Best Decimal Rounding Apps

187+ iOS apps curated and reviewed

4.0 avg rating
16 free apps
Updated May 2026

Out of 187+ decimal rounding apps on iOS, 16 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Top Picks for Decimal Rounding

Rounding-#1

Rounding- by Horizon Business, Inc.

Editor's Choice
πŸ“š Education
4.0(79 ratings)
FreeAdsIn-App Purchases
Rounding- screenshot 1
Rounding- screenshot 2
Rounding- screenshot 3
Rounding- screenshot 4
Rounding- screenshot 5
Rounding- screenshot 6

Practice rounding numbers with whole numbers and decimals. Adjust difficulty and place values in settings to master the game. This app makes learning math fun and engaging.

Math Rounding Calculator#2

Math Rounding Calculator by Muhammad Awais Younas

Round Numbers Easily
Strong Contender
πŸ”§ Utilities
5.0(2 ratings)
FreeAds
Math Rounding Calculator screenshot 1
Math Rounding Calculator screenshot 2
Math Rounding Calculator screenshot 3
Math Rounding Calculator screenshot 4

Easily round numbers to the nearest integer or a specified number of decimal places. Offers options to round up or down, making it suitable for students and professionals needing quick, accurate calculations for various real-world applications.

Rounding Calculator#3

Rounding Calculator by talha rehman

Rounding Numbers Calculator.
Worth Considering
πŸ“š Education
4.6(7 ratings)
FreeAdsIn-App Purchases
Rounding Calculator screenshot 1
Rounding Calculator screenshot 2
Rounding Calculator screenshot 3

Easily round large or decimal numbers to the nearest whole number or specified value. This app simplifies complex calculations with a smooth interface, saving you time on math problems.

More Decimal Rounding apps to explore

4
Fraction Calculator Plus #1
Fraction Calculator Plus #1
Fraction Calculator Plus #1
Decimal to Fractions Converter
Free

Easily perform fraction calculations including addition, subtraction, multiplication, and division. Convert fractions to decimals and vice versa with a clear, user-friendly interface. Ideal for students, cooks, and DIYers needing quick and accurate fraction management.

Add, subtract, multiply, and divide fractionsConvert fractions to decimalsAutomatically simplifies fractions
πŸ“Š Productivity
(22K)
free with in-app purchases
5
Tiny Human Rounding
Tiny Human Rounding
Tiny Human Rounding
Decimal and Whole #s 0 - 9,999
$0.99

Practice rounding numbers with five distinct levels, from nearest ones to thousands. Offers optional number line support for differentiated learning. Tracks games played and mistakes made for targeted practice.

Five rounding levelsRound to nearest one, ten, hundred, thousandRound to nearest whole number
πŸ“š Education
(3)
paid
6
Fraction Calculator
Fraction Calculator
Fraction Calculator
Decimal Plus Units Converter
Free

This tool converts between decimals and fractions, and also handles unit conversions for construction and metric measurements. It offers an intuitive interface for calculations and editing, with advanced features available through upgrades.

Decimal to fraction conversionFraction to decimal conversionUnit conversion (feet, inches, metric)
πŸ“Š Productivity
(90)
free with in-app purchases
7
Bill Splitter - Pay Tip for Waiter and Waitress
Bill Splitter - Pay Tip for Waiter and Waitress
Bill Splitter - Pay Tip for Waiter and Waitress
by Nattapon Kittisuphat
Free

Easily divide restaurant bills and calculate tips with friends and family. This tool simplifies splitting costs and determining individual payment amounts, supporting international currencies and decimal rounding.

Bill splittingTip calculation with percentageInternational currency support
πŸ” Food & Drink
(2)
free
8
Rounding Numbers School
Rounding Numbers School
Rounding Numbers School
by Horizon Business, Inc.
$4.99

Practice and test your skills in rounding numbers with this educational app. It offers various modes and options to help you master rounding decimals, whole numbers, and more place values. Play until you achieve mastery.

Rounding decimalsRounding whole numbersMultiple place values
πŸ“š Education
(1)
paid
9
Math Rescue: 7-9 Year Old Game
Math Rescue: 7-9 Year Old Game
Math Rescue: 7-9 Year Old Game
Boys & Girl Educational Games
Free

This educational game makes learning about rounding and estimation fun for children. Players help a fireman save a forest by using the correct amount of water balloons to put out fires, practicing essential math skills through engaging gameplay.

