Best Decimals Apps

196+ iOS apps curated and reviewed

3.9 avg rating
13 free apps
Updated July 2026

The best decimals apps on iPhone average 3.9★ across 196+ titles — we've ranked them by what real users actually keep on their phones. Updated July 2026.

Compare top Decimals Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Desmos Graphing CalculatorDesmos Graphing CalculatorFree4.3★ (1.3K)NoNoJul 2026
2Desmos Scientific CalculatorDesmos Scientific CalculatorFree4.3★ (327)NoNoJul 2026
3Decimals to FractionsDecimals to Fractions$1.994.9★ (11)YesNoJul 2026
4Fraction Calculator-Decimal RAFraction Calculator-Decimal RAFree4.1★ (13)YesNoMay 2026
5Fraction Basics & DecimalsFraction Basics & DecimalsFree2.6★ (10)NoYesMay 2026
6Fraction Calculator + DecimalsFraction Calculator + DecimalsFree3.7★ (293)NoYesJul 2026
7[ Matrix Calculator ][ Matrix Calculator ]Free1.0★ (4)YesYesMay 2026
8Decimal to Fraction Math FactsDecimal to Fraction Math Facts$6.995.0★ (8)NoNoJul 2026

Top Picks for Decimals

Desmos Graphing Calculator#1

Desmos Graphing Calculator by Desmos, Inc.

Editor's Choice
📚 Education
4.3😊(1.3K ratings)
Free
Desmos Graphing Calculator screenshot 1
Desmos Graphing Calculator screenshot 2
Desmos Graphing Calculator screenshot 3
Desmos Graphing Calculator screenshot 4
Desmos Graphing Calculator screenshot 5
Desmos Graphing Calculator screenshot 6

Explore mathematical concepts by graphing any equation, from simple lines to complex series. This powerful tool allows for interactive exploration with sliders, data tables, and animations. It also includes a scientific calculator and supports inequalities and accessibility features.

What We Love

  • 🚀 Insane tool for FREE!
  • 🚀 Best mobile graphing app
  • 👍 Awesome for algebra and calculus
  • 👍 Genuinely an awesome resource

Room to Improve

  • 🐛 Crashes and bugs
  • 🐛 Glitches with certain features
  • 🐛 Loses saved data
Desmos Scientific Calculator#2

Desmos Scientific Calculator by Desmos, Inc.

Strong Contender
📚 Education
4.3(327 ratings)
Free
Desmos Scientific Calculator screenshot 1
Desmos Scientific Calculator screenshot 2
Desmos Scientific Calculator screenshot 3

This app offers a powerful scientific calculator with a wide range of functions for trigonometry, statistics, and combinatorics. Users can define and evaluate their own functions, assign values to variables, and view multiple expressions simultaneously. It works offline and is completely free to use.

Decimals to Fractions#3

Decimals to Fractions by JanoGroup LLC

Convert Decimals to Fractions
Worth Considering
📚 Education
4.9(11 ratings)
$1.99Ads
Decimals to Fractions screenshot 1
Decimals to Fractions screenshot 2
Decimals to Fractions screenshot 3

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.

More Decimals apps to explore

4
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
5
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
📚 Education
(10)
free with in-app purchases
6
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
7
[ Matrix Calculator ]
[ Matrix Calculator ]
[ Matrix Calculator ]
Determinant, multiply and more
Free

Easily create and manipulate matrices with an intuitive interface. Features a unique transparent screen mode to simplify data entry from physical sources, making complex calculations feel as simple as using a basic calculator.

Intuitive matrix creationSwipe or button cell additionTransparent screen input mode
🔧 Utilities
(4)
free with in-app purchases
8
Decimal to Fraction Math Facts
Decimal to Fraction Math Facts
Decimal to Fraction Math Facts
Convert Decimals to Fractions
$6.99

Master the conversion between decimals, fractions, and percentages with this adaptive learning app. It offers a fun and frustration-free way to build number sense and fluency in mathematical concepts essential for various fields.

