Decibel vs OneSpace Secure
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Decibel
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.
- 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
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Decibel turns your device into a powerful sound level meter without any extra hardware. Measure ambient noise in real time, monitor sound levels (dB), and explore frequencies with the built-in Spectrum Analyzer. Capture reliable sound and noise data wherever you are. Designed for casual users, audio enthusiasts, and sound engineers, Decibel works as a portable sound meter for quick sound checks or deeper audio analysis. Use it to easily check noise levels, test room acoustics, monitor workplace noise, or fine-tune audio equipment. Decibel has various advanced features, including saving and exporting noise measurement data, live sound level overlays for photos and videos, and exporting data to the Health app to track noise exposure over time. “The best way to meter sound levels” — AppAdvice SLEEP TRACKING AND SOUND RECOGNITION Decibel’s sleep tracking and smart sound recognition help you understand your sleep environment and nighttime noise. While sleep tracking is active, the app can detect common sleep sounds such as snoring, coughing, talking, and other household or environmental noise that may affect sleep quality. Each detected sound appears on a detailed sleep timeline, so you can see exactly when disruptions occurred and play back the related audio. This makes it easier to identify snoring patterns, sleep disturbances, and noise events that impact your rest. All sleep sound recognition and audio analysis are performed entirely on your device using advanced on-device machine learning. Recordings stay private, are processed locally, and never leave your device. KEY FEATURES - Visualize ambient sound levels and decibel (dB) readings in real time - Sync with the Health app to track and export noise exposure data - Add live sound level overlays to photos and videos - Save sound measurements with location data and custom labels - Record, store, export, and play back sound measurements - Export sound and noise data in CSV or audio formats SPECTRUM ANALYZER - Integrated Spectrum Analyzer with FFT and spectrogram modes - Multiple FFT sizes up to 16,384 points with selectable window functions - Flexible visualization modes and graph styles - Octave Band Real-Time Analyzer (RTA) for detailed frequency analysis EXTERNAL MICROPHONES AND CALIBRATION - Support for external microphones - Calibrate connected microphones directly in the app - Create and manage custom profiles for different microphones REPORTING AND EXPORT - Generate detailed noise measurement reports, including LAeq values - Batch export multiple measurements in supported formats Decibel app is not a replacement for professional devices and should be used for personal purposes only. By using this app, you acknowledge and agree that the developers and publishers are not liable for any decisions made based on the information provided by the app. SUBSCRIPTIONS Decibel offers optional subscriptions that unlock advanced tools and ongoing feature enhancements. With a subscription, you get access to an expanding set of professional Spectrum Analyzer features, advanced sound level weighting modes, and continued updates for compatibility with new devices and hardware. Subscriptions also include support for external microphones, unlimited saving and exporting of measurements, batch export tools, and audio and video exports with sound level overlays. Payment will be charged to your Apple account at confirmation of purchase. Subscriptions renew automatically unless auto-renewal is turned off at least 24 hours before the end of the current period. You can manage or disable auto-renewal at any time in your Apple ID account settings. By downloading and using the app, you agree to the following: Terms of Use: https://www.iubenda.com/terms-and-conditions/94359518 Privacy Policy: https://www.iubenda.com/privacy-policy/94359518 Disclaimer: http://dbmeterpro.com/disclaimer.html Questions or feedback? Contact us at support@decibelpro.app
OneSpace Secure
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.
- End-to-end encrypted file sharing
- Secure file links via email
- Password protection for shared links
- Contact management for secure sharing
- Cross-platform compatibility
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OneSpace Secure is a file transfer app that sends your files end-to-end encrypted. We cannot read your files. Use it to send files to a client or share photos with family. Send photos, documents and videos to the people in your contacts. OneSpace encrypts each file on your phone or computer before it leaves, and only the contacts you send it to can open it. You can also send to people who don't use OneSpace. They get a link by email or SMS, protected by a password you give them, and open the file in their browser without the app or an account. With Premium, you can send files between your own phone, tablet and computer. One account works on iPhone, iPad, Mac and your other devices. If you bought a licence on our website, create your account in the app and then follow the activation steps in your order email. Premium is available in the app as a monthly or yearly subscription. Terms of Service: https://onespacesecurity.com/terms Privacy Policy: https://onespacesecurity.com/privacy
Screenshots
Verdict
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.
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. 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.
| Parameter | Decibel | OneSpace Secure |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (36K ratings) — better | — |
| Positive reviews | 65.8% of reviews — better | 0.0% of reviews |
| Number of ratings | 36K — better | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Apple Watch | iPhone, iPad, iPod, Mac |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 56 MB | 76 MB |
| Age rating | 4+ | 4+ |
| Developer | Vlad Polyanskiy | OneSpace Security B.V. |
Customer experience
Decibel
OneSpace Secure
Bugs and requests
Decibel
Reported bugs
3 issues- App crashes or freezes during use
- Subscription issues and unwanted charges
- Microphone compatibility problems
Requested features
4 requests- 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
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Decibel
- Premium Mode3 Days trial$1.997 Days
- Premium Plus7 Days trial$4.991 Month
- Premium Mode3 Days trial$7.991 Month
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- Premium Mode Subscription$9.991 Month
- Premium Mode7 Days trial$29.991 Year
- dB Meter Pro$4.99
- Noise Dosimeter Pro$9.99
- Decibel Meter Pro$19.99
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- Spectrum Analyzer Pack$24.99
- dB Meter Premium Pack$49.99
OneSpace Secure
- OneSpace Premium Monthly$5.991 Month
- Premium Monthly (welcome)1 Month trial$5.991 Month
- OneSpace Premium Yearly7 Days trial$44.991 Year









