Best Flywheel Energy Calculator Apps

201+ iOS apps curated and reviewed

4.5 avg rating
16 free apps
Updated May 2026

Looking for free flywheel energy calculator apps? 16 of our 201+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Top Picks for Flywheel Energy Calculator

Scientific Calculator Plus 991#2

Scientific Calculator Plus 991 by Tran Duy

Designed for math calculator
Strong Contender
📚 Education
4.7😊(12K ratings)
FreeAdsIn-App Purchases
Scientific Calculator Plus 991 screenshot 1
Scientific Calculator Plus 991 screenshot 2
Scientific Calculator Plus 991 screenshot 3
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Scientific Calculator Plus 991 screenshot 5
Scientific Calculator Plus 991 screenshot 6

This app is a powerful scientific calculator with graphing capabilities, a formula library, and a unit converter. It offers natural display input, advanced math functions for algebra, calculus, and statistics, and supports various number bases and formats.

What We Love

  • 👍 Intuitive and easy to use
  • 🚀 Powerful and feature-rich
  • 💡 Customizable interface and settings
  • 🔍 Extensive library of formulas and equations

Room to Improve

  • 🐛 Occasional bugs and input issues
  • 🔀 Confusing layout and button placement
  • 💰 Some advanced features locked behind paywall
ClevCalc - Calculator#3

ClevCalc - Calculator by Cleveni Inc.

All-In-One Calculator
Worth Considering
📊 Productivity
4.7😊(12K ratings)
FreeAdsIn-App Purchases
ClevCalc - Calculator screenshot 1
ClevCalc - Calculator screenshot 2
ClevCalc - Calculator screenshot 3
ClevCalc - Calculator screenshot 4
ClevCalc - Calculator screenshot 5
ClevCalc - Calculator screenshot 6

This comprehensive calculator app offers a wide range of tools for everyday calculations, from basic arithmetic and scientific functions to unit and currency conversions. It includes specialized calculators for loans, health, fuel costs, GPA, and more, all within a clean and user-friendly interface.

What We Love

  • 👍 Easy to use
  • 🚀 Efficient calculations
  • 💡 Versatile features (currency, unit conversions, etc.)
  • 👍 Intuitive interface

Room to Improve

  • 💰 Subscription model too expensive
  • 🔍 Ads can be intrusive
  • 🐛 Occasional UI issues (e.g. ads blocking functionality)

More Flywheel Energy Calculator apps to explore

4
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
5
EduCalc Classic
EduCalc Classic
EduCalc Classic
by William Jockusch
Free

This app functions as a powerful graphing calculator with extensive scientific functions, unit conversion, and a built-in math and science reference. It supports graphing multiple equations, polar coordinates, and implicit functions, making it ideal for complex calculations and homework.

Scientific calculator with advanced functionsGraphing up to four equations simultaneouslyUnit converter for various physical quantities
📚 Education
(299)
free with in-app purchases
6
Conversion Calculator !
Conversion Calculator !
Conversion Calculator !
Currency, Temperature, Length
Free

Easily convert between various units of measurement, including currencies, temperature, length, and weight. This intuitive tool provides real-time currency exchange rates and a comprehensive list of conversions for everyday use.

Real-time currency conversionsExtensive unit categories (weight, temp, length, volume, etc.)Simple and intuitive interface
✈️ Travel
(13K)
free with in-app purchases
7
Sporty's E6B Flight Computer
Sporty's E6B Flight Computer
Sporty's E6B Flight Computer
Calculator for pilots
$9.99

This aviation calculator app offers 27 functions for navigation, fuel calculations, and conversions. It includes a versatile timer for tracking multiple time zones and performing countdowns with alerts. Designed for pilots, it simplifies complex flight planning and in-flight computations.

27 Aviation Functions22 Aviation ConversionsNavigational Calculations
🗺️ Navigation
(5K)
paid
8
Panecal Scientific Calculator
Panecal Scientific Calculator
Panecal Scientific Calculator
For engineers and students
Free

This app functions as a scientific calculator, enabling users to input and edit complex formulas with ease. It supports formula history, variable memory, and various number system conversions for accurate calculations.

Formula editing with cursor and swipeReuse past formulasVariable memory for calculations
🔧 Utilities
(1.9K)
ad-supported
9
Converter+ (Units, Currencies)
Converter+ (Units, Currencies)
Converter+ (Units, Currencies)
Unit and Currency Converter
Free

This app offers a comprehensive unit and currency converter with a vast array of categories and calculators for everyday needs. It allows users to customize templates, download shared ones, and provides automatic exchange rate updates for 167 world currencies.

