theory card ‘Licht toe’ (Explain) — supporting an opinion with an example — **Difficult concepts, simply explained**Every rule with a recognisable example from real life.

Lesson ‘The Secret Code of the Doorstroomtoets’ — crack the instruction words — **The Secret Code of the Doorstroomtoets**Group 8: crack the instruction words and show what you really know.

Lesson ‘Reading Comprehension Detective’ — fact versus opinion — **Reading Comprehension Detective**Group 8: which writer is telling the truth — fact or opinion?

← Swipe to browse the examples →

On track all year round

Not just in group 8 — preparation for every single test

Schools test your child throughout the school year to see whether they are on track. SlimSnap practises exactly those moments, from group 3 up to the Doorstroomtoets in group 8.

Around January · group 5–8

📍

The M tests (mid-year)

Halfway through the year, schools check where your child stands. SlimSnap has separate mid-year (M) tests for reading and maths, so practice ties in with what the school does.

Around May · group 5–8

🌱

The E tests (end of year)

At the end of the year, what counts is how much your child has grown. With the end-of-year (E) tests and practice tests, your child practises at a realistic level in the run-up to the summer.

February · group 8

🎓

The Doorstroomtoets

In group 8 comes the Doorstroomtoets, the final test — language and maths. SlimSnap trains the real question formats, so that it will feel familiar instead of nerve-racking.

The Doorstroomtoets package for group 8 →

48 reading comprehension practice tests · 16 boss exams · mid-year (M) and end-of-year (E) tests for reading and maths (group 5–8) · full Doorstroomtoets preparation. For group 3 and 4: playful practice tests to get used to it early.

Parents often still call these tests "the Cito test". SlimSnap is not a Cito partner and is not affiliated with Cito. What exactly does that mean, and where can you practise? →

Lesson film Reference words: a line shows that hij (he) points to Rex and hem (him) to the apple

The real problem

Your child reads fluently, but stumbles over the test questions?

That makes sense. Reading comprehension does not improve on its own through "just reading more". A child can read a text aloud flawlessly and still understand little of it. What good readers do naturally — predicting, summarising, following reference words, separating main points from side issues — weaker readers do not pick up automatically. It has to be modelled.

🎬 Pictures with the language. Scenes and diagrams show what a reference word points to or how a cause leads to an effect.
🏠 Concepts from everyday life. New words connect to what your child already knows, so the knowledge sticks.
🪜 Explanation → practice → test. Every strategy is first modelled, then practised, and only then tested.
💬 Help with every mistake. No bare "wrong", but a short explanation in child-friendly language: "look, this is how it works".

See what a lesson looks like →

How it works

The same clear path in every lesson

No complicated setup — for parents and children alike. Just choose the group and start.

💡

Explanation with pictures

Every idea is modelled with a recognisable scene or a clear diagram — language and maths.

✍️

Practising on their own

Short, focused questions with instant feedback. With every mistake, an immediate explanation in child-friendly language.

🎯

Tests & review

A practice test shows what has already sunk in; mistakes come back automatically later until they are mastered.

Why SlimSnap

Serious test preparation that feels like a game

Deep content and real motivation in one app — built for the whole of primary school, fairly priced and safe for your child.

🗓️

All year, every test

Not just group 8. SlimSnap practises along all school year — the mid-year (M) and end-of-year (E) tests and the Doorstroomtoets, group 3–8.

🧮

Language and maths, connected

Not a separate language or maths offering, but both deliberately linked — because reading and maths strengthen each other.

🎯

Real question formats & explanations

We train the question formats that come up in the tests, tagged per skill, with targeted explanation after every mistake — not just right or wrong.

🎬

Pictures that make the abstract visible

Cinematic scenes and diagrams anchor language and maths concepts in your child's world. Understanding comes faster with pictures.

🔁

Mistakes come back automatically

Smart repetition (spaced repetition) brings back wrongly answered questions until your child masters them, and the level adapts.

🛡️

Safe and fair

No ads and no dark patterns in the app. Instead, a parent dashboard, a sleep timer and a fair yearly price.

All features in detail →

Two children playing a learning adventure in SlimSnap — learning feels like gaming

The science behind it

Why children keep on practising

Behind every reward, streak and word of encouragement lies a proven learning principle. SlimSnap combines spaced repetition, adaptive learning, variable rewards and a growth-mindset coach so that motivation and real understanding grow together — without addictive tricks.

🦊 Mascot Snip encourages, comforts after setbacks and celebrates every win.
🔥 Streaks and milestones build a daily habit.
🧘 Short sessions with a sleep timer — meant to be finished, not endless.

Discover the approach & psychology →

By school year

What your child learns in each group

Each school year has its own topics for language and maths — matched to what the national tests measure.

