RTA01

Real-Time Spectrum Analyzer

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

Real-time spectrum analyzer for audio engineers with 31/63/127-band display, A/C/Z weighting, and high-precision peak detection. Ad-free, with optional tips. RTA is a pocket-sized real-time spectrum analyzer built for audio engineers and PA operators. FEATURES - Switchable resolution: 31, 63, or 127 bands - A/C/Z frequency weighting (IEC 61672-1 compliant) - High-precision peak detection using raw FFT data with parabolic interpolation - Peak hold - Calibration offset (for matching a reference measurement device) - Tap any band to see its exact frequency and dB level - Upside-down mode for inverted mounting - Multiple color themes (Black / White / Neon / B&W) NO ADS, NO PRESSURE This app has no interruptive ads. If you find it useful, you can support development with an optional tip. Handy for quick frequency balance checks and finding feedback points in the field. Note: readings are for relative reference only and are not guaranteed to match a calibrated measurement instrument.

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The developer, Shunsuke Takasu, 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

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    Accessibility

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    Information

    Seller
    • Shunsuke Takasu
    Size
    • 2.8 MB
    Category
    • Utilities
    Compatibility
    Requires iOS 17.6 or later.
    • iPhone
      Requires iOS 17.6 or later.
    • iPad
      Requires iPadOS 17.6 or later.
    • Mac
      Requires macOS 14.6 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.3 or later.
    Languages
    • English and Japanese
    Age Rating
    4+
    In-App Purchases
    Yes
    • Tip - XLR Connector $6.99
    • A roll of gaffer tape $1.99
    • A roll of vinyl tape $0.99
    • Learn More
    Copyright
    • © 2026 Shunsuke Takasu
  • Privacy Policy

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