NoiseGuard - Decibel Meter

Accurate Sound Meter & Guard

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Accurately measure decibels, monitor nighttime sleep disturbances, record audio evidence, and export official PDF reports for dispute resolution. Download now! Woken up by stomping upstairs? Loud neighbors, barking dogs, or ongoing construction ruining your peace of mind? Complaining to landlords, HOAs, or building management often gets dismissed without objective proof. NoiseGuard is your dedicated noise monitoring and evidence logging station. Turn your iPhone into a reliable decibel sound meter and transform subjective complaints into concrete, timestamped evidence. --- KEY FEATURES Real-Time Decibel Meter • Precise environmental sound level detection with real-time waveform visualization. • Clear 3-tier comfort indicators (Safe, Moderate, Loud) to evaluate noise at a glance. Bedside Night Guard • Set custom decibel thresholds before going to bed. • Overnight monitoring automatically logs timestamps, durations, and peak decibels when noise exceeds your threshold. • Minimalist OLED nightstand clock face that stays awake without disturbing your sleep. Audio Evidence Recording • Record ambient sound while tracking synchronized decibel levels. • Free tier supports 30s clips; upgrade to Pro for up to 180s (3 minutes) continuous recording. • Intuitive timeline playback with 5s skip buttons and variable playback speeds. Incident Timeline & Tagging • Organize noise incidents with one-tap tags: Stomping, Construction, Loud TV, Barking, etc. • Add custom notes to reconstruct past noise events with ease. 24-Hour Trend Analytics • Comprehensive 24-hour distribution charts highlight frequent disruption periods, including designated night quiet hours. • Track cumulative incident count, total duration, and historical maximum decibels. Official PDF Report Export • Generate clean, objective A4 PDF noise monitoring reports in one tap. • Print or share via AirDrop, Email, or Messages to communicate with landlords or property managers with confidence. 100% On-Device & Private • All audio processing is performed locally on your device. • No recordings are ever uploaded to cloud servers. --- NoiseGuard Pro (One-Time Purchase Lifetime Access) • Unlock 180s extended audio evidence recording • 100% ad-free experience • Unlimited high-resolution PDF report exports • High-precision acoustic DSP vector processing --- Take control of your living environment today. Download NoiseGuard and restore your quiet life!

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

The developer, Chia-Chun Hsieh, 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 Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Identifiers

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Identifiers

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • Chia-Chun Hsieh
Size
  • 7.5 MB
Category
  • Lifestyle
Compatibility
Requires iOS 18.0 or later.
  • iPhone
    Requires iOS 18.0 or later.
  • iPad
    Requires iPadOS 18.0 or later.
  • Mac
    Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 2.0 or later.
Languages
English and 9 more
  • English, French, German, Italian, Japanese, Korean, Portuguese, Simplified Chinese, Spanish, Traditional Chinese
Age Rating
4+
In-App Purchases
Yes
Copyright
  • © 2026 Shrimp Studio
  • Developer Website
  • Privacy Policy

    • More by Chia-Chun Hsieh