Loudly: Decibel Meter dB
Sound Level Meter & Noise dBA
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Measure noise, protect your hearing, document what matters. IEC 61672 compliant. 100% on-device — no ads, no tracking. Pay once for Pro, yours forever.
Turn your iPhone into a professional-grade sound level meter. Loudly measures noise levels in real time with stunning accuracy, displayed on a beautiful Liquid Glass gauge.
Whether you're checking if your baby's room is quiet enough, documenting noise for a complaint, or protecting your hearing at a concert — Loudly gives you instant, reliable decibel readings.
ACCURATE & PROFESSIONAL
• IEC 61672 compliant audio engine
• A-weighting and C-weighting frequency filters
• Fast, Slow, and Impulse time weighting modes
• Calibration controls for reference-level accuracy
BEAUTIFUL & INTUITIVE
• Large, easy-to-read circular gauge
• Color-coded noise levels: green (safe) → red (dangerous)
• Noise categories with real-world examples: Whisper, Quiet, Moderate, Loud, Very Loud, Dangerous
PRO FEATURES (one-time $2.99 unlock)
• Min / Max / Average statistics
• Session history — track measurements over time
• Peak alerts — get notified when noise exceeds your threshold
• Leq (equivalent continuous sound level) calculation
• Export your readings
PRIVACY FIRST
• No data collection. No ads. No tracking.
• 100% on-device processing — audio is never recorded or stored
• No network requests. Your microphone data stays on your device.
COMMON USES
• Check noise levels at work, home, or events
• Monitor baby room sound levels
• Document noise for complaints or disputes
• Measure environmental noise pollution
• Protect your hearing — know when it's too loud
No subscription. No ads. Pay once for Pro, yours forever.
Ratings & Reviews
Share your measurements with new one-tap share cards in three styles.
Sound exposure now logs to Apple Health (requires Loudly Pro).
Smoother first-launch experience, smarter review prompt, and small fixes.
The developer, Pragmatiq, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Pragmatiq
- Size
- 3.8 MB
- Category
- Utilities
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
Dutch and 8 more
- Dutch, French, German, Italian, Japanese, Korean, Portuguese, Simplified Chinese, Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Loudly Pro $2.99
- Copyright
- © 2026 Pragmatiq