AudioEngineerKit: SPL & RTA

Pro SPL Meter, RTA & More

Free · In‑App Purchases

SPL Meter & RTA is a precision measurement toolkit built for sound engineers working on site. Free • Real-time SPL (sound pressure level) meter — A/C weighting, dB • 31-band RTA (real-time analyzer) — ISO 266 standard center frequencies • Microphone calibration • Room Mode Calculator Unlock Pro (one-time purchase) • LUFS loudness meter (BS.1770-4, Integrated/Short-term, target LU delta) • RT60 reverberation time analysis • Delay Finder — ESS sweep-based speaker alignment distance/time • Polarity Checker — passive & active modes, A/B speaker comparison • THD+N Analyzer • Loopback Test — pink-noise RTA-style report • External microphone support • SPL threshold alerts & measurement history (session log) • Dashboard view (SPL + RTA at a glance) A universal app for iPhone, iPad, and Mac. Runs entirely on-device with no internet connection required — no accounts, no ads, no analytics, so your privacy stays yours.

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Added a Noise Exposure Report — see your session's average, peak, and percentile levels (LA10/LA50/LA90) at a glance, then export as PDF or CSV, or save straight to disk on Mac. The live LAeq card and session history are now free for everyone.

Version 1.0.1

The developer, HYO SEOP LEE, 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.

    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
    • HYO SEOP LEE
    Size
    • 2.3 MB
    Category
    • Music
    Compatibility
    Requires iOS 26.5 or later.
    • iPhone
      Requires iOS 26.5 or later.
    • iPad
      Requires iPadOS 26.5 or later.
    • Mac
      Requires macOS 26.5 or later.
    • Apple Vision
      Requires visionOS 26.5 or later.
    Languages
    English and 4 more
    • English, Japanese, Korean, Simplified Chinese, Spanish
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • © 2026이효섭
  • Developer Website
  • Privacy Policy

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