# Filter Calculator: Electronics — RC, RL, Butterworth, Chebyshev

> Electronic filter design tool for RC, RL, RLC, and crossovers. (iPhone/iPad app by Anas Abubakar.)

- Source: https://appshunter.io/ios/app/filter-calculator-electronics/id6754560517 (this page in markdown: same URL + `.md`)
- Developer: [Anas Abubakar](https://appshunter.io/developer/1581534101)
- Category: Education, Reference
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 53 MB
- Languages: American English
- Released: 2025-11-12
- Data updated: 2026-10-13
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/filter-calculator-electronics/id6754560517/reviews.md

## What is Filter Calculator?

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.

## Key features

- Design RC, RL, and RLC filters (2nd-7th order)
- Butterworth & Chebyshev alignments
- Passive crossover calculations
- Twin-T notch filter design
- Instant component values
- Bode insights
- Offline-friendly dark mode UI

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Upgrade to Pro | $2.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/filter-calculator-electronics/id6754560517/reviews.md

### 5/5 — 好好好哈

*2026-04-08*

好好好哈我去

## Frequently asked questions about Filter Calculator

### What types of filters can electronics filter toolkit design?

electronics filter toolkit can design RC and RL filters (low-pass/high-pass, 2nd-7th order), RLC filters (band-pass/band-reject/notch), and passive crossovers (2-way/3-way). It supports Butterworth and Chebyshev alignments.

### Is electronics filter toolkit suitable for beginners?

Yes, it is built for engineers, hobbyists, and students. It simplifies the process of turning specifications into component values, aiding learning and prototyping.

### Does electronics filter toolkit work offline?

Yes, the application features an offline-friendly UI, making it convenient for use in environments without constant internet access.

### What is the age rating for electronics filter toolkit?

electronics filter toolkit has an age rating of 4+, making it suitable for a wide range of users.

### On which devices can I use electronics filter toolkit?

electronics filter toolkit is available for iPhone, iPad, and iPod devices.

### How often is electronics filter toolkit updated?

The app was last updated on 2026-07-27, indicating ongoing development and support.

### Does electronics filter toolkit have ads?

Yes, electronics filter toolkit contains advertisements.

### What are the in-app purchase options for electronics filter toolkit?

While the app is free to download and use, it offers in-app purchases, though specific details on these options are not provided in the description.

## Version history (last 3 releases)

### 1.2 — 2026-09-29

Added bi quad filter, designing active Sallen-key filter from specifications

### 1.1 — 2026-07-27

improved the user interface, added more calculators

### 1.0 — 2025-11-12

No release notes.

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## More apps by Anas Abubakar

- [Electronics Tools & Calc Pro](https://appshunter.io/ios/app/electronics-tools-and-calc-pro/id1581668963)
- [Electronics Tools & Calculator](https://appshunter.io/ios/app/electronics-tools-and-calculator/id1581885136)
- [Electronics Circuit Calc Pro](https://appshunter.io/ios/app/electronics-circuit-calc-pro/id1583600520)
- [Electronic Circuit Calculator](https://appshunter.io/ios/app/electronic-circuit-calculator/id1583972990)
- [Fisika - Physics app](https://appshunter.io/ios/app/fisika-physics-app/id1586848633)
- [PhysicsLab - Calculator lite](https://appshunter.io/ios/app/physicslab-calculator-lite/id1587705682)

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

## Related topics

[analog filter](https://appshunter.io/ios/topics/analog-filter)

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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 2026-10-13.*