Extensive unit and currency conversionMultiple calculators (mortgage, loan, tip)Customizable and downloadable templates
📊 Productivity
(2.3K)
free with in-app purchases
10
Gasable
Gasable
Gasable
by EASY SOLUTIONS FOR TRAFFIC AND TRANSPORTATION PROBLEMS
Free

This app connects users with a wide network of energy providers, simplifying energy procurement. It uses AI for optimized logistics and real-time tracking, supporting sustainable practices and cost savings.

Energy provider marketplaceAI-powered logisticsReal-time tracking
🔧 Utilities
(5.1K)
free with in-app purchases
11
CNC Machinist Calculator Pro
CNC Machinist Calculator Pro
CNC Machinist Calculator Pro
by Shane Anderson
$14.99

This app provides a comprehensive suite of calculators and tools for CNC machinists, engineers, and hobbyists. It offers specialized calculations for turning, milling, drilling, threading, and geometric tolerances, along with material data and G-code generation.

Turning, Milling, and Drilling CalculatorsThread and Bolt Pattern CalculatorsGeometric Tolerance (GD&T) Tools
📊 Productivity
(642)
paid
12
QuickMPG - gas mileage calculator
QuickMPG - gas mileage calculator
QuickMPG - gas mileage calculator
by Steven Romej
Free

Easily calculate your vehicle's gas mileage on a single screen. Track your fuel efficiency over time with historical data and quick comparison features. Ideal for anyone needing a straightforward way to monitor MPG.

One-screen calculationHistorical MPG dataQuick comparison of ratings
🔧 Utilities
(10)
free
13
Kinetic Energy Calculator
Kinetic Energy Calculator
Kinetic Energy Calculator
Kinetic energy made easy
Free

Calculate the kinetic energy of an object using its mass and velocity. A pro version offers additional calculations for mass and velocity based on kinetic energy.

Calculate kinetic energy from mass and velocityCalculate mass from kinetic energy and velocity (Pro)Calculate velocity from kinetic energy and mass (Pro)
🔧 Utilities
(7)
free with in-app purchases
14
CalcBox -All in One Calculator
CalcBox -All in One Calculator
CalcBox -All in One Calculator
Multipurpose calculator
Free

This app combines numerous essential calculation tools into a single, user-friendly interface. It handles everything from basic arithmetic and unit conversions to financial planning, health tracking, and academic performance. Simplify your daily tasks with this comprehensive utility.

Basic and scientific calculationsExtensive unit and currency conversionFinancial calculators (loan, deposit, tip, discount)
🔧 Utilities
(347)
free with in-app purchases
15
Electrical Calculator lite
Electrical Calculator lite
Electrical Calculator lite
60 Calculators & 16 Converters
Free

This comprehensive tool offers over 60 calculators and 16 converters for electrical engineering, wiring, and circuit analysis. It supports engineers, electricians, students, and hobbyists with calculations ranging from basic Ohm's Law to complex RLC circuits and power conversions.

60+ Electrical Calculators16 Electrical Unit ConvertersOhm's Law Calculations
🔧 Utilities
(565)
free with in-app purchases
16
All-In-One: Calculator
All-In-One: Calculator
All-In-One: Calculator
Calculator & Unit converter
Free

This app offers a comprehensive suite of over 75 calculators and unit converters, including scientific, algebraic, geometric, financial, and health-related tools. It simplifies everyday calculations and conversions with a clear design and instant results.

Over 75 free calculators and convertersScientific calculator functionsUnit and currency conversions
📊 Productivity
(14)
free with in-app purchases
17
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
(4.1K)
subscription
18
Simple Fuel Calculator (USA)
Simple Fuel Calculator (USA)
Simple Fuel Calculator (USA)
Calculates fuel usage and cost
Free

This application helps users calculate their fuel consumption and associated costs. It utilizes standard units commonly used in the USA, such as miles, dollars, and U.S. gallons.

Fuel consumption calculationCost calculationUses US standard units (miles, $, gallons)
✈️ Travel
(6)
free
19
My Physics Calculator
My Physics Calculator
My Physics Calculator
135 calculators with formulas
$2.99

This app offers a comprehensive suite of over 130 calculators for physics and engineering calculations. It provides clear formulas and definitions for each parameter, making complex calculations accessible with a simple interface.

130+ physics and engineering calculatorsIncludes formulas and definitionsSimple user interface
🔧 Utilities
(44)
paid
20
CNC Machinist Calculator Ultra
CNC Machinist Calculator Ultra
CNC Machinist Calculator Ultra
All-in-One Machining Tool
Free

This app provides machinists and engineers with a comprehensive suite of tools for CNC operations. It offers a wide range of calculations for turning, milling, drilling, and more, designed to enhance precision and boost productivity.

Cutting speed and feed recommendationsTap drill size calculationsTrue position calculations
📊 Productivity
(24)
freemium