DeciMate SPL vs Sound Level Meter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DeciMate SPL
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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.
Sound Level Meter
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Sono is a clean, easy-to-read sound level meter that turns your phone into a real-time decibel meter. Measure how loud anything is, right now, in dB(A). No sign-up, no login, fully offline. Checking a noisy restaurant, a concert, your AC or PC fans, road and traffic noise, a snoring partner, a baby's room, a workplace or machine shop, or a neighbour's music? Sono shows the sound pressure level (SPL) instantly with a clear live reading, an animated dial, and a scrolling graph. Why Sono • Fully offline. No account, no login. Your audio is never recorded or stored and never leaves your device. • Live dB(A), min / average / max, real-time graph, history and calibration, included. • Honest readings. A per-device calibration offset lets you trim the reading to match a reference. Features • Live decibel meter with a large, easy-to-read dB number • A, C and Z frequency weighting: dB(A), dB(C), dB(Z) • Min, average and max for every session • Real-time scrolling graph, from 30 seconds up to 30 minutes • Peak hold marker on the dial • Session timer with pause and resume • Calibration offset to match a reference level • Three gauge styles: circular, semicircular, and analog needle • Reference guide: how loud common sounds are, from a whisper to a jet • Save measurements with labels and notes, then browse your history • Add timestamped marks while measuring • Dark mode that remembers your choice, plus optional haptics • Lightweight and fast, opens straight to a live reading How Loud Is It? Quiet library ~30–40 dB · normal conversation ~60 dB · busy traffic ~70–80 dB · lawn mower ~90 dB · nightclub ~100 dB · rock concert ~110 dB. Sono labels the live reading against everyday sources so the numbers actually mean something. Great For • Checking whether a venue, restaurant or workplace is too loud • Settling neighbour noise disputes • Calibrating speakers, home theatre and audio gear • Measuring appliances, fans, engines and machinery • Anyone curious how loud their world really is A Note on Accuracy: Phone microphones are tuned for voice and can clip at very high volumes, so readings are approximate. Sono is a reference tool and is not a replacement for a certified sound level meter (SLM). Use the calibration offset to align Sono with a known reference for more reliable results. Sono is not a medical device and does not diagnose, treat, cure, or prevent any medical condition. Not a certified sound level meter, for reference only. Sono: the simple, offline decibel meter.
Screenshots
Verdict
The clearest difference is ads: DeciMate SPL at none against Sound Level Meter's shown. On price, in-app purchases, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | DeciMate SPL | Sound Level Meter |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 11 days |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 3 MB | 8 MB |
| Age rating | 4+ | 17+ |
| Developer | David Torres | Hritik Arthur |
In-app purchases
DeciMate SPL
No in-app purchases
Sound Level Meter
No in-app purchases









