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Learning & Reference
168 appsLearning & Reference: Reading & Words
4 appsText · CheckGrade 4 Writing CheckerCheck if your sentences and word choices are friendly for a typical fourth-grade reader.Text · CheckKids Readability CheckerSee how easy your writing is to read and spot words that may slow a young reader down.Text · CheckSimple Word CheckerCheck whether a word is on the list of words most fourth graders know.Text · CheckTricky Word FinderFind the less familiar words in a story, lesson, or note so you know what to explain.
Learning & Reference: Early Reading
5 appsText · CheckAlphabet Flipbook Maker for KidsPick a starting letter and turn through six big letter-and-word pages.Text · CheckEarly Reader CheckerCheck a short passage against familiar words used by children who are learning to read.Text · GenerateEasy Sentence BuilderBuild short practice sentences from familiar early-reader words.Text · CheckFirst Reader Word CheckerCheck one word at a time to see if many beginning readers may know it.Text · GenerateReading Practice MakerTurn a few familiar words into quick read, find, and write practice cards.
Learning & Reference: Vocabulary & Words
7 appsWord data · CheckKid ThesaurusFind familiar words connected to your idea without ads, accounts, or tricky definitions.Word data · CheckPoetry Word Bank for KidsMake short, medium, and long word lists around one idea for your next poem.Word data · CheckSimple Word Swap Finder for KidsTurn a long word into shorter choices that may be easier to read and explain.Word data · CheckStronger Word Finder for KidsFind longer, more colorful word choices for stories, poems, and school writing.Word data · CheckVocabulary Flipbook Maker for KidsAdd six words and make a page-turning book with simple meanings or drawing prompts.Word data · CheckVocabulary Ladder Maker for KidsFollow a playful chain where every new word connects to the word before it.Word data · CheckWord Web Maker for KidsPut one word in the middle and build a clear web of connected ideas around it.
Learning & Reference: Phonics & Rhymes
10 appsWord data · CheckAlliteration Word Finder for KidsFind familiar words that begin with the same sound for silly sentences and poems.Word data · CheckFirst and Last Sound Finder for KidsSlow a word down and see the speech sound at its beginning and at its end.Word data · CheckHomophone Finder for KidsFind familiar words that sound the same but may have a different spelling or meaning.Word data · CheckPoetry Meter Checker for KidsTurn one short poetry line into a clear pattern of strong and soft syllable beats.Word data · CheckPronunciation Decoder for KidsTurn dictionary sound codes into short, friendly chunks you can read from left to right.Word data · CheckRhyme Finder for KidsFind familiar words with the same ending sounds for poems, songs, and word games.Word data · CheckRhyming Pair Checker for KidsCheck two words and learn whether their last strong vowel and ending sounds match.Word data · CheckSyllable Clapping PracticeType one word and get a big clap marker for every vowel beat you should hear.Word data · CheckSyllable Counter for KidsCount the vowel beats in a short sentence and see the count for every word.Word data · CheckWord Stress Finder for KidsSee which syllables have a strong beat and which syllables have a softer beat.
Learning & Reference: Math Learning
10 appsNumber · CheckCombination Counter for KidsFind how many different groups you can choose when the order does not matter.Number · CheckFactorial Explorer for KidsSee how a factorial multiplies a whole number by every smaller positive number.Number · CheckFraction Simplifier for KidsReduce a fraction to its simplest form and see the number used to divide it.Number · CheckGoldbach Prime Pairs ExplorerSplit an even number into two prime numbers and discover a famous math pattern.Number · CheckGreatest Common Factor Finder for KidsFind the biggest whole number that divides two numbers with nothing left over.Number · CheckLeast Common Multiple Finder for KidsFind the first positive number that two whole numbers both divide evenly.Number · CheckMean, Median, and Mode for KidsCheck a short number list and see its mean, median, mode, and range together.Number · CheckNumber to Words for KidsTurn a number into clear English words for homework, checks, and reading practice.Number · CheckPrime Factor Tree MakerBreak a number into the small prime numbers that multiply to make it.Number · CheckPrime Number Checker for KidsCheck whether a whole number is prime and see every factor that divides it evenly.