Practice rounding to nearest 10s and 100sEstimate sums of two and three-digit numbersLearn place value concepts
πŸ“š Education
(2.4K)
free with in-app purchases
10
Binary Decimal Converter
Binary Decimal Converter
Binary Decimal Converter
by Satish Boggarapu
Free

Easily convert numbers between Binary, Decimal, Hexadecimal, and Octal formats. This educational tool is designed for quick and accurate number system conversions.

Binary conversionDecimal conversionHexadecimal conversion
πŸ“š Education
(68)
free with in-app purchases
11
Decimals to Fractions
Decimals to Fractions
Decimals to Fractions
Convert Decimals to Fractions
$1.99

Easily convert between decimal and fraction formats with this offline tool. It offers a clean interface for quick calculations and includes a bonus percent calculator accessible via a short ad.

Two-way decimal/fraction conversionOffline functionalityClean and simple interface
πŸ“š Education
(11)
ad-supported
12
iFraction Calculator
iFraction Calculator
iFraction Calculator
Calculator for fraction number
Free

This application simplifies fraction calculations for students, professionals, and anyone needing to work with fractions. It offers step-by-step explanations for equations and can handle both decimal and fraction inputs, converting between the two. The app supports large numbers and saves previous calculations for easy review.

Fraction math computation (add, subtract, multiply, divide)Step-by-step equation explanationDecimal and fraction calculation
πŸ“Š Productivity
(1.6K)
free with in-app purchases
13
Number Line
Number Line
Number Line
by Todd Bowden
Free

This educational game helps students master fractions, decimals, and percents. Players order equivalent values on a number line by dragging and dropping circles. It offers multiple levels and scores based on speed and accuracy.

Order fractions, decimals, and percentsInteractive number line gameplayMultiple difficulty levels
πŸ“š Education
(665)
free
14
Fraction Basics & Decimals
Fraction Basics & Decimals
Fraction Basics & Decimals
Zapzapmath Home Math Fractions
Free

This app uses animated videos to teach fundamental fraction concepts. It covers understanding fractions, improper and mixed fractions, equivalent fractions, and operations like addition, subtraction, multiplication, and division. It also includes lessons on converting fractions to percentages and decimals to fractions.

Animated video lessonsUnderstanding fractionsImproper and mixed fractions
πŸ“š Education
(10)
free with in-app purchases
15
Decimal (.)
Decimal (.)
Decimal (.)
Decimal Converter
$0.99
πŸ”§ Utilities
(0)
16
Decimal Time Converter
Decimal Time Converter
Decimal Time Converter
by CodeBurners
Free

This utility quickly converts time between hours and minutes and decimal formats. Its intuitive interface uses slot machine-style spinners for instant, effortless conversion without needing to press submit.

Hours and minutes to decimal conversionDecimal to hours and minutes conversionInstant conversion display
πŸ”§ Utilities
(4)
free
17
Fraction Calculator + Decimals
Fraction Calculator + Decimals
Fraction Calculator + Decimals
Includes Decimals to Fractions
Free

This app simplifies fraction calculations, offering conversions between fractions and decimals. It supports various fraction types and includes visual learning resources for homework help. Unlock advanced features through in-app purchases or a subscription.

Fraction to decimal conversionDecimal to fraction conversionFraction simplification
πŸ“Š Productivity
(293)
free with in-app purchases
18
Binary to Decimal to Hexadecimal Converter
Binary to Decimal to Hexadecimal Converter
Binary to Decimal to Hexadecimal Converter
by Aldiyar Ablyazov
Free

This application facilitates quick and straightforward conversions between binary, decimal, and hexadecimal number systems. It offers a user-friendly interface with minimalist graphics and vivid colors, providing instant and accurate results for all number sizes. It's designed for users of all ages needing assistance with number base conversions.

Binary to Decimal conversionDecimal to Binary conversionBinary to Hexadecimal conversion
πŸ“š Education
(10)
free
19
Fraction Calculator-Decimal RA
Fraction Calculator-Decimal RA
Fraction Calculator-Decimal RA
Fraction Calculator & Tutor
Free

This tool performs all basic fraction operations, converts to decimals, and compares fractions. It offers a practice mode with a "wrong answer book" for targeted learning and is available in multiple languages.

Basic fraction operationsDecimal conversionFraction comparison
πŸ”§ Utilities
(13)
ad-supported
20
Fraction Help
Fraction Help
Fraction Help
Calculator + Working
Free

This app simplifies fraction calculations and learning. It solves various fraction equations, shows detailed steps for understanding, and converts between decimals and fractions. It also helps find factors of numbers.

Solve fraction equations (add, subtract, multiply, divide)View detailed working for solutionsWork with mixed/partial fractions
πŸ”§ Utilities
(199)
free with in-app purchases