Electrical Pro Tools
Phase Calc for iOS is an advanced engineering app for most electrical designs, expecially symmetrical component analysis and three-phase power system calculations. Built for students, teachers, technicians, and engineers, it combines a polished mobile experience with a powerful technical workflow for fast, accurate analysis of unbalanced three-phase systems in the field, lab, or classroom.
The app performs both phase-to-sequence and sequence-to-phase transformations, with support for inputs in polar and rectangular form. It quickly resolves three unbalanced phase quantities into their positive-, negative-, and zero-sequence components, making it a practical tool for protection studies, fault analysis, system modeling, relay validation, and coursework.
More than a single-purpose calculator, Phase Calc is packed with specialized calculators, technical reference libraries, and built-in formulas to support everyday power systems work. Whether you are checking values, reviewing theory, or working through engineering problems more efficiently, the app puts essential tools in one place.
Results can be exported instantly, including vector data for plotting and graphical analysis, as well as technical report exports for documentation, review, and sharing. With powerful capabilities in a streamlined interface, Phase Calc delivers a complete mobile toolkit for three-phase analysis on iPhone and iPad.
I test transmission line relays and this app really helps me to quickly calculate my zero sequence values when testing a ground fault relay.
Developer Response
Thank you for your review. It is appreciated. We read each review and take them seriously. Please contact me within the app if you have any concerns or comments. Thanks again.
Great App
JLYBO
A great tool for anyone doing 3 phase and for the electrical student learning as well!!! Great job!!!!!! Can't wait to see what's next!!!
Developer Response
Thank you for your review. It is appreciated. We read each review and take them seriously. Please contact me within the app if you have any concerns or comments. Thanks again.
Glad I found this app
Amba320
Works great! Thank you !
Developer Response
Thank you for your review. It is appreciated. We read each review and take them seriously. Please contact me within the app if you have any concerns or comments. Thanks again.
Thank you
jherman03
Perfect tool for the job
Developer Response
Thank you for your review. It is appreciated. We read each review and take them seriously. Please contact me within the app if you have any concerns or comments. Thanks again.
This version is a completely new app design bringing new features far beyond simple electrical calculations. Please enjoy, and send any feedback within the app.
Version 2.0.0
The developer, Donnie Herman, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Donnie Herman
Size
13.4 MB
Category
Utilities
Compatibility
Requires iOS 17.0 or later.
iPhone Requires iOS 17.0 or later.
iPad Requires iPadOS 17.0 or later.
Mac Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