Learning & Reference: Math Writing
4 appsLaTeX · GenerateEquation Editor for KidsType fractions, roots, powers, and full equations with a friendly math keyboard.LaTeX · GenerateFraction Builder for KidsBuild neat stacked fractions and combine them with plus, minus, and times signs.LaTeX · GenerateMath Symbol Keyboard for KidsFind and type common math symbols without hunting through a computer keyboard.LaTeX · GeneratePrintable Equation Sheet MakerType a clean math problem, add a title, and print a simple practice page.
Learning & Reference: Handwriting Practice
2 appsLearning & Reference: Music Learning
2 appsLearning & Reference: Science Labs
5 appsSimulation · GenerateBall Drop Physics LabDrop bright balls onto ramps and see how gravity guides every roll and bounce.SVG · GenerateCommon Molecule Explorer for KidsExplore the shapes behind caffeine, sugar, aspirin, vitamin C, and more.SVG · GenerateMolecular Formula FinderDraw a molecule from SMILES and find its molecular formula in one clear step.SVG · GenerateMolecule Coloring Page MakerMake a clean black-and-white molecule picture to print, trace, or color.SVG · GenerateMolecule Structure DrawerTurn a short chemistry code into a clear picture of atoms and bonds.
Learning & Reference: Feelings & Emoji
3 appsEmoji · GenerateEmoji Check-In MakerMake a simple set of emoji choices for a classroom, family, or team check-in.Emoji · CheckEmoji Mood MeterChoose an emoji and see whether it usually feels sunny, mixed, or tough.Emoji · ViewFeelings Emoji SorterSort emoji into sunny, mixed, and tough feeling groups.
Learning & Reference: Emoji Word Play
2 appsLearning & Reference: Citations & Research
1 appLearning & Reference: Culture & Dates
4 appsReference · ConvertChinese Lunar Date ConverterTurn a Gregorian date into its Chinese lunar date, zodiac year, and solar term.Reference · ViewChinese Zodiac FinderFind the Chinese zodiac animal and traditional year name for any birthday.Reference · CalculatePrayer Times CalculatorCalculate daily Islamic prayer times from a date, location, and trusted calculation method.Reference · ViewQibla Direction FinderFind the compass direction toward the Kaaba from any latitude and longitude.
Learning & Reference: Sky & Science
4 appsAstronomy · CalculateEquinox & Solstice CalculatorFind the exact equinox and solstice times that mark the four astronomical seasons.Astronomy · CalculateMoon Phase FinderSee the Moon's phase, illumination, and the next four quarter phases for any date.Astronomy · CalculateNext Eclipse FinderFind the next solar and lunar eclipses after any date with their type and peak time.Astronomy · CalculateSunrise & Sunset CalculatorCalculate sunrise, sunset, and daylight length from a date and coordinates.
Learning & Reference: Countries & Travel
7 appsWorld data · ViewCountry Calling Code FinderFind the international phone prefix for any country, or search a prefix to see possible countries.World data · ViewCountry Comparison ToolCompare two countries side by side by area, region, currencies, languages, and borders.World data · ViewCountry Currency FinderFind the currency name, code, and symbol used by any country.World data · ViewCountry Fact FinderLook up a country's capital, region, codes, currencies, languages, area, and neighbours.World data · ViewCountry Language FinderSee the listed languages and native country names for any country.World data · ConvertPlus Code DecoderDecode a full Plus Code into its center coordinates and covered area.World data · GeneratePlus Code GeneratorTurn latitude and longitude into a shareable Plus Code that works without a street address.
Learning & Reference: Everyday Checks
4 appsReference · CheckIBAN Checker & FormatterCheck an IBAN's country structure and checksum, then format it into readable groups.Reference · CheckInternational Phone Number CheckerCheck whether an international phone number has a possible and valid shape, then format it clearly.Reference · CheckISBN Checker & ConverterValidate ISBN-10 or ISBN-13, add correct hyphens, and convert between book-number formats.Reference · ViewPhone Number Country FinderFind the likely country and calling code for an international phone number.
