# SonicPro: Sound Level Meter — Sound level meter & evidence

> Sound level meter & evidence (iPhone/iPad app by 仕华 罗.)

- Source: https://appshunter.io/ios/app/sonicpro-sound-level-meter/id6823545377 (this page in markdown: same URL + `.md`)
- Developer: [仕华 罗](https://appshunter.io/developer/1066728652)
- Category: Utilities, Health & Fitness
- Price: $9.99
- Age rating: 4+
- Requires: iOS 17 · 2 MB
- Languages: American English, Arabic, French (France), German (Germany), Hindi, Japanese, Korean, Russian, Chinese (Simplified, China)
- Released: 2026-10-19
- Data updated: 2026-10-24

## What is SonicPro?

SonicPro turns your iPhone into a handheld sound level meter that keeps evidence. Open it, and the number in front of you is the sound around you.

[Real-time Sound Level]
Instant dBA, dBC and dBZ level with Leq, peak and min / max, plus a moving 10-second trend. Choose Fast, Slow or Impulse time weighting, and A, C or Z frequency weighting, the way a professional meter works. Overload and under-range are flagged so you know when a reading can be trusted.

[Spectrum and Octave Analysis]
A 72-band FFT spectrum with the dominant frequency marked, a scrolling spectrogram, and 1/1 and 1/3 octave band levels from 31.5 Hz to 16 kHz. You see not only how loud it is, but what it sounds like — which is what tells a fan from a drill from traffic.

[Calibration]
Fine-tune with a ±12 dB offset, or calibrate against a 94 dB reference source in about three seconds. Every session records the calibration it was measured with.

[Noise Dose]
Follow today's exposure using OSHA (90 dBA / 8 h, 5 dB exchange rate) or NIOSH (85 dBA / 8 h, 3 dB exchange rate) criteria: dose percentage, TWA, and allowed versus actual time at each level. The dose resets itself every day.

[Evidence Camera]
Take photos and 1080p video with the reading, timestamp, device model, location, average / min / max and the last 10-second curve burned into the frame. Drag the curve wherever you want it before you shoot. Ultra-wide, wide and telephoto lenses, a torch for dark corners, and everything lands in the built-in album ready to share.

[Recording, Playback and Export]
Save a session as metrics plus audio, play it back later, and re-analyse the file offline: spectrogram, average spectrum and octave levels. Export the per-second level curve as CSV, or the recording itself as m4a. Add a site photo or a location to any record afterwards.

[Alerts and Appearance]
Set a threshold and get a warning when levels stay above it. Light and dark appearance, and a choice of 9 languages: Simplified Chinese, English, Japanese, Korean, German, French, Russian, Arabic and Hindi.

[Private by Design]
No account, no sign-up, no ads and no tracking. Everything is measured, analysed and stored on your device.

—
SonicPro is a one-time purchase. There is no subscription and there are no in-app purchases.

Important: SonicPro measures with the built-in microphone and is not a certified measuring instrument. Between 30 and 85 dB, readings are typically within 2–3 dB of a professional sound level meter; above 100 dB the microphone may distort. Use it for screening and documentation, not as the basis for legal or compliance decisions.

## Is SonicPro safe?

Not enough ratings yet to assess SonicPro.

## Is SonicPro legit?

SonicPro: Sound Level Meter appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for SonicPro is 75 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0.0 — 2026-10-20

No release notes.

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All apps by 仕华 罗: https://appshunter.io/developer/1066728652

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-24.*