ARRcade Numbers
Numbers app icon

Numbers

Place value you can touch.

Colour-coded flip cards that show children how numbers are built, from ones to millions, and then on to fractions, times tables, money, time and more.

iPhone · iPad · Android20 learning modesAges 4+ClassKit and SchoolworkNo ads, no data collected

Try it here

Build a number

This is the Whole Numbers mode, running right in your browser. Change any card and watch the expanded form follow along.

Numbers
7 cards

Tap to add one Double-tap to take one away Swipe up or down

The app has 19 more modes like this one, all built from the same flip cards.

20 learning modes

One set of cards, a whole curriculum

Every mode lays a concept out as a row of linked cards, so changing one shows how the others respond. Version 1.8 groups them in the mode strip and adds a full mode picker.

Number sense

Whole Numbers

Place value from ones to millions with up to 7 cards and the expanded form underneath.

Decimals

Thousands down to thousandths, with a visual decimal point and an expanded-form row.

Compare

Put two numbers side by side and decide which is greater, smaller or equal.

Rounding

Round 0 to 9999 to the nearest 10, 100 or 1000, with a rule card that explains why.

Primes

Explore which numbers are prime and which are not.

Roman Numerals

Any number from 1 to 3999, broken down by thousands, hundreds, tens and ones.

Operations

Add & Subtract

Addition and subtraction laid out as cards you can change one at a time.

Multiplication

Times tables from 1 to 12 with dot arrays and skip-counting sequences.

Division

Division set out card by card, the other side of the times tables.

Fractions and percentages

Fractions

Six linked cards: fraction, decimal, percentage, name, pie chart and an equivalent fraction.

Mixed Fractions

Move between improper fractions and mixed numbers, with wholes and remainders side by side.

Percentages

Find a percentage of any number, laid out as an equation with a bar showing the proportion.

Money and time

Money

Count dollars, pounds, euros and rupees in coins and notes, with the total updating as you go.

Time

Analog and digital clocks together, in 5-minute steps with hour and AM/PM rollover.

Elapsed Time

Work out how much time passes between a start and an end time.

Measurement

Length

Convert between centimetres, metres, kilometres and miles.

Weight

Convert between grams and kilograms.

Water Volume

Convert between millilitres and litres.

Area

See how length and width make up the area of a shape.

Temperature

Celsius and Fahrenheit with a thermometer that changes colour as it warms up.

For schools

Ready for the classroom, with ClassKit

Numbers supports ClassKit, so it works with Apple’s Schoolwork app. Teachers assign activities, students jump straight in, and progress comes back to the teacher, while the app itself collects no data.

Schoolwork and ClassKit

Assign Numbers activities as Schoolwork handouts. Students tap the handout and land in the right place, and their time and progress show up in Schoolwork.

Volume purchase

Buy licences in bulk in Apple School Manager under Apps and Books, assign them to iPads or Managed Apple Accounts with your MDM, and reclaim them at the end of the year.

Safe by design

No accounts, ads, in-app purchases, analytics or third-party SDKs, and no internet needed. Built to meet COPPA, GDPR rules for children and the Google Play Families Policy.

Whole-class teaching

Big, high-contrast cards read from the back of the room. Mirror an iPad to the board, build a number together, then hand out the same activity in Schoolwork.

Mixed device fleets

The same 20 modes on iPad and iPhone, on Android tablets through Google Play, and through the Amazon Appstore.

Grades K to 6

From counting and place value to percentages and unit conversions, with modes that line up with Common Core standards (see below).

Get Numbers for your school

  1. Sign in to Apple School Manager and open Apps and Books.
  2. Search for Numbers: Place Value Chart, choose a location and enter the number of licences.
  3. Assign the licences to devices or Managed Apple Accounts in your MDM, such as Jamf School, Mosyle or Intune.
  4. To see progress in Schoolwork, turn on Student Progress in Apple School Manager.

Running Android tablets, or need an invoice or a quote for a district? Email us about Numbers for schools.

Curriculum

What it covers, by grade

How each mode lines up with the Common Core State Standards for Mathematics. Use it to pick the right mode for a lesson or a Schoolwork handout.