Learning & Reference: 3D Chemistry
6 appsSVG · Generate3D Atom Color ExplorerLearn the common colors used for carbon, hydrogen, nitrogen, and oxygen atoms.SVG · Generate3D Molecule Viewer for KidsTurn, zoom, and compare familiar molecules in a clear interactive 3D lab.SVG · GenerateCaffeine Molecule 3D ExplorerTurn the 24 atoms in a caffeine molecule and see its two joined rings.SVG · GenerateDNA Base 3D Explorer for KidsMeet adenine, one of the four letter-like bases that help make DNA.SVG · GenerateMolecule Shape Explorer for KidsCompare straight, bent, flat, pyramid, and tetrahedron molecule shapes.SVG · GenerateMolecule Style Switcher for KidsSwitch one molecule between balls, sticks, filled atoms, and simple lines.
Learning & Reference: Accessible Reading
5 appsText · CheckHyperlegible Reading Preview for KidsPreview a short passage with distinct letter shapes, large type, and roomy lines.Printable · GenerateLarge-Print Reading Card MakerTurn a short direction, reminder, or fact into a clear large-print card.Text · CheckOpenDyslexic Reading PreviewPreview your own passage in OpenDyslexic and choose the size and spacing you prefer.Text · CheckOpenDyslexic Reading Ruler for KidsHighlight one line, then move the reading ruler up or down through a short passage.Text · CheckSpaced Reading Card Maker for KidsAdjust letter, word, and line spacing to make a reading card that feels comfortable.
Learning & Reference: Animals & Nature
1 appLearning & Reference: Classroom Printables
1 appLearning & Reference: Communication
3 appsEmoji · CheckClassroom Choice Board for KidsChoose art, music, a book, a game, a ball, or a bike with one clear tap.Emoji · CheckFeelings Communication Board for KidsTap a big face to share happy, sad, angry, worried, tired, or calm feelings.Emoji · CheckNeeds Communication Board for KidsTap a clear picture to ask for a drink, food, help, the bathroom, rest, or a talk.
Learning & Reference: Countries & Cultures
4 appsQuiz · CheckCountry Calling Code Finder for KidsType the digits after a plus sign and see which countries use that calling code.Quiz · CheckCountry Facts Explorer for KidsSee a country's flag, capital, continent, languages, money, and calling code.Quiz · CheckWorld Currencies Explorer for KidsPick a currency and see its name, symbol, code, and places that use it.Quiz · CheckWorld Languages Explorer for KidsPick a language, read its local name, and see countries where it is listed.
Learning & Reference: Creative Coding
3 appsArt · GenerateTurtle Code Drawing PlaygroundGive a turtle a few simple commands and watch it draw a bright picture one line at a time.Art · GenerateTurtle Coordinate Path BuilderSend the turtle to x and y points and see those coordinates join into a clear path.Art · GenerateTurtle Polygon MakerChoose the number of sides and see how forward steps and equal turns make a polygon.
Learning & Reference: Daylight Tables
3 appsCoordinates · CalculateDaylight Comparison ToolCompare daylight length, sunrise, and sunset between two dates at the same location.Coordinates · CalculateMonthly Daylight TableBuild a full month of sunrise, sunset, and daylight durations for one place.Coordinates · CalculateWeekly Daylight TableBuild a seven-day sunrise, sunset, and daylight table from one starting date.
