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SPL Meter

SPL Meter

Sound Level Meter

25 ratings
168 reviews
🔧 Utilities
🎵 Music
$0.99
In-App Purchases

Details

  • Released
  • Updated
  • March 27, 2009
  • December 22, 2025

Features

Developer

Andrew Smith
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SPL Meter screenshot #1 for iPhone
SPL Meter screenshot #2 for iPhone
SPL Meter screenshot #3 for iPhone
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🧾$0.99
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About

This application functions as a professional-grade sound level meter, measuring decibels (dB) with advanced DSP algorithms. It offers adjustable filters, decay rates, and ranges, and can be calibrated for accuracy. It supports both internal and external microphones for versatile sound measurement.

✓A and C weighting filters
✓ANSI Fast or Slow decay
✓40dB to 120dB ranges
✓Adjustable calibration
✓Internal/External mic support
✓Universal app
Show original description

What users say

Summarized from real user reviews of SPL Meter. Based on 25 reviews and a 4.0/5 average, it highlights the 10 positives and 10 negatives reviewers mention most about this Music app.

Positive things

  • ✅Accurate sound level measurements when calibrated
  • 💰Excellent value at $0.99 price point
  • 📱Works across multiple Apple devices (iPhone, iPad, iPod)
  • 🎯Simple and intuitive user interface
  • 🔧Analog meter design looks professional and authentic
  • ⚙️Customizable settings (A/C weighting, fast/slow response)
  • 🎛️Useful for home theater calibration and audio setup
  • 👨‍💻Responsive developer support and quick bug fixes
  • 📊Reliable relative measurements for comparative testing
  • 🔊Sensitive microphone picks up even faint sounds

Negative things

  • 🐛Inconsistent and unstable meter readings
  • 💳Pricing discrepancies (advertised as $0.99 but charged $6.99)
  • 📐UI scaling issues on various screen sizes and orientations
  • 🔍Text and meter display too small to read easily
  • 🖼️Outdated retro interface design
  • ⚠️Accuracy issues at low frequencies with built-in microphone
  • 🎨Blurry interface after updates
  • 📱Compatibility issues with newer iOS versions and devices
  • 🔄Screen rotation causes display glitches and crashes
  • ⚡App crashes on certain device models
See all reviews

What's New in SPL Meter

11.12

December 22, 2025

-Bug fixes and stability improvements

1

In-App Purchases

$0.99

Controls & Ad-Free

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User reviews

Most RecentHighest RatedLowest Rated

Too inconsistent

The meter is too inconsistent compared to other meters. Wouldn’t recommend paying for this.
DENZELAMDENZELAM

Efficace et précis.

Très bon sonomètre.
Seul petit bémol, dommage que l’on ne puisse pas travailler en retournant l’iPhone pour que le micro soit dirigé vers la source sonore. L’affichage ne tourne pas à 180°.
misterdjimisterdji

Don’t buy here’s why

Don’t purchase this app. The meters are inconsistent. You’ll get a measurement then it changes completely. Not stable.
once a simpletononce a simpleton

Price

It Said it was .99 but charged me 6.99
sebdjm1sebdjm1

Great little Sound Meter

I really like this App, it seems accurate enough for general use and I can use it on my iPhone and iPad. It’s a bit retro, but there’s nothing wrong with that :-)

The latest update today fixed an issue with not being able to use the iPad Pro 5th Gen microphones - shame it takes so long for Apple to ‘test’ and release updates, like two months.
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See 163 more reviews

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User experience

🐞

Reported Bugs

11 issues

Meter readings change completely and are not stable

Bug

App crashes on iPhone 6s Plus with jumbled screen display

Bug

Screen scaling issues on iPad models

Bug

Display glitches when rotating device between portrait and landscape

Bug

Greyed out settings after installation

Bug

Blurry UI and low resolution after updates

Bug

App fails to respond or shows 999dB reading

Bug

Incompatibility with iOS 8 and iOS 10.3.2

Bug

Screen only fills bottom-left corner of display

Bug

Microphone not responding with external mics

Bug

Feedback/screeching with certain external microphones

Bug
✨

Requested Features

12 requests

Larger meter display in landscape mode

Feature

Digital-only display option without analog meter face

Feature

Peak hold and min/max reading indicators

Feature

Time-based decibel graph visualization

Feature

Linear response visual option in addition to logarithmic

Feature

Lighter display theme for outdoor readability

Feature

Larger digital numbers for better visibility

Feature

Data capture and note-tagging functionality

Feature

Three-point calibration system

Feature

Octave band analysis

Feature

Automatic range selection

Feature

Improved knob/dial controls (less touchy)

Feature

FAQ

What does the SPL Meter app do?

The SPL Meter app functions as a professional-grade sound level meter for your iPhone, iPad, or iPod touch. It measures sound pressure levels in decibels (dB) using advanced DSP algorithms and offers features like adjustable filters, decay rates, and ranges, mimicking traditional analog SPL meters.

What are the key features of SPL Meter?

Key features include A and C weighting filters, ANSI Fast or Slow decay settings, adjustable ranges from 40dB to 120dB, and the ability to calibrate the meter for accuracy. It also supports both internal and external microphones, with an option to use a specialized pro-grade measurement mic for enhanced performance.

How much does SPL Meter cost?

The application is described as bargain-priced to make it accessible. While the exact price is not stated, it is positioned as an affordable professional tool, and the description mentions 'buy once, and use on all of your iOS devices' indicating a one-time purchase model.

What devices is SPL Meter compatible with?

SPL Meter is a universal app designed for iPhone, iPad, and iPod touch devices. It requires iOS 6 or later to disable mic filters and limiters for real-world performance. Specific features like upside-down screen flipping may vary on certain models like the iPhone X.

Who would benefit from using SPL Meter?

This app is essential for anyone working in audio, including audio professionals, acousticians, and sound engineers. It's also useful for anyone who needs to accurately measure sound levels for environmental monitoring, construction, or other applications where precise decibel readings are required.