The library

Twelve games. Two coming to iPad first.

Every Cairn game builds one real skill that child-development researchers can name and measure, for ages 3 to 6. Roll over a game for the short version: the game, the science, the result. Click any game for the full science and a by-age guide you can use at home, even if your kid never touches the app.

Age 3Age 4Age 5Age 6

Coming to iPad · $3.99 once

Cairn Read

Reading

Letter sounds to first sentences, taught in the order the research actually recommends.

The science
  • Systematic synthetic phonics has the strongest evidence base (NRP, 2000).
  • Letters arrive in SATPIN order, so kids build real words on day one.
  • Every sentence is decodable, with a picture check for meaning.
The game
  • Smash letter blocks through maze worlds.
  • Feed letters to a hungry monster until it burps.
  • Trace letters with a fingertip, then beat a boss every fifth level.

Kids love this one!

4.7 · early testers

Most “reading” apps are a cartoon with letters glued on. This one teaches the thing.

See the science →
Coming to iPad · Free

Snake Munch

Play and motor control

Steer the snake, munch the snacks, grow. Pure play, tuned for little hands.

The science
  • Self-directed play is where kids rehearse planning and focus.
  • Drag-to-steer builds the hand-eye control behind handwriting.
  • No game-over screen, so there is no failure to dread.
The game
  • Steer a hungry snake with one finger.
  • Munch snacks and grow gloriously long.
  • Chase hats, power-ups, and new worlds. Nobody loses, ever.

Snakes get gloriously, ridiculously long.

4.8 · early testers

No timers, no lives, no “you failed.” A four-year-old should not be taught to dread a game-over screen.

See the science →
In design

Cairn Number

Number sense

Counting, how many, and the first idea that numbers can be taken apart and put back together.

The science
  • Number sense, not memorized sums, predicts later math.
  • The last number you count is how many there are (Gelman & Gallistel).
  • Seeing amounts at a glance is an early math superpower.
The game
  • Tap and count real things, out loud.
  • Snap number bonds together with blocks.
  • Quick how-many flashes to beat your own eye.

Quietly the most addictive one.

We are not teaching your three-year-old to do timed arithmetic. Nobody should be.

Read the science →
In design

Cairn Memory

Working memory

Remember-and-find games that gently stretch how much a little mind can hold at once.

The science
  • Working memory is the workspace behind reading and math.
  • It grows steadily across ages 3 to 6 with the right practice.
  • Short, playful, just past comfortable is how memory sticks.
The game
  • Flip and match hidden pairs.
  • Remember where the star was hiding.
  • Spot what changed, then repeat the sequence back.

Fair warning: kids beat grown-ups at this.

Memory matters. Memorizing that an ad rewards you for watching does not. We skip that part.

Read the science →
Planned

Cairn Pattern

Reasoning

What comes next? Finishing patterns is how a child first learns to think in steps.

The science
  • Patterning in preschool predicts later math (Rittle-Johnson).
  • Finding a rule is the first form of real reasoning.
  • It grows from what repeats to what changes, and why.
The game
  • Finish the red-blue-red-blue.
  • Spot the one that does not belong.
  • Fix a broken pattern, then crack the secret rule.

The “I got it” face is the whole point.

The thinking skill behind a lot of “gifted” test prep. We just call it a game and skip the flashcards.

Read the science →
Planned

Cairn Build

Visual and spatial

Look at the shape, then build it. Blocks, in your hands and on the screen.

The science
  • Early block skill predicts math and spatial ability years on (Verdine, Newcombe).
  • Spatial skill is trainable, not a fixed gift.
  • Words like edge and between power the thinking.
The game
  • Copy the tower from a picture.
  • Turn and fit the pieces.
  • Find the missing block, then build it backwards.

Knocking the tower down counts as winning.

Spatial skill predicts engineering degrees. It also just feels great to build a tower. Both are true.

Read the science →
Planned

Cairn Word

Vocabulary

New words and how they fit together, for the talkers at the older end of the band.

The science
  • Vocabulary is the half of reading that decoding cannot reach.
  • Words grow through rich talk, not flashcards.
  • Depth means knowing what a word is like, not just what it means.
The game
  • Name the picture in real, juicy words.
  • Sort words into families and match opposites.
  • Catch the joke that turns on two meanings.

Tiny humans, enormous words.

A child can decode every word on a page and understand none of it. Vocabulary is the half nobody gamifies. We will.

Read the science →
Planned

Cairn Sort

Self-control

Which ones go together? Sorting games that quietly build self-control and focus.

The science
  • Self-control predicts outcomes as strongly as IQ (Moffitt).
  • Sorting by a rule, then a new rule, trains it (Zelazo).
  • All of it is trainable in early childhood (Diamond).
The game
  • Sort by color, then suddenly by shape.
  • Catch yourself before the obvious wrong answer.
  • Find a second way to group the same things.

The rule flips and they gasp every time.

Executive function predicts life outcomes better than IQ. Engagement-loop apps actively erode it. We are on the other side.

Read the science →
Planned

Cairn Find

Attention

Spot it fast. Looking games that build focus and the speed to act on it.

The science
  • Attention underpins almost all early learning.
  • Processing speed frees a child to think while they work.
  • We build speed on top of accuracy, never instead of it.
The game
  • Spot the one duck on a calm page.
  • Find them all before the gentle timer.
  • Hunt the difference, then beat your own best time.

Eagle eyes, engaged.

We train attention the honest way, not by hijacking it. There is a difference, and your child's brain knows it.

Read the science →
Planned

Cairn Sound

Hearing sounds in words

Hearing the little sounds inside words, for the littlest ones, before letters even start.

The science
  • Hearing the sounds in words is the best early reading predictor.
  • It is an ear skill, not a print skill.
  • Rhyme and blending come before any letter.
The game
  • Match the words that rhyme.
  • Clap the beats in a name.
  • Blend c-a-t into cat, then swap a sound for a new word.

Expect silly rhymes at the dinner table.

The most important pre-reading skill happens with your ears, not a screen. So this one nudges you to put the screen down and sing.

Read the science →
Planned

Cairn Story

Understanding

First, next, last. Putting picture stories in order, which is where understanding begins.

The science
  • Oral story skill predicts later reading comprehension.
  • Sequencing, and why, come before letters.
  • A good question and time to answer it is the whole method.
The game
  • Put the picture story in order.
  • Guess what happens next.
  • Spot how a character feels, then tell it back your way.

They always direct their own ending.

Comprehension is the whole point of reading, and it is the part most apps quietly skip. We start it before letters.

Read the science →
Planned

Cairn Feelings

Big feelings and self-control

Naming big feelings and learning to ride them out. The skill no other kids' game is racing to teach.

The science
  • Naming a feeling calms the brain's alarm (affect labeling, Lieberman).
  • Self-regulation predicts wellbeing and friendships (Diamond, Moffitt).
  • Kids borrow a calm grown-up's nervous system first.
The game
  • Name the feeling on a calm face.
  • Take three dragon breaths together.
  • Catch a big feeling rising, and find the way back to calm.

A game that helps the meltdown pass.

Every other app is engineered to make your child harder to put down. This one is built to help them settle. Read that twice.

Read the science →