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About this app
Attenuator is a utility for anyone working with radio frequency sources and needs to know power and voltage after attenuation. You can specify an input voltage (Vpp or Vrms) and dB of attenuation to get the output voltage, power and attenuation. The impedance can be specified, typically 50Ω for most systems. There is a new emphasis on NMR utility, with options for calculating pulses based on reference power and pulse length. Powers are in Watts, dBm, and dB values. Measure local magnetic field to check stray static fields from magnets. See the local barometric pressure, useful if the magnet boil-off is high
What's new
Version 5.50 · Jul 1, 2026
- Added Spanish and Korean localizations - Improved translations across the app, especially for NMR, RF power, magnetic field, and accessibility text - Improved VoiceOver support for Field, Barometer, Power, Pulse, and Settings - Improved spoken units for VoiceOver, including dB, dBm, Vpp, Vrms, watts, tesla, pressure units, and pulse durations - Improved Dynamic Type and long-language layout on the Field, Barometer, Power, and Pulse tabs - Improved the Power calculator, including attenuation slider behavior, dB/dBm entry, unit prefixes, keyboard handling, and saved settings - Improved the Pulse calculator, including localized labels, NMR pulse/power wording, keyboard handling, and long text layout - Improved the magnetic field and barometer screens, including safer warning text, barometer unit selection with VoiceOver, and better error handling - Removed deprecated UI code paths and fixed warnings - Improved UI and general reliability - Ad-free and fully unlocked, with no in-app purchases
