# Sound Level Meter - Decilog — Live meter, PDF sound reports

> Live meter, PDF sound reports (iPhone/iPad app by junpyo ko.)

- Source: https://appshunter.io/ios/app/sound-level-meter-decilog/id6817147170 (this page in markdown: same URL + `.md`)
- Developer: [junpyo ko](https://appshunter.io/developer/6814467114)
- Category: Utilities
- Price: Free with in-app purchases
- Age rating: 12+
- Requires: iOS 15.0 · 15 MB
- Languages: British English, Arabic, Bangla, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French (France) and 34 more
- Released: 2026-11-03
- Data updated: 2026-11-06

## What is Sound Level Meter?

Measure everyday sound, then keep a clear record of the session.

Decilog shows estimated sound levels from your iPhone microphone on a live meter and chart. Check the current reading, average, peak and duration, then stop to see your report.

FREE FEATURES
• Live measurement and a sound trend graph
• Basic reports without watching an advertisement
• PDF, JPG and PNG report export through the iOS share sheet
• Calibration adjustment for comparison with a reference meter
• Optional audio recording with MP3 export, up to five minutes
• 50 language and region options; no app account required

LIFETIME PRO
One Apple in-app purchase removes advertising and unlocks expanded sample analysis, four additional instrument skins, Focus and Timed modes, Hold display, a reference level and keep-screen-awake controls. There is no subscription. Apple's localized price is shown before purchase. Restore Purchases is available in the Pro sheet.

An optional rewarded advertisement can grant one hour of Pro on this device. Availability and consent requirements vary by region. If no ad is available, measurement and basic reports still work.

PRIVACY AND ACCURACY
Microphone analysis runs on your device. Recording is off by default; audio is held in app memory and exported only when you choose. Microphone audio and measurement results are not sent to our servers or the advertising SDK. Google AdMob and its consent SDK may process advertising data as described in the privacy policy.

Readings are microphone estimates and vary by device, surroundings and calibration. Decilog is not a certified sound level meter and does not determine hearing safety or provide medical, legal or occupational assessments.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Decilog Lifetime Pro | $0.99 | one-time |


## Is Sound Level Meter safe?

Not enough ratings yet to assess Sound Level Meter.

## Is Sound Level Meter legit?

Sound Level Meter - Decilog has limited verification signals. The AppsHunter Legitimacy Score for Sound Level Meter is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-11-03

No release notes.

## More apps by junpyo ko

- [파일 변환·문서 편집: Coverton](https://appshunter.io/ios/app/coverton/id6814466902)
- [Scientific Calculator · Eqnora](https://appshunter.io/ios/app/scientific-calculator-eqnora/id6816647710)

All apps by junpyo ko: https://appshunter.io/developer/6814467114

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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 2026-11-06.*