TopicModeGradeCommon Core
Place value to 1,000 and expanded formWhole Numbers22.NBT.A.1, 2.NBT.A.3
Multi-digit numbers in numerals, words and expanded formWhole Numbers44.NBT.A.2
Comparing numbers with >, = and <Compare1–41.NBT.B.3, 2.NBT.A.4
Adding and subtractingAdd & Subtract1–32.NBT.B.5, 3.NBT.A.2
Rounding to the nearest 10, 100 or 1000Rounding3–43.NBT.A.1, 4.NBT.A.3
Multiplication facts to 12 × 12, arrays and skip countingMultiplication33.OA.A.1, 3.OA.C.7
Division as the inverse of multiplicationDivision33.OA.A.2, 3.OA.B.6
Prime and composite numbersPrimes44.OA.B.4
Fractions and equivalent fractionsFractions3–43.NF.A.3, 4.NF.A.1
Mixed numbers and improper fractionsMixed Fractions4–54.NF.B.3
Decimals to thousandthsDecimals4–54.NF.C.6, 5.NBT.A.3
Percent of a quantityPercentages66.RP.A.3
Telling time to the nearest five minutesTime22.MD.C.7
Elapsed timeElapsed Time33.MD.A.1
Counting money in coins and notesMoney22.MD.C.8
Area from length and widthArea33.MD.C.7
Converting units of length, mass and volumeLength, Weight, Water Volume4–54.MD.A.1, 5.MD.A.1
Roman numerals to 1000Roman NumeralsUK Years 4–5—
Celsius and FahrenheitTemperatureEnrichment—

Standards are listed as a planning guide. Numbers is an independent app and is not endorsed by the Common Core State Standards Initiative.

Screens

Big, bright and easy to read

Whole Numbers mode showing 3,482,957 as seven colour-coded cards from millions to ones, with the expanded form below
Whole numbers
Money mode counting 2 dollars, 3 quarters, 1 dime, 2 nickels and 4 pennies to a total of $2.99
Money
Percent mode showing 75% of 80 equals 60, with a bar filled to 75 percent
Percentages
Temperature mode converting 100 degrees Celsius to 212 degrees Fahrenheit beside a red thermometer
Temperature
Times mode showing 7 times 8 equals 56 with a dot array and skip counting by sevens
Multiplication
Fractions mode showing three fourths as a fraction, 0.75, 75 percent, its name, a fraction circle and an equivalent fraction
Fractions
Roman Numerals mode breaking 1987 into M, CM, LXXX and VII
Roman numerals

Made for small hands

Learning that feels like play

Split-flap cards

Every card flips like an old station board, so each change is something children can see and feel happen.

Simple gestures

Swipe up or down to change a value, tap to add one, double-tap to take one away. No menus to get lost in.

Listen button

One tap reads the current cards aloud, for auditory learners and for children who are still learning to read.

Challenge Mode

Hide the answers in any mode, have a think, then tap to reveal. Practice and checking in one place.

Details

Get Numbers

iPhone and iPad
App Store, $2.99
Android
Google Play, $2.99
Amazon
Amazon Appstore, $3.99
Category
Education
Age rating
4+
Grades
K to 6
Schools
ClassKit, Apple School Manager
In-app purchases
None
Internet
Not required
Version
1.8
Developer
Anand Raj R

Data not collected

No accounts, no ads, no analytics and no third-party SDKs. Your child's progress never leaves the device.

Read the privacy policy

Questions

Parents and teachers ask

What is a place value chart?

A place value chart shows each digit of a number in its own column: ones, tens, hundreds, thousands and so on. In Numbers every column is a colour-coded card, so children can change one digit and see the value of the whole number, its expanded form and its name change with it.

Does Numbers work with Schoolwork and ClassKit?

Yes. Numbers supports ClassKit, so on school iPads with Managed Apple Accounts teachers can assign Numbers activities as Schoolwork handouts, students open straight into them, and their progress appears in Schoolwork for the teacher. This needs Student Progress turned on in Apple School Manager.

Can schools buy Numbers in bulk?

Yes. Schools can buy licences in volume in Apple School Manager under Apps and Books, then assign them to iPads or Managed Apple Accounts with their device management (MDM) system and reclaim them later. For Android fleets, or for questions about larger purchases, email anandrajramamoorthy@gmail.com.

Does Numbers collect any student data?

No. Numbers has no accounts, ads, analytics or third-party SDKs and does not need the internet. The developer never receives any student data. When ClassKit is used, progress is shared only with the school through Apple’s Schoolwork app.

What grades is Numbers for?

Numbers is rated 4+ and covers topics from kindergarten and grade 1 through grade 6, including place value, the four operations, primes, fractions, decimals, percentages, money, time, area and measurement conversions.

Which math standards does Numbers cover?

Its modes line up with Common Core State Standards for Mathematics such as 2.NBT.A.1 and 4.NBT.A.2 (place value and expanded form), 3.OA.C.7 (multiplication facts), 4.OA.B.4 (prime and composite numbers), 4.NF.A.1 (equivalent fractions), 5.NBT.A.3 (decimals to thousandths), 2.MD.C.7 (time) and 3.MD.C.7 (area).

Is Numbers available on Android?

Yes. Numbers is $2.99 on the App Store for iPhone and iPad, $2.99 on Google Play for Android, and $3.99 on the Amazon Appstore. It is a one-time purchase with no in-app purchases.

Does Numbers work offline?

Yes. Every mode works without an internet connection, which makes it suitable for classrooms with limited Wi-Fi and for shared devices.

Ready, set, count