A free dyscalculia test that shows where numbers get hard
Dyscalculia.io is a free online dyscalculia screening test and a paid daily number-skills practice program for children from age 4, teenagers and adults, both running in the browser. Five short games map how you see, compare and remember numbers. Then short daily exercises train exactly the part that needs it.
Let's play 5 quick games!
There's no wrong answer. The games show how you see, compare and remember numbers.
Under 5 minutes · free · no sign-up
Everything runs in your browser. Answers are not sent anywhere.
Screening, not a diagnosis. Nothing you enter leaves your device.
Short answer
What is Dyscalculia.io?
Dyscalculia.io is a free online dyscalculia screening test and a paid daily number-skills practice program for children from age 4, teenagers and adults, both running in the browser. The test is five short games, under 5 minutes and with no account, that measure subitizing, number comparison, quantity estimation, number-line placement and working memory; the result shows a strength and a focus area. It is a screening tool, not a diagnosis.
- Free, no sign-up, and answers stay on your device.
- Takes under 5 minutes and works for children from age 4 and for adults.
- Uses the same five games as the Dyscalculia app for Android.
- Available in English, German, French, Spanish, Dutch and Brazilian Portuguese.
5
short number games
<5 min
to finish the test
4+
years old, up to adults
6
languages
Free
test and result, no sign-up
How dyscalculia support works here
- 1
Play five short games
Count dots, compare numbers and groups, place a number on a line, remember digits. Under 5 minutes, in the browser.
- 2
See the number-skills profile
A strength and a focus area across four skills, explained in plain language — for a child or for yourself.
- 3
Practise 5–10 minutes a day
The web program turns the profile into a daily plan with a fox guide and four age worlds: difficulty adjusts within each level, and missed questions come back for review — right in your browser.
Why Dyscalculia.io?
Dyscalculia.io suits families and adults who want a free first check of basic number skills and then a short daily practice routine, from age 4 to adult, all in one place in the browser. It is also clear about its limits: the test is a screening, not a diagnosis, and the program is practice, not a replacement for a specialist.
5–10 minutes a day
Each day's plan starts with a short spaced review: missed questions come back the same day, and dot patterns, ten-frames and small sums answered correctly come back after 1, 3, 7 and 30 days. Then comes a level in the focus skill your free test found; within a level, difficulty moves one step up after quick, correct answers and one step down after misses. The default daily goal is 10 minutes.
Four age worlds, from 4 to adult
There are 4 worlds, for ages 4–6, 7–9, 10–12 and 13 to adult, with 196 levels across 10 exercise types. One account per learner, so each plan follows one person's profile, and a parent can switch the age world.
A parent area behind a parent check
A two-digit addition question guards the parent area and payments. There you see the minutes practised over the last 7 days, set a daily goal of 5 to 30 minutes and an optional daily time limit of 10 to 60 minutes; when the limit is reached, only a parent can add 15 more minutes.
Built on number-sense research
The games train basic skills that research links to dyscalculia: seeing small amounts at a glance, comparing numbers and quantities, the mental number line and working memory, plus adding and subtracting. It is practice software, and it promises no particular result.
When to go elsewhere
A formal diagnosis or exam accommodations need an assessment by an educational psychologist or neuropsychologist. The program gives short in-game feedback, not a tutor's explanations, it is not made for children under 4, and the web subscription does not unlock the Android app.
Test and program in one place
The free test (5 games, no account, answers stay on your device) and the daily program are on one site, in the browser, with no download, in 6 languages. A free account opens the first 5 levels of every world; the full program is $9.99 a month or $39.99 a year, with no trial period.
The 5 games in the free dyscalculia test
- 1 / 5
Count the Dots
Seeing small amounts at a glance, without counting one by one.
- 2 / 5
Which is Bigger?
Linking a digit to the amount it stands for.
- 3 / 5
Which Group Has More?
Judging which of two groups is larger — the approximate number sense.
- 4 / 5
Place the Number
Placing numbers in order and in proportion on a 0–100 line.
- 5 / 5
Remember the Digits
Holding a sequence of digits in working memory.