Learning & Reference: Learning Quests
11 appsText · CheckChore Level-Up Chart for KidsCheck off a few useful home jobs, add your own chore, and watch a simple hero level grow.Text · CheckClassroom Team Quest Board for KidsTrack shared jobs for taking turns, hearing every voice, finishing a goal, and cleaning the team space.Text · CheckConfidence Shield Builder for KidsBuild a short reminder from a strength, helpful thought, next move, and shield symbol.Text · CheckDaily Kindness Quest for KidsPick a safe, free kindness idea for an ordinary day and celebrate when the small quest is done.Text · CheckHealthy Habit Hero for KidsTrack water, enjoyable movement, helpful food, and sleep preparation without chasing perfection.Text · CheckHomework Quest Board for KidsBreak homework into clear missions, finish one step at a time, and build a simple experience bar.Number · CheckMath Monster Battle for KidsSolve addition, subtraction, multiplication, division, and halving puzzles to fill a victory bar.Text · CheckReading Adventure Timer for KidsChoose a five, ten, fifteen, or twenty minute reading quest and track one calm session.Word data · CheckSpelling Spellbook Quest for KidsRead a friendly clue, type the hidden word, and use a sound-part hint when you need help.Text · CheckStudy Potion Focus Timer for KidsChoose a short focus quest, use the big timer, and mark the session done when it is time to rest.Word data · CheckVocabulary Treasure Hunt for KidsFind six word treasures by choosing the word that fits each clear, fifth-grade-friendly meaning.
Learning & Reference: Letters & Numbers
1 appLearning & Reference: Light & Twilight
6 appsCoordinates · CalculateAstronomical Darkness PlannerFind when astronomical night starts, ends, and reaches its darkest point.Coordinates · CalculateBlue Hour CalculatorEstimate morning and evening blue hour using the sun's minus 8 to minus 4 degree range.Coordinates · CalculateCivil Twilight PlannerFind the morning and evening civil-twilight windows around sunrise and sunset.Coordinates · CalculateDaylight Length CalculatorCalculate daylight, night length, sunrise, and sunset for a date and place.Coordinates · CalculateNautical Twilight PlannerFind when nautical twilight begins and ends before dawn and after dusk.Coordinates · CalculateTwilight Times CalculatorList astronomical, nautical, civil, sunrise, sunset, and night times in order.
Learning & Reference: Maps & Geography
3 appsQuiz · CheckContinent Coloring Map MakerChoose a continent, color every country shape in it, and print the map.Quiz · CheckCountry Size Comparer for KidsPut two country outlines side by side and see which map shape takes up more space.Quiz · CheckWorld Map Explorer for KidsPick a country, see it light up on the map, and learn its capital and languages.
Learning & Reference: Math & Dot Art
3 appsArt · GenerateBinary Dot Picture MakerSee how rows of zeros and ones can switch dots off and on to draw a tiny picture.Art · GenerateDot Coordinate Grid ExplorerMove around a 16 by 16 dot grid and see the x, y, and index number for every spot.Art · GenerateTimes Table Dot Art MakerPick a times table and watch its products light up as a colorful dot pattern.
Learning & Reference: Minecraft Learning
9 appsQuiz · CheckMinecraft Biome Explorer for KidsPick a biome and learn its climate, temperature, precipitation, category, and dimension.Quiz · CheckMinecraft Block Facts Explorer for KidsPick a block and see its hardness, light, stack size, transparency, and best tool.Quiz · CheckMinecraft Block Hardness ComparerPut two blocks side by side and see which one is easier or harder to break.Quiz · CheckMinecraft Crafting Recipe Helper for KidsChoose a familiar item and see the ingredients in a clear three-by-three crafting grid.Quiz · CheckMinecraft Enchantment Explorer for KidsChoose an enchantment and see its highest level, item group, treasure flag, and trade flag.Quiz · CheckMinecraft Food Points Explorer for KidsPick a food and see how many food points it gives and how many fit in one stack.Quiz · CheckMinecraft Light Level Explorer for KidsSee how much block light comes from a torch, lantern, glowstone, and other bright blocks.Quiz · CheckMinecraft Mob Size Comparer for KidsChoose two mobs and compare their data-sized shapes from a tiny bee to a tall Enderman.Number · CheckMinecraft Stack Calculator for KidsTurn any item count into full stacks, extra items, and the number of inventory slots needed.
