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Please add support for selecting different audio inputs (phone mic, system audio, combined input, or external/headphone mic). Also, the graph is always raised due to background noise, please include a baseline/noise floor calibration option, so it stays flat and only shows sounds above the ambient noise. It would also be very helpful to have the ability to record audio along with the graph for later analysis. Overall, it's a really good app.
★★★★★Protik Chanda· Nov 17, 2025
Idea for a feature: Please add a feature to the app, so it can load a target FR curve. This can make this app super useful for manually tuning audio systems or room acoustics. For example use Squiggling as a reference for targets like Harman which uses IEM and Headphones. But I guess there might be such targets for Room acoustics and sound systems as well. This simple feature can be really useful
★★★★★Stefan Kuna· Jan 25, 2026
I use this to set the RPM of aircraft props. Would be nice if it could be set to display RPM directly, but it's easy enough to calculate Hz = RPM / 60 * number of blades. Great app.
★★★★☆AndrewB· Oct 31, 2025
Works pretty well at work for finding troubleshooting frequencies in the meeting rooms as our mics and setups constantly change
★★★★☆Leo Mihalache· Jan 29, 2026
Very useful application. Simple and easy to use. One issue that I have is that the logarithmic scale used is in base 10. It would be nice if there were an option for base 2 logarithmic scale.
★☆☆☆☆Joe· Feb 25, 2026
it's wonderful, I've never been more intouch with what frequencies can do to a human.
★★☆☆☆Andy M· Oct 23, 2025
Not clear how to use it I want to verify what wavelength has the red-light I just purchased but is not clear
★☆☆☆☆Joe· Mar 31, 2026
The app has been compromised by playstore.it should clearly tell frequencies, but its settings are set till you pay the vultures! don't use it it's not accurate.
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