electronics filter toolkit

Passive and Active filter

Free · Designed for iPad

Design RC, RL, and RLC filters up to 7th order in seconds. Butterworth, Chebyshev, band-pass/reject, Twin-T notch, passive crossovers. Design RC, RL, and RLC filters (2nd–7th order) with Butterworth & Chebyshev alignments, passive crossovers, RLC band-pass/reject, and Twin-T notch—enter specs to instantly get component values and quick Bode insights in a clean, offline-friendly, dark-mode UI for lab, classroom, and audio/embedded work. What you can design: -RC & RL filters: low-pass / high-pass, 2nd–7th order -RLC filters: band-pass & band-reject (notch) -Butterworth: maximally flat magnitude -Chebyshev: ripple-tuned sharpness -Twin-T notch: precise mains or tone suppression -Passive crossovers: 2-way/3-way starter calculations Built for engineers, hobbyist and students, it turns specs into trustworthy parts fast—so you can prototype smarter, learn by tweaking, and move from idea to BOM with confidence.

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The developer, Anas Abubakar, 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:

    • Location
    • Identifiers
    • Usage Data

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Location
    • Identifiers
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  • Data Not Linked to You

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

    • Usage Data
    • Diagnostics

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

Accessibility

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Information

  • Size
    • 23 MB
  • Category
    • Education
  • Compatibility
    Requires iOS 13.0 or later.
    • iPhone
      Requires iOS 13.0 or later.
    • iPad
      Requires iPadOS 13.0 or later.
    • iPod touch
      Requires iOS 13.0 or later.
    • Mac
      Requires macOS 11.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
  • Languages
    • English
  • Age Rating
    4+
  • Provider
    Anas Abubakar
    • Anas Abubakar has identified itself as a trader for this app and confirmed that this product or service complies with European Union law.
    • Address
      Filin Samji near jumuat mosque Katsina, Katsina state 820001. NIgeria
      Katsina 820001
      Katsina
      Nigeria
    • Phone Number
      +234 08061356134
    • Email
      anas.saulawa@gmail.com
  • Copyright
    • © Saulawa systems 2025
  • Developer Website
  • Privacy Policy

    • More by Anas Abubakar