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SPLnFFT Noise Meter

SPLnFFT Noise Meter

Serious audio measurements

60 ratings
166 reviews
#102 in paid Utilities
🔧 Utilities
🎵 Music
$3.99
In-App Purchases

Details

  • Released
  • Updated
  • February 18, 2010
  • December 24, 2023

Features

Developer

Fabien Lefebvre
✨Promote your app ✨
SPLnFFT Noise Meter screenshot #1 for iPhone
SPLnFFT Noise Meter screenshot #2 for iPhone
SPLnFFT Noise Meter screenshot #3 for iPhone
SPLnFFT Noise Meter screenshot #4 for iPhone
SPLnFFT Noise Meter screenshot #5 for iPhone
SPLnFFT Noise Meter screenshot #6 for iPhone
SPLnFFT Noise Meter screenshot #7 for iPhone
SPLnFFT Noise Meter screenshot #8 for iPhone
iphone
ipad
🧾$4.99
In-App Purchase↘︎
📉no. 102
Charts↘︎
📌Ready
Reviews summary↘︎
⭐166
Reviews↘︎
📝2+ tags
Tags↘︎
🔄6+ apps
Alternatives↘︎
❓5 answered
FAQ↘︎
📦w/o updates
Updates frequency↘︎
🖼️Get Icon
Icons↘︎

About

This app provides advanced audio measurement capabilities, including sound level metering, frequency analysis, and signal generation. It offers both simple interfaces for daily use and detailed metrics for professional applications, with features compliant with industry standards.

✓Sound level meter (noise meter)
✓Frequency analyzer
✓Frequency meter
✓Test signal generator
✓Dosimeter
✓Leq, peak, L10, L95 measurements
✓Real-time FFT analysis
Show original description

What users say

Summarized from real user reviews of SPLnFFT Noise Meter. Based on 60 reviews and a 4.8/5 average, it highlights the 12 positives and 10 negatives reviewers mention most about this Utilities app.

Positive things

  • ⭐Highly accurate sound measurements compared to professional equipment
  • 🎯Professional-grade features at affordable price point
  • 📊Comprehensive FFT and frequency analysis capabilities
  • 🎨Clean, intuitive, and visually appealing interface
  • 🔧Multiple weighting options (A, B, C, ISO-498) and response times
  • 📱Works reliably across multiple iOS devices and versions
  • 🛠️Built-in calibration tools for improved accuracy
  • 👨‍💼Responsive and helpful developer support
  • ⏱️Real-time SPL monitoring with min/max/average tracking
  • 🎵Useful for diverse applications (studios, live events, workplace safety)
  • 📈Stable and consistent performance over years of use
  • 🔄Regular updates and feature improvements

Negative things

  • 🎤Microphone gain stuck on auto with built-in iPhone mic
  • 📞Limited customer support accessibility (Facebook-only contact)
  • 🔄Persistent review request pop-ups despite already reviewing
  • 📱Display text sizing issues on some devices (iPhone 11)
  • 🌐No website or email support outside of Facebook
  • ⚙️Steep learning curve for non-audio professionals
  • 🔗Dead OSHA reference link in app
  • 📊Limited data export options (CSV only)
  • 🎬Cannot record audio with video/dB levels simultaneously
  • 🔋Performance issues on older devices (iPad slowdown reported)
See all reviews

What's New in SPLnFFT Noise Meter

7.1

December 24, 2023

No more long press to change frequency weightings. Re-compiled for latest iOS. Better handling of various screen sizes and shapes.

1

In-App Purchases

$4.99

Export raw data to Dropbox + PRO features

This extension targets professional users. It makes it possible to export some raw measurements to a Dropbox account, for further post-processing using tools like Matlab or Excel. IT IS HIGHLY RECOMMENDED TO TRY BEFORE BUYING ! New tabs: SIL&SNAP

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Charts

Top Paid

📉 102-14

Utilities

This app dropped -14 positions in Utilities chart.

