# Decibel vs DS 복합인증

The clearest difference is in-app purchases: DS 복합인증 at none against Decibel's 10. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Decibel sells 10 in-app purchases, starting at $1.99 per 7 days. DS 복합인증 asks for nothing beyond the download.

Decibel ships an update every 2 months, DS 복합인증 every 5 weeks. The most recent releases landed on November 11, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Decibel | DS 복합인증 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (36K ratings)](https://appshunter.io/ios/app/decibel-db-sound-level-meter/id1227650795/reviews)** | — |
| Number of ratings | **36K** | — |
| Positive reviews | 65.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Freemium | — |
| Size | 56 MB | 7 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vlad Polyanskiy](https://appshunter.io/developer/438646985) | [Feelanet Co., Ltd.](https://appshunter.io/developer/1195483590) |

## What reviewers say

### Decibel

[App page](https://appshunter.io/ios/app/decibel-db-sound-level-meter/id1227650795)

Transform your device into a professional sound level meter and audio analyzer. Measure ambient noise, monitor decibel levels, and visualize sound frequencies in real time. It also offers advanced sleep tracking with sound recognition to identify disruptions.

**Highlights:** Real-time decibel (dB) sound level monitoring, Integrated Spectrum Analyzer (FFT, spectrogram), Sleep tracking with sound recognition, Noise exposure data export to Health app, Add sound level overlays to photos/videos, Save, export, and playback sound measurements

**Features:** macOS Compatibility, Family Sharing, Apple Watch app

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Mode | $1.99 | per 7 days |
| Premium Plus | $4.99 | per month |
| Premium Mode | $7.99 | per month |
| Premium Mode Subscription | $9.99 | per month |
| Premium Mode | $29.99 | per year |
| dB Meter Pro | $4.99 | one-time |
| Noise Dosimeter Pro | $9.99 | one-time |
| Decibel Meter Pro | $19.99 | one-time |
| Spectrum Analyzer Pack | $24.99 | one-time |
| dB Meter Premium Pack | $49.99 | one-time |

**What reviewers like**

- 👍 Useful for monitoring noise levels
- 🔍 Accurate for a phone app
- 🔧 Good for calibrating audio equipment
- 💡 Helpful for hearing protection
- 📊 Provides detailed measurements

**What reviewers complain about**

- 💰 Aggressive upselling tactics
- 🔒 Privacy concerns around data collection
- 🕹️ Confusing free vs paid options
- 🔁 Recurring subscription issues
- 🔢 Inconsistent/inaccurate readings

**Reported bugs**

- App crashes or freezes during use
- Subscription issues and unwanted charges
- Microphone compatibility problems

**Requested features**

- Add option to set noise level alerts
- Improve geolocation and recording features
- Allow audio playback while using the app
- Provide more calibration options


### DS 복합인증

[App page](https://appshunter.io/ios/app/ds/id6444264843)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Decibel free?

Decibel is free to download, with in-app purchases available.

### Is DS 복합인증 free?

DS 복합인증 is free to download, with no in-app purchases.

### Do Decibel or DS 복합인증 have ads?

Neither Decibel nor DS 복합인증 shows ads.

### Which is updated more often, Decibel or DS 복합인증?

Decibel ships an update every 2 months, and DS 복합인증 every 5 weeks. Most recently, Decibel was updated on November 11, 2026 and DS 복합인증 on November 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*