# Filter workbench — Filter design with ease

> Filter design with ease (iPhone/iPad app by Anas Abubakar.)

- Source: https://appshunter.io/ios/app/filter-workbench/id6753708103 (this page in markdown: same URL + `.md`)
- Developer: [Anas Abubakar](https://appshunter.io/developer/1581534101)
- Category: Education, Productivity
- Price: $2.99
- Age rating: 4+
- Requires: iOS 13.0 · 17 MB
- Languages: American English
- Released: 2025-11-03
- Data updated: 2026-09-09
- User reviews in markdown: https://appshunter.io/ios/app/filter-workbench/id6753708103/reviews.md

## What is Filter workbench?

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.


## Version history (last 1 release)

### 1.0 — 2025-11-04

No release notes.

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## More apps by Anas Abubakar

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All apps by Anas Abubakar: https://appshunter.io/developer/1581534101

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-09.*