GenCheck
Universal Generator Calculator
About
Safely manage generator capacity during power outages. This app helps you determine which devices your generator can power, avoid overloads, and follow critical safety guidelines. It works with any generator type and offers offline functionality for emergencies.
What's New in GenCheck
1.1
December 18, 2025
* More than 200 electric, gas, propane, and solar battery generators pre-loaded in the Generator Database * Fuel estimates now estimate run time under configured load * Top Rated Generators displays highly recommended models
MoreSubscription plans
GenCheck Annual
One Year Recurring Subscription
Developer apps
FAQ
What is GenCheck?
GenCheck is a utility app designed to help homeowners manage their generator capacity safely during power outages. It allows users to calculate which devices their generator can power, avoid dangerous overloads, and access critical safety information.
How much does GenCheck cost?
GenCheck is a paid app priced at $3.99. There is also an optional 'GenCheck Annual' subscription plan available for $3.99 per year, which includes a 3-day free trial.
Does GenCheck work offline?
Yes, GenCheck features an innovative 'Storm Safe' mode that ensures the app remains fully functional even without an internet connection, making it reliable during power outages when Wi-Fi may be unavailable.
What generators are supported by GenCheck?
GenCheck supports hundreds of popular generator models from brands like Honda, Generac, Champion, and more. If a specific model is not listed, users can enter custom specifications for any generator.
What safety features does GenCheck offer?
GenCheck provides comprehensive safety protocols, including carbon monoxide poisoning prevention, backfeed electrocution warnings, proper positioning guidelines, extension cord capacity requirements, and refueling safety protocols.
What devices can I add to GenCheck?
The app includes a library of dozens of pre-loaded household items and appliances with accurate wattage ratings. Users can also easily add custom devices and specify quantities for multiple items.
What is the age rating for GenCheck?
GenCheck has an age rating of 17+, indicating it is intended for mature users due to the nature of electrical safety and generator management.
How often is GenCheck updated?
The latest version of GenCheck is 1.1, which was last updated on December 18, 2025. Updates typically focus on improving functionality, expanding the device and generator databases, and enhancing safety features.