Best Decimal System Apps

202+ iOS apps curated and reviewed

4.0 avg rating
14 free apps
Updated June 2026

Looking for free decimal system apps? 14 of our 202+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Top Picks for Decimal System

More Decimal System apps to explore

4
Fraction Calculator + Decimals
Fraction Calculator + Decimals
Fraction Calculator + Decimals
Includes Decimals to Fractions
Free

Introducing a versatile Fraction Calculator app with features like reducing fractions, converting decimals to fractions, and more. Simplify everyday math problems with ease and precision. Check it out at www.zapzapmath.com for a seamless math experience.

📊 Productivity
(293)
5
Fraction Calculator
Fraction Calculator
Fraction Calculator
Decimal Plus Units Converter
Free

This ad-free fraction calculator offers an award-winning tool for accurately performing calculations involving feet, inches, and fractions. Simplify your math tasks with precision and efficiency.

📊 Productivity
(90)
6
Fraction Calculator Plus #1
Fraction Calculator Plus #1
Fraction Calculator Plus #1
Decimal to Fractions Converter
Free

This application is a powerful tool for calculating fractions with ease, providing users with a handy way to perform fraction-related calculations quickly and efficiently. Simplify your math tasks and crunch numbers effortlessly with this handy fraction calculator app.

📊 Productivity
(22K)
7
Hex to Decimal Converter
Hex to Decimal Converter
Hex to Decimal Converter
quick conversion tool
Free

This handy conversion tool allows you to easily convert hexadecimal numbers to decimal or binary and vice versa, displaying results in real-time as you type. Simply enter your number, click on the result, and it will be copied to your clipboard for convenience.

🔧 Utilities
(8)
8
Decimal to Fraction Math Facts
Decimal to Fraction Math Facts
Decimal to Fraction Math Facts
Convert Decimals to Fractions
$6.99

An app that effortlessly converts decimals to fractions, with adaptive learning to enhance efficiency and mastery of decimal and fraction calculations. Improve your math skills in just a few minutes each day and always have a fraction calculator brain at your disposal.

📚 Education
(8)
9
Fraction Basics & Decimals
Fraction Basics & Decimals
Fraction Basics & Decimals
Zapzapmath Home Math Fractions
Free

This video app teaches core concepts of fractions through 12 animated videos, covering topics from understanding fractions to converting fractions to decimals and percents. Unlock all video content with an All Access Pass and build a strong foundation in fractions, exploring topics like equivalent fractions, adding and subtracting fractions, and more.

📚 Education
(10)
10
Fraction Calculator-Decimal RA
Fraction Calculator-Decimal RA
Fraction Calculator-Decimal RA
Fraction Calculator & Tutor
Free
🔧 Utilities
(13)
11
Binary to Decimal to Hexadecimal Converter
Binary to Decimal to Hexadecimal Converter
Binary to Decimal to Hexadecimal Converter
by Aldiyar Ablyazov
Free
📚 Education
(10)
12
Third Grade Learning Games
Third Grade Learning Games
Third Grade Learning Games
Math & Reading App for Kids
Free

Discover a fun and engaging way for third graders to enhance their math skills through interactive learning games. Spark their interest and boost their knowledge with our educational app – play, learn, and excel in math!

📚 Education
(17K)
13
Decimal Time Converter
Decimal Time Converter
Decimal Time Converter
by CodeBurners
Free

This application quickly and easily converts hours and minutes to decimals, and vice versa, using a simple and intuitive interface with slot machine style spinners. It's perfect for anyone who needs to bill for their time or make instant conversions, allowing users to input values in various formats and see results displayed instantly.

🔧 Utilities
(4)
14
Decimal to Percent Converter
Decimal to Percent Converter
Decimal to Percent Converter
Part of CalCon Calculator
Free
🔧 Utilities
(0)
15
Decimal To Fraction Converter
Decimal To Fraction Converter
Decimal To Fraction Converter
by Manfred Breede
$0.99

This app converts decimal numbers to fractions and vice versa, making it easy to switch between the two formats. Try it out to simplify your decimal and fraction conversions.

💼 Business
(5)
16
Decimal Fractions
Decimal Fractions
Decimal Fractions
by zhandos uakanov
$0.99
🔍 Reference
(0)
17
Decimals to Fractions
Decimals to Fractions
Decimals to Fractions
Convert Decimals to Fractions
$1.99

This application quickly and accurately converts decimals to fractions and vice versa, with a simple and easy-to-use interface. It also offers a percent calculator feature and works offline, allowing users to perform calculations without an internet connection.

📚 Education
(11)
18
Conversion Calculator !
Conversion Calculator !
Conversion Calculator !
Currency, Temperature, Length
Free

Easily convert units of measurement with this user-friendly app. Say goodbye to complex calculations and simplify your unit conversions today!

✈️ Travel
(13K)
19
iFraction Calculator
iFraction Calculator
iFraction Calculator
Calculator for fraction number
Free

iFraction is a powerful fraction calculator app that helps with everyday fraction math problems, featuring step-by-step equation explanations, decimal and fraction calculations, large number support, and previous calculation storage. Ideal for students, woodworkers, constructors, and anyone needing fast and accurate fraction calculations on their Apple devices. Turn your iPhone, iPod, or iPad into a versatile calculator with iFraction.

📊 Productivity
(1.6K)
20
Decimal To Fraction Plus
Decimal To Fraction Plus
Decimal To Fraction Plus
by Manfred Breede
$1.99

This app converts decimals to fractions and vice versa, handling both terminating and repeating decimals, making it a useful tool for mathematical calculations. Try it out to easily switch between decimal and fraction representations.

💼 Business
(2)