220+ iOS apps curated and reviewed
The best energy calculator apps on iPhone average 4.5★ across 220+ titles — we've ranked them by what real users actually keep on their phones. Updated May 2026.
This application helps veterinarians and veterinary professionals calculate the estimated energy density of pet food from its nutritional analysis, providing results based on various equations. By entering the diet's proximate analysis, users can obtain the metabolizable energy density, macronutrient contributions, and nutrient ratios, making it a valuable tool for pet nutrition planning.
This application helps you calculate the consumption and costs of electrical devices for any defined usage period, allowing you to answer questions like how much it costs to run your TV or how much you can save with energy-efficient lighting. By using this tool, you can make informed decisions about your energy usage and potentially save money on your electricity bills.
This application helps users calculate the energy consumption and operating cost of their electrical devices, appliances, or industrial machines, providing instant results for energy usage, cost analysis, and carbon emissions. By tracking usage and optimizing power consumption, users can save money on their electricity bills and reduce their environmental impact.
This application calculates the kinetic energy of an object from its mass and velocity, and offers additional features in its Pro version to calculate mass or velocity from kinetic energy and another parameter. Download it now to easily compute kinetic energy and more.
This electricity usage calculator helps you estimate the cost of running various appliances, allowing you to save on power consumption costs. Easily calculate your household electricity usage and make informed decisions about your energy expenses by trying out this convenient tool.
Experience the ultimate mobile calculator with 10 powerful calculators and financial worksheets, trusted by millions worldwide for its unrivaled accuracy and advanced features. From standard and scientific calculators to unit converters and graphing tools, this app has it all. Get it now for advanced calculations at your fingertips!
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.
A versatile calculator app for iPhone and iPad offering over 40 calculators and unit converters for finance, health, and more. Simplify your calculations with just one app today!
A comprehensive all-in-one calculator app with features like scientific calculator, unit converter, currency converter, percentage calculator, and more for everyday use. It provides a wide range of calculation tools from basic arithmetic to complex conversions and financial calculations. Try it out now for convenient and efficient calculations!
Try Calculator₊, the ultimate mathematics tool offering basic, scientific, and plus calculations. Ideal for homework, exams, and managing expenses, this app is like having a personal math tutor on your phone. Download now for easy and intuitive math solutions!
Calculator - Free Calculator is a versatile and user-friendly app designed for iPad. Perform a wide range of calculations effortlessly with its optimized features. Download now to streamline your calculations on the go!
A color calculator app that helps users find complementary color schemes for design projects. Simply input a base color and let the app generate harmonious color combinations for your projects. Try it now to elevate your design choices!
A simple and intuitive calculator app with essential functions like addition, subtraction, multiplication, and more. Customize with multiple color schemes, copy results easily, and use additional functions on iPad. Experience the perfect balance of features and simplicity today!
A versatile scientific calculator app designed for math enthusiasts, offering features like natural display for textbook-like equations, symbolic and numeric modes, complex number calculations, calculus functions, statistical analysis, and unit conversion. With a premium upgrade option for additional advanced features and customization. Access the power of NCalc FX now!
The app is a comprehensive graphing calculator that features algebraic entry, math functions, graph plotting, statistics, matrix operations, unit conversion, BASIC programming, chemistry tools, geometry calculations, finance functions, and a built-in user guide for easy reference. It offers a colorful, fast, and fluid experience on iPhone and iPad with advanced features like touch input, high-resolution graph outputs, and fast computation speeds. Explore its diverse functionality to enhance your mathematical tasks.
Discover the best hand calculator for all your basic math needs - addition, subtraction, multiplication, division, and more, with customizable features like recording and recalling past calculations and touch sound. Perfect for school children and anyone seeking a simple and efficient calculator solution!
A fully customizable calculator app with basic and scientific functions, memory features, and a history tape. Design your own color theme, access scientific functions, and enjoy convenient gestures for a seamless calculation experience. Download now for efficient and personalized calculations on-the-go!
Experience easy and efficient calculations with this voice-operated calculator app featuring an ergonomic layout, large keys, backspace function, and usage history. Simplify your math tasks with just one step!