Decimal to Fraction conversionFraction to Decimal conversionFraction to Percent conversion
📚 Education
(8)
paid
9
6th Grade Practice Percent,Fractions and Decimals
6th Grade Practice Percent,Fractions and Decimals
6th Grade Practice Percent,Fractions and Decimals
חשבון לכיתה ו
Free

Practice decimal fractions, fractions, and percentages with this educational app. It covers various topics including conversions between decimals, fractions, and percentages, as well as arithmetic operations on fractions and decimals.

Decimal/fraction to percent conversionFraction identificationPercentage questions
📚 Education
(1)
free
10
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
📊 Productivity
(22K)
free with in-app purchases
11
RTHA
RTHA
RTHA
Rotterdam The Hague Airport
Free
✈️ Travel
(0)
12
Decimals & Fractions
Decimals & Fractions
Decimals & Fractions
Learn maths with decimals
$4.99
📚 Education
(0)
13
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
14
PocketCAS lite for Mathematics
PocketCAS lite for Mathematics
PocketCAS lite for Mathematics
Helps with Calculus + Algebra
Free

This advanced math application assists with a wide range of mathematical problems, from basic arithmetic to calculus, algebra, and statistics. It functions as a graphing calculator replacement, aids in homework, and supports complex calculations for academic and professional use.

2D and 3D plottingCalculus functions (limits, derivatives)Linear algebra operations
📚 Education
(188)
free
15
Fexco 2026
Fexco 2026
Fexco 2026
by Todotix SRL
Free

This app is your official guide to a major regional trade fair. Discover events, plan your visit with an interactive agenda, and securely purchase tickets. Navigate the venue with an interactive map and explore exhibitor details.

Event discovery and filteringInteractive daily agendaSecure ticket purchasing
🎬 Entertainment
(1)
free
16
Fractions/Decimals/Fractions
Fractions/Decimals/Fractions
Fractions/Decimals/Fractions
by Essence Computing
$0.99

This app helps users convert fractions to decimals and vice versa, providing detailed step-by-step explanations for each calculation. It can handle recurring decimals and negative fractions, making complex conversions understandable.

Fraction to decimal conversionDecimal to fraction conversionHandles recurring decimals
📚 Education
(4)
paid
17
Decimal (.)
Decimal (.)
Decimal (.)
Decimal Converter
$0.99
🔧 Utilities
(0)
18
Fractions & Decimals
Fractions & Decimals
Fractions & Decimals
by TicTapTech, LLC
$0.99

Practice a variety of fraction and decimal concepts through engaging activities. Learn to name, order, and convert between fractions and decimals with multiple choice and matching games.

Naming fractionsEquivalent fractionsOrdering fractions
📚 Education
(3)
paid
19
Decimal to Percent Converter
Decimal to Percent Converter
Decimal to Percent Converter
Part of CalCon Calculator
Free
🔧 Utilities
(0)
20
Decimal To Fraction Plus
Decimal To Fraction Plus
Decimal To Fraction Plus
by Manfred Breede
$1.99

Convert terminating and repeating decimals to fractions, and fractions to decimals. This tool simplifies mathematical conversions for users needing precise fractional representations.

Decimal to fraction conversionFraction to decimal conversionHandles terminating decimals
💼 Business
(2)
paid

FAQ about Decimals

What are the best decimals apps for iPhone?
Desmos Graphing Calculator tops our decimals apps ranking as of July 2026, with a 4.3-star average from 1.3K App Store ratings, and it's free to download.
Yes — 13 of the top decimals apps we rank are free to download, including Desmos Graphing Calculator and Desmos Scientific Calculator.
Desmos Graphing Calculator has no ads and has no in-app purchases, according to its App Store listing as of July 2026.
We track 196+ decimals apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
You can graph any equation, including lines, parabolas, derivatives, and Fourier series. The app allows you to add sliders to demonstrate function transformations, create tables to input and plot data, and animate your graphs. It also functions as a scientific calculator and can plot inequalities.
You can graph polar, cartesian, or parametric equations. There is no limit to the number of expressions you can graph simultaneously, and you do not need to enter expressions in the standard y= form.

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