RMS Calculator

Kei Suefuji Utilities iPhoneiPadiPod touch

RMS Calculator is a paid Utilities app for iPhone and iPad by Kei Suefuji. Requires iOS 12.0. Updated January 19, 2026.

Price: 1.99 USD; on the App Store
Size: 8 MB; Age 4+
Updated: Jan 19; 2026 · v1.3.0

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Screenshots

About RMS Calculator

How should the effective value be calculated? What is the amplitude of the effective value of 100V? In such a case, do you have any experience of calculating the effective value while checking the calculation formula every time? This app can quickly convert the effective value and amplitude of AC waveforms. There are 4 types of conversion units: rms value, average value, amplitude, and Peak to Peak Amplitude. By inputting the amplitude or effective value of the AC waveform and selecting the unit of the input value, the value converted into 4 types of units will be displayed.

What’s new

Version 1.3.0 · Updated January 19, 2026

Minor improvements.

App privacy

The developer, Kei Suefuji, reported these privacy practices to Apple.

Data Not Collected

The developer does not collect any data from this app.

App details

RMS Calculator is a paid Utilities app for iPhone, iPad and iPod touch, developed by Kei Suefuji. It requires iOS 12.0 or later, is 8 MB to download and is available in 10 languages. It was first released on May 3, 2020 and last updated on January 19, 2026.

Category: Utilities
Price: 1.99 USD
Version: 1.3.0
Size: 8 MB
Requires: iOS 12.0 or later
Compatibility: iPhone, iPad, iPod touch
Languages: English, French, German, Italian, Japanese, Korean, Portuguese, Russian and 2 more
Age rating: 4+
Released: May 3, 2020
Last updated: January 19, 2026
Developer: Kei Suefuji

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Alternatives to RMS Calculator

Looking for apps like RMS Calculator? Here are 6 similar apps on the App Store. The highest rated is Operational Amplifiers Pro (5.0/5), and 1 of the 6 are free to download.

RMS Calculator vs. alternatives
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RMS Calculator	–	1.99 USD	January 19, 2026
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GeerGap	–	Free	Jul 13, 2026	Compare
Operational Amplifiers Pro	5.0 / 5 (1)	4.99 USD	Oct 11, 2026	Compare

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