Stroboscope - Flash Meter

Accurate Strobe & RPM Tool

Only for iPhone

Free · Designed for iPhone

iPhone

Turn your iPhone into a precision stroboscope. Adjust frequency from 0.5-100Hz, control duty cycle, find harmonics, and measure RPM — all in one powerful tool. Turn your iPhone into a professional stroboscope with precise frequency control. FEATURES: • Adjustable frequency range from 0.5 Hz to 100 Hz • Three duty cycle modes: 10%, 25%, and 50% • ×2 and ÷2 buttons for quick harmonic frequency finding • RPM presets for common motor and fan speeds • Real-time display of period, timing, and flashes per minute • Clean, intuitive interface designed for fieldwork APPLICATIONS: • Inspect rotating machinery and motors • Measure fan blade and propeller RPM • Freeze apparent motion for visual inspection • Verify belt and gear synchronization • Educational physics demonstrations Whether you are a maintenance technician, engineer, or hobbyist, this stroboscope app gives you the precision tools you need for motion analysis and rotational speed measurement right in your pocket.

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The developer, Kyu-Hee Jang, 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
    • Usage Data

  • Data Not Linked to You

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

    • Identifiers
    • Usage Data
    • Diagnostics

Privacy practices may vary based, for example, 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

  • Size
    • 34.5 MB
  • Category
    • Utilities
  • Compatibility
    Requires iOS 15.1 or later.
    • iPhone
      Requires iOS 15.1 or later.
    • iPod touch
      Requires iOS 15.1 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
  • Languages
    • English
  • Age Rating
    18+
  • Provider
    규희 장
    • 규희 장 has identified itself as a trader for this app and confirmed that this product or service complies with European Union law.
    • Address
      South Korea
      Gyeonggi-do
      Bucheon-si
      80 Okgil-ro, Sosa-gu
      603-dong 1802-ho
      Okgil Breeze Hill
      14786
    • Phone Number
      +82 1090867315
    • Email
      wkdrb2100@gmail.com
  • Copyright
    • © Copyright 2026 Simon Jang. All rights reserved.
  • Developer Website
  • Privacy Policy

    • More by Kyu-Hee Jang