Comparison

DeciMate SPL vs Spectrum Analyzer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

DeciMate SPL

Features
Read full description

DeciMate SPL helps you monitor sound levels during rehearsals, DJ sets, small events, venue checks, and live-sound work. It turns your iPhone into a practical SPL monitoring companion with a clean real-time meter, calibration tools, threshold alerts, session history, export options, and expressive visual feedback that makes level changes easy to understand at a glance. Use DeciMate SPL to keep an eye on loudness trends, spot peaks, document sessions, and share live readings across your local network for dashboards and creative workflows. Features: - Live approximate SPL monitoring - Clear circular input meter with threshold-based visual feedback - Manual calibration offset and quick “Match Reference” calibration - Adjustable warning, critical, and peak thresholds - Threshold presets for common monitoring situations - Fast and slow response modes - Session history graph - Detailed session export with live-monitoring values - Companion animation with fullscreen focus mode - Screen-awake fullscreen monitoring for visual use during sessions - DeciMate Live Link for local network JSON streaming - Optional OSC streaming for dashboards, tools, and live-production workflows Important: DeciMate SPL uses the device microphone for practical monitoring. It is not a certified Class 1 or Class 2 sound level meter and should not be used as the sole tool for legal, workplace-safety, or compliance measurements.

About

Spectrum Analyzer

Visualize sound frequencies, waveforms, and spectral activity in real-time using your device's microphone. Analyze audio for tuning, testing, music, or exploring ambient sounds with clear visual representations.

Highlights
  • Real-time audio spectrum analysis
  • FFT frequency analysis
  • Live spectrogram visualization
  • Audio waveform display
  • Frequency and amplitude monitoring
  • Microphone-based sound analysis
Features
Read full description

See sound in real time with Spectrum Analyzer: Audio RTA, a powerful audio analysis tool for visualizing frequencies, waveforms and spectral activity through your device’s microphone. Whether you are tuning speakers, examining music, testing audio equipment, identifying troublesome frequencies or simply exploring the sounds around you, the app gives you a clear and responsive view of your audio signal. REAL-TIME AUDIO SPECTRUM ANALYSIS View the frequency content of live sound as it happens. The spectrum analyzer separates the incoming audio into frequency components, making it easier to identify peaks, harmonics, resonance and changes across the sound spectrum. FFT FREQUENCY ANALYZER Use Fast Fourier Transform analysis to examine the frequencies present in music, speech, instruments, speakers and environmental sound. Follow frequency peaks and observe how the signal changes over time. LIVE SPECTROGRAM Turn sound into an easy-to-read visual frequency map. The spectrogram displays how frequency intensity develops over time, helping you recognize tones, harmonics, patterns and transient sounds. AUDIO WAVEFORM DISPLAY Watch the shape and amplitude of the microphone signal in real time. The waveform view provides a direct visual representation of changes in volume and signal behaviour. RTA FOR AUDIO TESTING Use your iPhone or iPad as a convenient real-time analyzer for: • Speaker and stereo testing • Room and acoustic checks • Music and instrument analysis • Identifying frequency peaks • Monitoring background noise • Examining voices and sound effects • Audio equipment testing • Learning about sound and frequencies UNDERSTAND THE SOUNDS AROUND YOU Spectrum Analyzer: Audio RTA helps reveal details that are difficult to recognize by listening alone. Observe low, mid and high frequencies, compare different sounds and discover how every audio source creates its own spectral pattern. DESIGNED FOR QUICK, CLEAR ANALYSIS The responsive interface makes it easy to move between audio analysis views and focus on the information you need. Use it for technical checks, music production, education, acoustic experiments or everyday sound exploration. KEY FEATURES • Real-time audio spectrum analyzer • FFT frequency analysis • Live spectrogram visualization • Audio waveform display • Frequency and amplitude monitoring • Microphone-based sound analysis • Clear visual representation of audio signals • Support for both portrait and landscape use • Useful for speakers, music, voices and environmental noise From simple sound experiments to detailed frequency inspection, Spectrum Analyzer: Audio RTA puts a capable audio visualization tool in your pocket. Download the app and start seeing the frequencies hidden inside every sound. Privacy Policy: https://www.devtreelabs.com/privacy Terms of Use. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

DeciMate SPL4 screens
Spectrum Analyzer4 screens

Verdict

The call

The clearest difference is in-app purchases: DeciMate SPL at none against Spectrum Analyzer's 2. On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Spectrum Analyzer sells 2 in-app purchases, starting at $4.99 per 7 days. DeciMate SPL asks for nothing beyond the download.

Scorecard1 real difference · 8 level
DeciMate SPL versus Spectrum Analyzer: the parameters behind the verdict, then further details
ParameterDeciMate SPLSpectrum Analyzer
PriceFreeFree
Rating—1.0 (1 ratings) — better
Number of ratings—1 — better
Update frequency—Monthly
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better17.6
Further details — not scored
Size3 MB21 MB
Age rating4+4+
DeveloperDavid Torresbrian koech

In-app purchases

None

DeciMate SPL

No in-app purchases

2 purchases

Spectrum Analyzer

Subscriptions2
  • pro weekly3 Days trial$4.997 Days
  • pro annual$29.991 Year

Questions

Is DeciMate SPL free?
DeciMate SPL is free to download, with no in-app purchases.
Is Spectrum Analyzer free?
Spectrum Analyzer is free to download, with in-app purchases available.
Do DeciMate SPL or Spectrum Analyzer have ads?
Neither DeciMate SPL nor Spectrum Analyzer shows ads.

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