# Decibel vs OneSpace Secure

The clearest difference is review sentiment: Decibel at 66% against OneSpace Secure's 0%. Decibel also leads on iOS requirement (13.0 vs 15.0). OneSpace Secure's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Decibel sells 10 in-app purchases, starting at $1.99 per 7 days and OneSpace Secure sells 3 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Decibel ships an update every 2 months, OneSpace Secure every 3 weeks. The most recent releases landed on November 5, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Decibel | OneSpace Secure |
| --- | --- | --- |
| 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** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 56 MB | 76 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod, Apple Watch | iPhone, iPad, iPod, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Vlad Polyanskiy](https://appshunter.io/developer/438646985) | [OneSpace Security B.V.](https://appshunter.io/developer/1651694856) |

## 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


### OneSpace Secure

[App page](https://appshunter.io/ios/app/onespace-secure/id6444031318)

Securely share files with end-to-end encryption. Send files directly to contacts or share links protected by passwords via email. Offers a simple and safe solution for digital file exchange.

**Highlights:** End-to-end encrypted file sharing, Secure file links via email, Password protection for shared links, Contact management for secure sharing, Cross-platform compatibility

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OneSpace Premium Monthly | $5.99 | per month |
| Premium Monthly (welcome) | $5.99 | per month |
| OneSpace Premium Yearly | $44.99 | per year |


## Frequently asked questions

### Is Decibel free?

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

### Is OneSpace Secure free?

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

### Do Decibel or OneSpace Secure have ads?

Neither Decibel nor OneSpace Secure shows ads.

### Which is updated more often, Decibel or OneSpace Secure?

Decibel ships an update every 2 months, and OneSpace Secure every 3 weeks. Most recently, Decibel was updated on November 5, 2026 and OneSpace Secure on November 3, 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.*