# PowerMeter - Professional Wattmeter for iOS > Camera-based wattmeter app for measuring electricity consumption and solar production. (iPhone/iPad app by Deep Scoring Ltd.) - Source: https://appshunter.io/ios/app/powermeter-professional-wattmeter-for-ios/id417113538 (this page in markdown: same URL + `.md`) - Developer: [Deep Scoring Ltd](https://appshunter.io/developer/417113541) - Category: Utilities, Education - Price: $1.99 - Rating: 5.00/5 from 1 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 8.0 · 1 MB - Languages: American English - Released: 2011-02-05 - Data updated: 2026-06-10 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/powermeter-professional-wattmeter-for-ios/id417113538/reviews.md ## What is PowerMeter? PowerMeter App turns your device into a Wattmeter. Just point the camera at the red flashing light on your electricity meter and get the reading! Using PowerMeter you can measure the standby power of devices at home or electricity production of your Solar PV panels. The App measures the time between impulses ±20ms and calculates the corresponding power usage with high accuracy. Depending on the class of your electricity meter the result is ±1% or ±2% whereas popular energy monitors are sometimes even 10% off. Used by professionals, many 5 and 4 star reviews! ========== • "Nice app - works perfectly. Congratulations!" – Lavello, Italy • "Excellent - Excellent thanks for your effort!" – Solar narsti, Australia • "Superb App to know your consumption instantaneously. Recommended!" – Pascal, Switzerland ========== --- Note: This App will not work with infrared LED, so if you can't see a red light flashing on the meter the camera will not be able to detect the impulse. ## Key features - Camera-based wattmeter - Measures standby power - Calculates solar PV production - High accuracy readings - Works with flashing red lights ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/powermeter-professional-wattmeter-for-ios/id417113538/reviews.md ### 5/5 — Perfect watt meter *2019-06-09, version 3.1.0* + Perfect meter! - Pls optimize to iPad in next version... - on latest ios, not show icon on homescreen ### 4/5 — Nice easy to use little app *2011-07-01, version 1.0.1* Nice little app that does what it says. Simple to use. Would be great if it averaged the kW usage over the period you interogated the meter and kept that average in a table for future reference and comparisons. ## Frequently asked questions about PowerMeter ### What is PowerMeter? PowerMeter is a utility app that uses your device's camera to function as a wattmeter. It reads the flashing red light on your electricity meter to measure power consumption and solar panel production with high accuracy. ### How accurate is PowerMeter? PowerMeter offers high accuracy, with results typically within ±1% or ±2% depending on your electricity meter's class. This is significantly more accurate than some popular energy monitors which can be off by 10%. ### What devices does PowerMeter support? PowerMeter is supported on iPhone and iPod devices. It requires a camera to function. ### Does PowerMeter work with all electricity meters? PowerMeter will not work with infrared LED meters. It specifically requires a meter with a visible red light that flashes to indicate power usage. ### What is the price of PowerMeter? PowerMeter is a paid application, available for $1.99. There are no in-app purchases or subscriptions mentioned. ### How often is PowerMeter updated? The latest version of PowerMeter is 3.1.0, which was last updated on March 9, 2017. This indicates it has not received updates in several years. ### What is the age rating for PowerMeter? PowerMeter has an age rating of 4+, making it suitable for a wide range of users. The app's functionality is straightforward and does not contain mature content. ### Can PowerMeter measure standby power? Yes, PowerMeter can be used to measure the standby power of devices at home. By pointing the camera at the flashing light on your electricity meter, you can determine the continuous power draw. ## Version history (last 5 releases) ### 3.1.0 — 2017-03-09 This app has been updated by Apple to display the Apple Watch app icon. • Add decimal point to the reading • Update for iOS 10 ### 3.0.0 — 2015-06-11 Update for iOS 8.0 and iPhone 6 ### 2.1.0 — 2012-11-15 ✔ Improved accuracy and sensitivity ✔ Add support for yellow LED ✔ Add 'Email To' action ✔ Add 'Data Logger' – data resampled by minute in a csv file ### 2.0.0 — 2012-10-09 ✔ Add support for Current Transformer (In-App purchase). ✔ Add history of measurements. ✔ Updated for iOS 6 and iPhone 5. ### 1.1.0 — 2011-07-13 – Swipe left on the LCD to clear the reading – Add 'Rate on the App Store', 'User Guide', 'Support' buttons ## Apps similar to PowerMeter | App | Rating | Price | Category | | --- | --- | --- | --- | | [Record Phone Calls: Recorder](https://appshunter.io/ios/app/record-phone-calls-recorder/id1513163699) | 3.2 (50) | Free | Utilities | | [SpeakTimer - Voice Alert Timer](https://appshunter.io/ios/app/speaktimer-voice-alert-timer/id1331136866) | 4.4 (212) | Free | Utilities | | [Universal Remote TV Smart View](https://appshunter.io/ios/app/universal-remote-tv-smart-view/id1211079752) | 3.8 (2,351) | Free | Utilities | | [ETKAmobile](https://appshunter.io/ios/app/etkamobile/id1314912884) | 3.0 (2) | Free | Utilities | | [AsiaSat](https://appshunter.io/ios/app/asiasat/id1230884524) | 5.0 (2) | Free | Utilities | | [SunEnergyXT](https://appshunter.io/ios/app/sunenergyxt/id6444396114) | — | Free | Utilities | ## More apps by Deep Scoring Ltd - [TargetScan - Pistol & Rifle](https://appshunter.io/ios/app/targetscan-pistol-and-rifle/id448045769) All apps by Deep Scoring Ltd: https://appshunter.io/developer/417113541 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*