Learning & Reference: Moon Planning
4 appsCoordinates · CalculateMoon Photography PlannerCombine moon position, rise and set times, lit percentage, and phase for one shot time.Coordinates · CalculateMoon Position CalculatorCalculate moon altitude, compass direction, distance, and parallactic angle at one time.Coordinates · CalculateMoonrise & Moonset CalculatorCalculate local moonrise, moonset, and all-day horizon status for a place and date.Coordinates · CalculateSun & Moon Daily TimelineCreate one ordered local timeline for dawn, sun, twilight, moonrise, and moonset.
Learning & Reference: Museums & Art
3 appsArt · GenerateArt History Time Traveler for KidsSlide from ancient Egypt to the 1900s and uncover one museum object at a time.Art · GenerateArt Materials Explorer for KidsCompare paint, metal, clay, jade, wood, cloth, feathers, and other art materials.Art · GenerateMet Museum Object Explorer for KidsMeet cats, dragons, masks, paintings, toys, and more from the Met collection.
Learning & Reference: Reading Practice
1 appLearning & Reference: Space & Planets
7 appsSimulation · GenerateAlien Year Age CalculatorType your Earth age and count how many trips you would make around another star.Simulation · GenerateExoplanet Discovery Timeline for KidsTravel from a 1992 discovery to newer worlds found by watching stars and shadows.Simulation · GenerateExoplanet Distance Race for KidsRace two faraway worlds and see how many years even light would need to reach them.Simulation · GenerateExoplanet Explorer for KidsExplore 12 real faraway worlds and compare their stars, years, sizes, and distances.Simulation · GenerateExoplanet Size Comparer for KidsPut two exoplanets side by side and see how their sizes compare with Earth.Simulation · GenerateExoplanet Temperature Explorer for KidsCompare estimated temperatures on rocky worlds and giant planets far from Earth.Simulation · GenerateSpace Fact Flipbook for KidsExplore six clear pages about planets, the Moon, or stars.
Learning & Reference: Spelling Practice
3 appsPrintable · GenerateHyperlegible Spelling Sheet MakerGive up to ten spelling words distinct shapes and wide writing lines.Printable · GenerateOpenDyslexic Spelling Sheet MakerMake a printable ten-word spelling page in OpenDyslexic with wide writing lines.Text · CheckSpelling Word Magic RevealerScramble one spelling word, say it aloud, then watch every correct letter return.
Learning & Reference: Sun Position
7 appsCoordinates · CalculateObserver Height Sunrise CalculatorCompare sea-level sunrise and sunset with an observer standing above the horizon.Coordinates · CalculateShadow Length CalculatorUse the sun angle and an object's height to estimate its level-ground shadow length.Coordinates · CalculateSolar Noon CalculatorFind local solar noon, the day's highest sun angle, and the darkest night point.Coordinates · CalculateSolar Panel Sun Angle HelperFind the panel tilt and compass direction that faces the sun at one exact time.Coordinates · CalculateSun Position CalculatorCalculate the sun's altitude, compass direction, and horizon status for a place and time.Coordinates · CalculateSunrise Direction CalculatorCalculate the sunrise compass bearing, time, and plain direction for any place and day.Coordinates · CalculateSunset Direction CalculatorCalculate the sunset compass bearing, time, and plain direction for any place and day.
Learning & Reference: Systems Thinking
5 appsSimulation · GenerateBalancing Feedback Loop ExplorerWatch a fan push back against heat and help a room move toward balance.Simulation · GenerateCause-and-Effect Loop Maker for KidsName four connected ideas and watch a change travel all the way around.Simulation · GenerateEcosystem Loop Maker for KidsFollow rain, plants, animals, and soil around a simple meadow system.Simulation · GenerateHabit Loop Mapper for KidsMap how a cue, action, reward, and repeat can turn into a habit.Simulation · GeneratePositive Feedback Loop ExplorerSee how practice, skill, confidence, and motivation can help one another grow.
Learning & Reference: U.S. Geography
3 appsQuiz · CheckState Map Flashcards for KidsTurn over a state shape card to check its name, capital, and region.Quiz · CheckU.S. Regions Coloring Map for KidsColor the Northeast, Midwest, South, and West, then print the map.Quiz · CheckU.S. State Map Explorer for KidsPick a state, see it light up, and learn its capital and region.