Best Decimal Rounding App

182+ iOS apps curated and reviewed

4.2 avg rating
16 free apps
Updated June 2026

If you already know Rounding, this is the deeper bench. 182+ decimal rounding app for iPhone, all reviewed and ranked by user rating, recency, and download trend as of June 2026.

Compare top Decimal Rounding App (June 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Rounding-Rounding-Free4.0★ (79)YesYesMay 2026
2Fraction Calculator Plus #1Fraction Calculator Plus #1Free4.9★ (22K)YesYesAug 2026
3Rounding CalculatorRounding CalculatorFree4.6★ (7)YesYesMay 2026
4Fraction Calculator + DecimalsFraction Calculator + DecimalsFree3.7★ (293)NoYesJul 2026
5Fraction CalculatorFraction CalculatorFree4.7★ (90)NoYesJul 2026
6Number LineNumber LineFree3.0★ (665)NoNoJul 2026
7Rounding Numbers SchoolRounding Numbers School$4.995.0★ (1)YesNoMay 2026
8Tiny Human RoundingTiny Human Rounding$0.991.0★ (3)NoNoMay 2026

Top Picks for Decimal Rounding App

Rounding-#1

Rounding- by Horizon Business, Inc.

Editor's Choice
📚 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.

Fraction Calculator Plus #1#2

Fraction Calculator Plus #1 by DigitAlchemy LLC

Decimal Converter,Construction
Strong Contender
📊 Productivity
4.9😊(22K ratings)
FreeAdsIn-App Purchases
Fraction Calculator Plus #1 screenshot 1
Fraction Calculator Plus #1 screenshot 2
Fraction Calculator Plus #1 screenshot 3
Fraction Calculator Plus #1 screenshot 4
Fraction Calculator Plus #1 screenshot 5
Fraction Calculator Plus #1 screenshot 6

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.

What We Love

  • 👍 Simple, easy to use
  • 👍 Super app
  • 👍 Awesome calculator
  • 👍 Intuitive design

Room to Improve

  • 🐛 Intrusive ads
  • 🐛 Subscription required for pro features
Rounding Calculator#3

Rounding Calculator by talha rehman

Rounding Numbers Calculator.
Worth Considering
📚 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 App apps to explore

4
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
📊 Productivity
(293)
free with in-app purchases
5
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)
📊 Productivity
(90)
free with in-app purchases
6
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
📚 Education
(665)
free
7
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
📚 Education
(1)
paid
8
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
📚 Education
(3)
paid
9
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
📚 Education
(10)
free
10
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
🔧 Utilities
(13)
ad-supported
11
Calculator +
Calculator +
Calculator +
Scientific Calc Plus Fraction
Free

This app offers a free basic and scientific calculator with an intuitive interface. It supports fractions, percentages, and advanced editing. Optional upgrades provide specialized calculators for fractions with units, polynomial and linear equation solving, graphing, and geometric shapes.

Free basic and scientific calculatorIntuitive interface with equation and result displayFraction and percent support
🔧 Utilities
(9.6K)
free with in-app purchases
12
Math Rounding Calculator
Math Rounding Calculator
Math Rounding Calculator
Round Numbers Easily
Free

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.

Round whole numbers to nearest integer, 10, 100, or 1000Round decimals to 1-9 placesRound up and down options
🔧 Utilities
(2)
ad-supported
13
Decimal (.)
Decimal (.)
Decimal (.)
Decimal Converter
$0.99
🔧 Utilities
(0)
14
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
📚 Education
(2.5K)
free with in-app purchases
15
Kalkulilo (Calculator)
Kalkulilo (Calculator)
Kalkulilo (Calculator)
by Alexander Clauss
$2.99

This app offers a versatile calculator with multiple modes, including scientific, bitwise, statistical, trigonometric, base conversion, and time calculations. It features a simple mode with large buttons and customizable interface. Widgets for notification center and Apple Watch are also included.

Scientific calculator functionsBit/integer mode with logical operationsStatistical calculations
📊 Productivity
(29)
free with in-app purchases
16
Fractions Converter & Calc
Fractions Converter & Calc
Fractions Converter & Calc
Convert Fractions with ease
Free

Easily convert between fractions and decimals with this straightforward calculator. It offers multiple conversion options and fraction simplification tools. Get precise results for your mathematical needs.

Decimal to fraction conversionFraction to decimal conversionFraction reduction
💼 Business
(40)
free
17
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
📚 Education
(68)
free with in-app purchases
18
Calculator +ㅤ
Calculator +ㅤ
Calculator +ㅤ
Math, Scientific & Fraction
Free

This app simplifies math with basic, scientific, and fraction calculations. It also features a unique snap-and-scribble function to solve problems from photos. Customize your experience with themes and access a calculation history.

Snap and Scribble CalculatorBasic CalculatorScientific Calculator
🔧 Utilities
(4.5K)
subscription
19
Fraction Calculator Plus
Fraction Calculator Plus
Fraction Calculator Plus
Calculate fraction numbers
Free

Solve fraction math problems with ease using this application. It offers a clean interface and allows for the calculation of multiple fractions simultaneously. Inputting mixed numbers is also made simple with dedicated keypads.

Solve fraction math problemsInput mixed numbers easilyCalculate multiple fractions
🔧 Utilities
(3.7K)
free with in-app purchases
20
Calculator⁼
Calculator⁼
Calculator⁼
Fraction, Scientific Calc +
Free

This app offers a clean and intuitive interface for both basic arithmetic and advanced scientific calculations. It includes a history tape to review past computations and supports various mathematical operations, making it suitable for everyday use and complex problem-solving.

Basic & Scientific CalculatorLive Currency ConverterHistory Tape
🔧 Utilities
(357K)
free with in-app purchases

FAQ about Decimal Rounding App

What is the best decimal rounding app for iPhone?
Rounding- tops our decimal rounding app ranking as of June 2026, with a 4.0-star average from 79 App Store ratings, and it's free to download.
Yes — 16 of the top decimal rounding app we rank are free to download, including Rounding- and Fraction Calculator Plus #1.
Rounding- shows ads and offers in-app purchases, according to its App Store listing as of June 2026.
We track 182+ decimal rounding app on the iOS App Store as of June 2026, ranked by rating, recency, and analysis of real user reviews.
Rounding- employs a gamified approach to learning, allowing users to practice rounding skills through interactive challenges. The focus is on repetition and mastery in a fun, engaging environment.
While specific progress tracking metrics are not detailed, the app encourages users to 'Play until you master the game,' implying that continued play leads to skill improvement. Users can adjust settings to increase difficulty as they progress.