Lowest price: Free 10 months ago (-100%)
This app helps you accurately calculate power outage durations and battery performance. It factors in real-world conditions like battery discharge, inverter efficiency, and device consumption to provide realistic estimates for runtime and charging.
27.1.1
October 27, 2026
- If you bought the app before it became free with an in-app purchase, Premium is now unlocked automatically — no paywall, no need to restore purchases. - Improved how we verify purchases and restores, so everything stays accurate and reliable. - Minor stability improvements.
More$7.99
Full Access
Unlock all premium features
Hello! There may have been a temporary glitch. You can restore your purchase for free using the 'Restore Purchase' button. Please try this method, and if it doesn't work, contact us at work@borunovalex.com.
Blackout Math is a specialized calculator designed to provide realistic estimates for power outage durations and battery performance. It goes beyond theoretical numbers to account for real-world factors like battery chemistry, inverter efficiency, and device usage.
Blackout Math calculates usable energy by considering the battery's nominal capacity, voltage, and a safe depth of discharge specific to its chemistry. It also factors in losses from the inverter to give you a realistic usable energy figure in Wh and kWh.
Yes, you can add any household appliances by specifying their power, quantity, and usage time. The app will then calculate their real energy consumption and show each device's impact on the total load, determining the actual runtime.
Yes, Blackout Math provides accurate charging time estimates by considering battery chemistry and charging limits. It also offers warnings about unsafe charging currents and calculates charging power based on voltage and amperage.
Absolutely. The app is perfect for choosing portable power stations from brands like EcoFlow, Bluetti, and Anker, as it helps estimate backup time and analyze energy usage for various devices.
Blackout Math has an age rating of 4+, making it suitable for a wide range of users. It is available on both iPhone and iPad devices.
The latest version of Blackout Math is 26.5, and it was last updated on April 14, 2026. This indicates a relatively active development cycle for the application.
No, Blackout Math does not contain advertisements. It is a completely ad-free application, allowing for an uninterrupted user experience.