Last updated on August 29, 2026.

User reviews

Most RecentHighest RatedLowest Rated

Stop working

After about a year the app no longer works on my iPhone.
Audio.phile_Audio.phile_

Sound meter

I bought this app and paid for it. The data is not possible to save. The Dropbox link goes nowhere and cannot be changed. A picture is not very useful. I am told I have to pay for advanced features. What are they? Why am I not asked in advance? I fear that I will pay twice for the same thing.
chorley1010chorley1010

Amazing

I’m a full time sound engineer. Yes I have calibrated RTA mics and room measurement software, but I’ve compared this app side by side with those tools and this is perfectly usable and more than accurate enough for most situations.
JeffreyyyyyJeffreyyyyy

Indispensable

Je l’ai acheté ily a bien des années et il me sers à chaque prestation pour régler l’EQ et volume. Aussi pour éliminer un Larsen en reconnaissant la fréquence coupable.
À la maison je l’utilise pour régler les volumes de mes bandes orchestres.
Un petit investissement pour cette app devenue indispensable dans ma “boîte à outils” :-)
Show more
AlanC76AlanC76

Music

Working in bars and loud music I found this app invaluable.
nick2076425nick2076425
See 161 more reviews

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User experience

🐞

Reported Bugs

11 issues

Microphone gain slider unresponsive/locked on auto

Bug

Landscape mode gets stuck, preventing setting changes

Bug

Text display cropped on iPhone 11 (showing '10...' instead of '100.1')

Bug

App freezes and requires reboot on some devices

Bug

Review request pop-up appears repeatedly even after review submitted

Bug

Rotation setting notification appears on every app launch

Bug

iPhone 5s detected as iPhone 6 (potential calibration impact)

Bug

iPhone 6 support not included in updates

Bug

Readings drift to zero periodically on older iOS versions

Bug

Settings reset when app is closed (dB mode reverts)

Bug

Dead hyperlinks (OSHA reference)

Bug
✨

Requested Features

15 requests

Ability to override automatic microphone gain control

Feature

Recording functionality with audio and dB level overlay

Feature

Landscape mode support with full FFT display

Feature

Extended frequency range (down to 20Hz for 3rd octave analysis)

Feature

Microphone frequency calibration curve adjustment

Feature

Waterfall diagram with spectrum replay capability

Feature

SIL scales (e.g., SIL4) support

Feature

Silent alarm for loud environments

Feature

Video recording with dB level overlay

Feature

Ability to save and replay FFT spectral data over time

Feature

Better app icon design

Feature

Tutorial or help documentation for acoustic terminology

Feature

Default email address field for result sharing

Feature

Bluetooth audio input support

Feature

Bar graph scale and cursor labeling improvements

Feature

FAQ

What does the SPLnFFT Noise Meter app do?

SPLnFFT is a comprehensive sound level meter and audio analysis tool for iPhone and iPad. It offers features like frequency analysis, test signal generation, and dosimeter functions, catering to both casual users monitoring noise exposure and professionals needing precise acoustic measurements.

What are the key features of SPLnFFT?

Key features include a sound level meter with real-time displays, frequency analysis via FFT, a test signal generator, and various professional measurement metrics like Leq, peak, and L95. It also supports A&C weightings compliant with ANSI standards.

Is SPLnFFT free to use?

The app is free to download and use with basic functionalities. However, it offers in-app purchases for advanced features and professional-grade measurements, allowing users to unlock its full potential for more detailed audio analysis.

What are the requirements for using SPLnFFT?

To use SPLnFFT, you must grant it access to your device's microphone. Additionally, screen rotation must be unlocked on your iPhone or iPad for optimal display and functionality. Built-in help messages are available within the app.

What is the usable range for sound level measurements with this app?

The standard usable range for sound level meters, including this app, is typically between 30dB(A) and 130dB(A). It's important to note that measuring extremely low levels like 0dB(A) in a quiet room is not feasible due to ambient noise and the limitations of standard sound level meters.