- Free
- In your browser
- No download
- No sign-up
The four number skills behind dyscalculia
Research on dyscalculia points to a small set of basic number skills. The test and the exercises are organised around them.
Number Sense
Seeing small amounts at a glance and comparing quantities.
Space & Position
Placing numbers on a mental number line and comparing their size.
Fact Memory
Holding numbers in mind while working with them.
Arithmetic Flow
Adding and subtracting fluently — practised in the daily program.
Four worlds, one for each age
The fox guides your child through a world that fits their age: seven units of seven levels each, from counting friends in the forest to speed maths in the real world. Each unit trains one number skill.
4
age worlds
49
levels in each world
196
levels in total
10
exercise types
5
free levels in every world
Number Forest (4–6)
49 levels- Count Friends
Ten Pals
More or Fewer
Walk the Line
Adding Friends
Little Numbers
Remember Me
Number Kingdom (7–9)
49 levels- Bigger Number
Royal Ten
Scroll Memory
Kingdom Race
Sum Treasury
Quick Eye
Hero's Challenge
Number Academy (10–12)
49 levels- Compare Fast
Lab Line
Atom Memory
Equation Gear
Lab Signal
Pattern Lab
Master Challenge
Real World (13+)
49 levels- Real-World Signals
Map Master
Working Weight
Speed Math
Cross-Muscle
Precision Drill
Final Form
Daily dyscalculia practice in your browser
196 levels, 10 exercise types and spaced review that brings missed questions back the same day and practised number facts after 1, 3, 7 and 30 days. It starts from the focus area in your test profile and works on any computer, tablet or phone, for ages 4 to adult.
Try 5 levels freeAlso available as an app for Android:
Learn about dyscalculia
Understand dyscalculia
- What is dyscalculia?Dyscalculia is a specific learning difficulty with numbers. Here is what the word means, how common it is, what causes it, which skills it affects and what helps.
- Dyscalculia symptomsThe signs of dyscalculia look different at 5, at 10 and at 30. Here is what to watch for at each age, what else the signs can mean and what to do next.
- Dyscalculia in adultsDyscalculia does not end with school. How it shows up in adult life, how to get support as an adult and strategies that make numbers easier.
- How dyscalculia is diagnosedWho carries out a dyscalculia assessment, what happens during the evaluation, which criteria are used — and where a free online screening fits in before all of it.
- Dyscalculia vs dyslexiaOne affects numbers, the other reading and spelling. They often occur together, but they are different learning difficulties with different roots — and each needs its own screening and support.
- Dyscalculia statisticsAbout 3 to 6 in every 100 school-age children have dyscalculia, depending on the criteria used; in a class of 30 that is one or two pupils. Every figure below shows its own year and a source you can check, and no country we looked at publishes an official count of dyscalculia alone.
Help at home and school
- How to helpDyscalculia does not go away on its own, but the right kind of help makes numbers far more manageable. Here is what that help looks like, who can give it and what to avoid.
- AccommodationsAccommodations change how a pupil with dyscalculia is taught and tested, not what they are expected to learn. Here is what is common, how to ask for it and what the main school systems call it.
- Dyscalculia exercisesShort activities with dice, cards, counters and a number line that practise the basic number skills behind dyscalculia — grouped by skill and age, 5–10 minutes a day.
Frequently asked questions
Is the dyscalculia test really free?
Yes. The test and the result are free and need no account. The optional daily practice program runs in your browser; the first 5 levels of each age world are free with an account, and a parent area with a daily time limit sits behind a parent check.
Can an online test tell if I have dyscalculia?
No online test can diagnose dyscalculia. A screening like this one shows which number skills take extra effort, which helps you decide whether to seek a professional assessment.
What age is the test for?
Children from about age 4, teenagers and adults. Choose who is taking the test before you start; adults can use the dyscalculia test for adults.
What happens to my answers?
They stay in your browser. Nothing is sent to a server, and closing the tab clears them.
What is dyscalculia?
Dyscalculia is a specific learning difficulty with numbers: understanding quantities, learning number facts and calculating. Read the full explanation.