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Best The Following Questions Are Harder, You Will Need To Decide What Form The Useful Energy Is In. Calculate Their Energy Efficiency (show Working). A TV Takes In 600J Of Electrical Energy And Gives Out 300J Of Light, 240J Of Sound And 60J Of Heat Energy (be Careful Here!). Energy. Apps & Games

137+ iOS apps & games curated and reviewed

4.4 avg rating
19 free apps & games
Updated May 2026

If you already know GridRewards, this is the deeper bench. 137+ The following questions are harder, you will need to decide what form the useful energy is in. Calculate their energy efficiency (show working). A TV takes in 600J of electrical energy and gives out 300J of light, 240J of sound and 60J of heat energy (be careful here!). energy. apps and games for iPhone, all reviewed and ranked by user rating, recency, and download trend as of May 2026.

Top Picks for The Following Questions Are Harder, You Will Need To Decide What Form The Useful Energy Is In. Calculate Their Energy Efficiency (show Working). A TV Takes In 600J Of Electrical Energy And Gives Out 300J Of Light, 240J Of Sound And 60J Of Heat Energy (be Careful Here!). Energy.

GridRewards: Energy Efficiency#1

GridRewards: Energy Efficiency by Energy Technology Savings LLC

Cash back to save electricity!
Editor's Choice
🌟 Lifestyle
4.6😞(867 ratings)
FreeAds
GridRewards: Energy Efficiency screenshot 1
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GridRewards: Energy Efficiency screenshot 3
GridRewards: Energy Efficiency screenshot 4
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GridRewards: Energy Efficiency screenshot 6

Earn cash back rewards and reduce your electricity bill with an award-winning free app that helps you save energy. Get paid for unplugging during events, refer friends for extra earnings, monitor your carbon footprint, and contribute to community-wide energy conservation efforts.

What We Love

  • 💡 Helpful advice for energy conservation
  • 👍 Provides useful data on energy sources

Room to Improve

  • 🐛 Inaccurate event performance data and reports
  • 🐛 Buggy and unreliable app functionality
  • 🔒 Poor customer support and lack of transparency
Electrical Formulator#2

Electrical Formulator by Historycentral.com Inc

Strong Contender
📊 Productivity
5.0(1 ratings)
FreeIn-App Purchases
Electrical Formulator screenshot 1
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This powerful electrical calculation tool offers hundreds of conversion and calculation tools to solve various electrical design and engineering challenges. It allows users to save, print, and share results, and access frequently used formulas, making it an essential utility for engineers, electricians, and energy professionals to work efficiently and accurately.

Evo Energy - Cost Calculator#3

Evo Energy - Cost Calculator by Prakit Kunakronpalang

Electricity Usage Calculator
Worth Considering
📊 Productivity
3.5(4 ratings)
FreeAds
Evo Energy - Cost Calculator screenshot 1
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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.

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Energy Analyzer
Energy Analyzer
Energy Analyzer
Your real-time electric usage!
Free

An app that provides Consumers Energy customers with real-time insight into their energy usage, helps identify ways to save on utility bills, set goals, and create energy-saving habits. Customers can also access additional features by pairing the app with a free Energy Bridge. Eligible for Consumers Energy electric customers with AMI electric meters and a consumersenergy.com account.

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Physics Toolkit
Physics Toolkit
Physics Toolkit
Physics calculators and tables
Free

This physics calculator app provides a comprehensive collection of calculators, tables, and formulas for physics students and professionals to perform various calculations and reference essential information. With this app, users can access a wide range of tools and data, from basic calculations to advanced topics, making it a must-have resource for anyone working with physics.

📚 Education
(49)
6
Energy Tracker
Energy Tracker
Energy Tracker
Manage & analyze meter reading
Free

This application helps you manage and analyze your meter readings for electricity, water, gas, and heat, providing insights into your consumption and identifying areas for savings. With features like CSV import, intelligent scanning, and graphical analysis, you can easily track your energy usage and make informed decisions to reduce your costs.

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(50)
7
Solar Calculator The Original
Solar Calculator The Original
Solar Calculator The Original
by Josean Maya
Free

This application helps users determine their solar power needs by calculating the required battery backup, voltage, and number of solar panels. It also provides a battery load calculator that breaks down energy needs by hour.

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8
Ohms Law Calc.
Ohms Law Calc.
Ohms Law Calc.
Wire Size & Voltage Drop
Free

Ohms Law Calc. is a comprehensive app featuring 62 electrical calculators and formulas for various calculations such as voltage, current, resistance, and power. Explore a wide range of tools including voltage drop, power factor, transformer calculator, and more!

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9
MACH Energy
MACH Energy
MACH Energy
by MACH Energy
Free

This mobile application helps track and manage a building's energy use and operating conditions in real-time, allowing users to identify issues, collaborate with teams, and make informed decisions. Download the app to monitor and optimize your building's energy usage on-the-go with a subscription to the service.

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MyEPB
MyEPB
MyEPB
Pay, track & manage—anywhere
Free

Track your home's energy usage and make secure payments with MyEPB. Maximize savings and stay informed about outages and energy-saving opportunities. Sign up now to take control of your energy usage.

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Energy Efficiency Hunt
Energy Efficiency Hunt
Energy Efficiency Hunt
by GEORGIA POWER COMPANY
Free
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(0)
12
Kinetic Energy Calculator
Kinetic Energy Calculator
Kinetic Energy Calculator
Kinetic energy made easy
Free

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.

🔧 Utilities
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13
Raycon Energy
Raycon Energy
Raycon Energy
by Blaze Automation Services (P) Ltd.
Free
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(0)
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Remotely — Home Energy Audits
Remotely — Home Energy Audits
Remotely — Home Energy Audits
Fast, easy home energy audits
Free
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15
Thermal Efficiency Calculator
Thermal Efficiency Calculator
Thermal Efficiency Calculator
From FIS
Free

This application calculates the thermal efficiency of a fired heater using stack flue gas temperature and excess Oxygen in the flue gas, providing a simplified calculation to monitor and improve heater efficiency. By using this tool, you can identify energy savings potential and take steps to optimize your heater's performance.

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Thermal Transmittance Calc
Thermal Transmittance Calc
Thermal Transmittance Calc
Determination of heat loss
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This application helps you assess heat loss and potential humidity issues in building structures by calculating thermal transmittance. Simply input temperature, humidity, and layer details, and receive immediate results, including a schedule to track temperature, humidity, and dew point changes.

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B-control Energy Manager
B-control Energy Manager
B-control Energy Manager
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Energy Savings Advisor
Energy Savings Advisor
Energy Savings Advisor
by NIDEC LEROY-SOMER HOLDING
Free

This mobile app helps you estimate and assess energy savings with high-efficiency drive and motor solutions, allowing you to compare customized scenarios and receive a detailed report. Try it out and get expert advice to study your energy saving requirements in detail!

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19
Meltek
Meltek
Meltek
by Meltek
Free

This service rewards users for reducing their electricity usage during peak demand periods, helping to alleviate strain on the power grid. By participating, users can earn cash, gift cards, or other rewards, while also contributing to a more sustainable future.

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TV-Tools
TV-Tools
TV-Tools
TV-Tools Home Theater App
$2.99
🔍 Reference
(0)

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