OnBoardGUARD™ vs Decibel Meter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OnBoardGUARD™
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Mobile app for displaying and managing your Fidelak tracking devices.
Decibel Meter
This tool transforms your iPhone into a real-time sound level meter. It measures and displays environmental noise in decibels, helping you monitor sound at home, work, or outdoors. Protect your hearing by detecting loud noises and staying aware of your sound environment.
- Real-time decibel measurement
- Dynamic graph display
- Min/Max/Average sound levels
- Measuring timer
- Pause and Reset buttons
- Noise pollution checks
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Decibel Meter is a powerful and easy-to-use sound level meter (also known as dB meter, SPL meter, or noise detector) that turns your iPhone into a real-time sound measuring tool. Using your device’s built-in microphone, Decibel Meter detects and displays environmental noise levels in decibels (dB). Whether you're monitoring noise at home, measuring sound at work, or checking noise pollution outdoors – this app provides accurate, real-time readings. Key Features: - Real-time decibel measurement with dynamic graph - Sound level display: Min / Max / Average - Measuring timer included - Easy-to-use Pause and Reset buttons - Useful for sound tests, noise pollution checks, and SPL monitoring Use Cases: - Monitor home or work noise - Measure traffic, music, or construction sound - Perform noise tests for health and safety - Detect sound levels in quiet or noisy environments Sound measurements depend on your device’s microphone and may vary from professional SPL meters. Protect your ears and your health. Use Decibel Meter to detect loud noise and stay in control of your sound environment. Download now and start measuring sound today! Privacy Policy: https://www.getpaoapps.com/privacy Terms of Use: https://www.getpaoapps.com/terms
Screenshots
Verdict
The clearest difference is in-app purchases: OnBoardGUARD™ at none against Decibel Meter's 3. OnBoardGUARD™ also leads on device support (3 vs 1) and iOS requirement (14.0.0 vs 16.0). Decibel Meter's advantage is update cadence (monthly vs every 2 months). On price and ads 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 Meter sells 3 in-app purchases, starting at $2.99 per 7 days. OnBoardGUARD™ asks for nothing beyond the download.
OnBoardGUARD™ ships an update every 2 months, Decibel Meter monthly. The most recent releases landed on October 7, 2026 and October 21, 2026 respectively.
| Parameter | OnBoardGUARD™ | Decibel Meter |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.7 (54 ratings) — better |
| Positive reviews | — | 70.0% of reviews |
| Number of ratings | — | 54 — better |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 14.0.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 37 MB | 176 MB |
| Age rating | 4+ | 4+ |
| Developer | FIDELAK GmbH | PaoApps |
In-app purchases
OnBoardGUARD™
No in-app purchases
Decibel Meter
- Weekly Access with Trial3 Days trial$2.997 Days
- Weekly Access$2.997 Days
- Yearly Access$17.991 Year
Questions
Is OnBoardGUARD™ free?
Is Decibel Meter free?
Do OnBoardGUARD™ or Decibel Meter have ads?
Which is updated more often, OnBoardGUARD™ or Decibel Meter?
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