Best Decimal Apps & Games

195+ iOS apps & games curated and reviewed

4.0 avg rating
15 free apps & games
Updated May 2026

Out of 195+ decimal apps on iOS, 15 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

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 math with a powerful graphing calculator application that allows you to plot various equations, use sliders for interactive adjustments, create tables for data input, analyze statistics, and more. Visit the website to access the free browser version and enhance your mathematical skills today.

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
Decibel X:dB Sound Level Meter#2

Decibel X:dB Sound Level Meter by SkyPaw Co., Limited

Frequency Spectrum Analyzer
Strong Contender
🔧 Utilities
4.7😐(156K ratings)
FreeIn-App Purchases
Decibel X:dB Sound Level Meter screenshot 1
Decibel X:dB Sound Level Meter screenshot 2
Decibel X:dB Sound Level Meter screenshot 3
Decibel X:dB Sound Level Meter screenshot 4
Decibel X:dB Sound Level Meter screenshot 5
Decibel X:dB Sound Level Meter screenshot 6

Transform your iOS device into a professional sound level meter with pre-calibrated accuracy and various frequency spectrum analysis tools. Measure sound pressure levels, export data to Health app, and enjoy features like FFT graphs, dosimeter readings, and InstaDecibel for social sharing. Experience the convenience of tracking noise levels with precision and ease.

What We Love

  • ⭐ Excellent app
  • 👍 Easy to use and understand
  • 🔍 Useful for various applications
  • 🎓 Helpful for hearing protection

Room to Improve

  • 💰 Expensive subscription model
  • 🔒 Misleading free trial
  • 📢 Intrusive ads
Desmos Scientific Calculator#3

Desmos Scientific Calculator by Desmos, Inc.

Worth Considering
📚 Education
4.3(327 ratings)
Free
Desmos Scientific Calculator screenshot 1
Desmos Scientific Calculator screenshot 2
Desmos Scientific Calculator screenshot 3

Explore a powerful scientific calculator with functions beyond basic arithmetic - trigonometry, statistics, and combinatorics. Create and evaluate custom functions, work offline, view multiple expressions at once, and enjoy a seamless user experience - all for free.

More Decimal apps to explore

4
Fraction Calculator-Decimal RA
Fraction Calculator-Decimal RA
Fraction Calculator-Decimal RA
Fraction Calculator & Tutor
Free
🔧 Utilities
(13)
5
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)
6
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)
7
Binary Decimal Converter
Binary Decimal Converter
Binary Decimal Converter
by Satish Boggarapu
Free

This application allows users to easily convert numbers between Binary, Decimal, Hexadecimal, and Octal number systems. Download now and start converting numbers with just a few taps!

📚 Education
(68)
8
Decimal (.)
Decimal (.)
Decimal (.)
Decimal Converter
Free
$0.99 | 100% OFF
🔧 Utilities
(0)
9
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)
10
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)
11
Symbolab - AI Math Solver App
Symbolab - AI Math Solver App
Symbolab - AI Math Solver App
Calculator & Photo Solver
Free

An AI math calculator app that simplifies math problem-solving from pre-algebra to calculus, by providing step-by-step solutions. Say goodbye to math struggles and solve problems with confidence today!

📚 Education
(26K)
12
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)
13
Binary to Decimal to Hexadecimal Converter
Binary to Decimal to Hexadecimal Converter
Binary to Decimal to Hexadecimal Converter
by Aldiyar Ablyazov
Free
📚 Education
(10)
14
Decimal Fractions
Decimal Fractions
Decimal Fractions
by zhandos uakanov
$0.99
🔍 Reference
(0)
15
Fractions/Decimals/Fractions
Fractions/Decimals/Fractions
Fractions/Decimals/Fractions
by Essence Computing
$0.99

This application helps users convert fractions to decimals and vice versa, providing step-by-step explanations for each calculation. It can handle recurring decimals and offers a user-friendly interface to input values and obtain results, making it easy to understand and learn the conversion process.

📚 Education
(4)
16
Decimator
Decimator
Decimator
by Kosada Incorporated
Free

Look up Dewey Decimal numbers quickly and easily with this handy tool, which allows browsing and searching in 10 languages without requiring an internet connection. Try it now to efficiently find the Dewey Decimal numbers you need.

🛍️ Shopping
(3)
17
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)
18
Decimals & Fractions
Decimals & Fractions
Decimals & Fractions
Learn maths with decimals
$4.99
📚 Education
(0)
19
Fractions to decimals games for kids 3rd graders math ideas
Fractions to decimals games for kids 3rd graders math ideas
Fractions to decimals games for kids 3rd graders math ideas
by Prathed Sangwongvanit
Free

Improve kids' skills with free, fun math practice, converting fractions to decimals and more. Engage your child in interactive games and activities to master 3rd-grade math concepts.

🎮 Games
(1)
20
DecimalFire
DecimalFire
DecimalFire
by DECIMAL - INFORMATICA E GESTAO, LDA
Free
💼 Business
(0)

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