Group 3

Sounds & lettersCounting to 20Splitting numbersPunctuationTelling the timeLogical thinking

Plans

A whole year of practice for less than one month of tutoring

One fair yearly price for language and maths. No hidden costs and no automatic renewal — you pay once for a whole year of access.

✅ First lesson of every topic always free — no account needed

One group

€14,90

one year of access — one school year of your choice · group 6, 7 or 8: €19.90

All language and maths lessons for one group
Lesson films, mistake analysis & daily set
Practice tests & smart repetition
Gamification (XP, gems, avatars)
Parent dashboard included
No automatic renewal

Choose your group →

📗 Lower years

Group 3-4-5

€29,90

one year of access — group 3, 4 and 5 ≈ €2.49/month

Group 3, 4 and 5 unlocked
Language and maths + Logical Thinking
Lesson films, mistake analysis & daily set
Spelling, sounds, times tables, clock & money
Ideal for families with several children
No automatic renewal

Choose this package →

🎯 Upper years

Group 6-7-8

€39,90

one year of access — group 6, 7 and 8 ≈ €3.33/month

Group 6, 7 and 8 unlocked (language + maths)
Lesson films, mistake analysis & daily set
1,000+ lessons & 90+ practice tests
12 boss exams (M and E level)
Full Doorstroomtoets preparation
No automatic renewal

Choose this package →

🎓 Group 8

Group 8 · Doorstroomtoets package

€19,90

one year of access to group 8 — with the Doorstroomtoets as the final boss

All language and maths lessons for group 8
5 complete Doorstroomtoetsen, plus separate Doorstroomtoetsen for reading & maths
Explanation for every mistake & smart repetition
No automatic renewal

Choose the Doorstroomtoets package → What's included? →

A one-off purchase for one year of access — not renewed automatically, so there is nothing to cancel. After a year, access simply ends; you renew yourself whenever you like. Pay via Mollie — iDEAL, Bancontact, credit card, Apple Pay, Google Pay. Terms and Conditions — Privacy Policy.

Frequently asked questions

Everything parents want to know

About content, tests and safety. More questions? E-mail contact[at]slimsnap.nl.

Does SlimSnap do maths too, or only language?

Both. There are 160 maths lessons for group 3–8 — from counting and times tables to fractions, percentages and graphs — alongside more than 800 language lessons. It is the combination that makes the difference: many maths mistakes are really reading mistakes.

Does it only prepare for the Doorstroomtoets?

No. SlimSnap practises all year round, including for the tests schools give halfway through (M) and at the end (E) of the year in group 5–8. The Doorstroomtoets in group 8 is the finale, not the only goal. For group 3 and 4 there are playful practice tests.

Does it match the school's teaching method?

SlimSnap is method-independent: it practises the skills that national tests measure, not a specific school method. That is why it fits every school.

How does my child learn from their mistakes?

After a mistake your child first gets a tip and a second chance, then a short explanation in child-friendly language — in Dutch. Wrongly answered questions come back in the daily set and through smart repetition until your child masters them. The mistake analysis points out which part is still difficult and sets up a short catch-up route.

Is it safe and privacy-friendly?

Yes. No ads in the app, and we never sell data. You don't even need an account to get started. We comply with the GDPR (AVG) and use rewards ethically — no addictive tricks, but a sleep timer and a parent dashboard instead.

How do I log in — do I need a password?

There is no password. Your e-mail address is your access. After purchase, access is active straight away on that device. On a new device — or if you clear your browser data — open the app, tap “Toegang herstellen” (Restore access) and enter the same e-mail address. Done.

I have more than one child. Can that work on one device?

Yes. On the same device you create a profile for each child, each with its own group and its own progress — so you don't need a second tablet. Did you buy a group for each child? Then choose, for each profile, the group that belongs to that child.

Can I see how it's going?

Yes. The parent dashboard shows your child's progress and weak points, plus how long they have practised. So you know where your child stands without homework battles.

What does it cost, and does it renew automatically?

A year of access costs €14.90 for one lower-years group (3, 4 or 5), €19.90 for one upper-years group (6, 7 or 8), €29.90 for all the lower years or €39.90 for all the upper years. The first lesson of every topic is free. It is a one-off purchase: no automatic renewal, so there is nothing to cancel. After a year, access simply ends; you renew yourself whenever you like.

Does it work on phones and tablets?

Yes. SlimSnap works straight in the browser on phone, tablet and computer — no installation needed, and after first use also offline. There is also a dyslexia mode with a calmer font and wider spacing.

Ready to start?

No test-week stress —
just on track all year round

The first lesson of every topic is free — language and maths. No account, no credit card. For less than the price of one month of tutoring.

✨ Start free — open the app

✨ Try for free — open the app