Spectrum Analyzer+ Audio FFT

Spectrum Analyzer+ Audio FFT

Find Peak Hz, Hum & Room Modes

5 ratings
1 review
Free
With Ads

Details

Released
March 31, 2026
Updated
November 13, 2026

Features

Spectrum Analyzer+ Audio FFT screenshot #1 for iPhone
Spectrum Analyzer+ Audio FFT screenshot #2 for iPhone
Spectrum Analyzer+ Audio FFT screenshot #3 for iPhone
🖼️Get Icon
Icons↘︎

About

Analyze live audio frequencies from your microphone to identify peak Hz, hum, and room modes. Capture and average sound over five seconds to pinpoint the strongest frequencies and their levels. Compare changes by saving reference captures and analyzing differences.

✓Live frequency spectrum display
✓5-second audio capture and averaging
✓Peak frequency and level identification
✓Adjustable dB range
✓Reference capture comparison
✓Specialized analysis modes (Voice, Machine, Room)
✓CSV export of spectrum data
Show original description
+2

What's New in Spectrum Analyzer+ Audio FFT

1.0.38

November 13, 2026

• The empty strip at the top of the Analyzer and Guide tabs is gone. • Everything moves up: Start, Capture 5 s and the Save, CSV and Share buttons of the 5-s average card sit higher, and more fits on small screens.

More

User reviews

Awfull

Adds, especially the ones covering the entire screen are making this app utterly useless. Especially since there is usually no weay of getting rid of them other than killing the app. To make bad things worse, it was trying to give me a virus.

Response from developer

Thanks for telling us, and sorry the ads got in your way. A full-screen ad should always offer a close button after a few seconds; if one stayed stuck until you closed the app, that is a bug, not how it is meant to work. We are testing exactly that path on iPhone for the update we are preparing now.

Developer apps

FAQ

What is Spectrum Analyzer+ Audio FFT used for?

Spectrum Analyzer+ Audio FFT displays the live frequency spectrum of sounds captured by your iPhone's microphone. It helps identify peak frequencies, hums, and room modes, and allows for comparison of audio changes over time.

Does Spectrum Analyzer+ Audio FFT have ads?

Yes, Spectrum Analyzer+ Audio FFT contains advertisements. The pink noise generator feature is unlocked for 24 hours by watching a short ad.

What are the analysis modes in Spectrum Analyzer+ Audio FFT?

Spectrum Analyzer+ Audio FFT offers three specialized modes: Voice (80–4000 Hz) for pitch analysis, Machine (20–2000 Hz) for detecting mains hum, and Room (20–500 Hz) for analyzing low-end room modes.

Can I compare audio changes with Spectrum Analyzer+ Audio FFT?

Yes, you can save up to 10 captures as references. After making a change (e.g., moving a speaker), you can capture again and the app will show the average band-level difference in dB compared to the reference.

Is Spectrum Analyzer+ Audio FFT suitable for professional sound measurements?

No, the app states that a phone microphone is not a certified sound level meter. It is intended for finding frequencies and comparing changes, not for compliance measurements.

What devices does Spectrum Analyzer+ Audio FFT support?

Spectrum Analyzer+ Audio FFT is supported on iPhone devices.

How often is Spectrum Analyzer+ Audio FFT updated?

The latest version is 1.0.37, and it was last updated on November 8, 2026. This indicates a recent update.

What is the age rating for Spectrum Analyzer+ Audio FFT?

Spectrum Analyzer+ Audio FFT has an age rating of 17+, which is typical for apps that may involve complex technical information or require a certain level of user maturity.