# Electrical Filters

> Electrical Filters (iPhone/iPad app by Ali Lopez.)

- Source: https://appshunter.io/ios/app/electrical-filters/id416473314 (this page in markdown: same URL + `.md`)
- Developer: [Ali Lopez](https://appshunter.io/developer/406751495)
- Category: Education, Reference
- Price: Free
- Age rating: 4+
- Requires: iOS 5.1.1 · 7 MB
- Languages: English
- Released: 2011-02-08
- Data updated: 2026-06-10
- User reviews in markdown: https://appshunter.io/ios/app/electrical-filters/id416473314/reviews.md

## What is Electrical Filters?

Electrical Filter Calculator - Butterworth, Chebyshev, InverseChebyshev, Cauer-Elliptical, Bessel-Thompson Filters,
Legendre Filters.
Free version only calculates Low-Pass for all filter types and High-Pass for Butterworth and Chebyshev.


## Version history (last 5 releases)

### 1.62 — 2014-10-04

This app has been updated by Apple to display the Apple Watch app icon.

App is now compatible with iOS 8.

### 1.61 — 2014-09-11

Added Google Ads.
***************************************************************
PLEASE DO NOT INSTALL THIS APP in iOS 8.
NEW iOS8 version coming soon.

### 1.60 — 2012-05-07

update to iOS 5.1
Note: This is the last update for this App. I only plan to support ElectricalFiltersPro in the future.

### 1.52 — 2011-10-27

updated to iOS 5.

### 1.51 — 2011-10-12

Added equations to information page.

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## More apps by Ali Lopez

- [LogicalEffort](https://appshunter.io/ios/app/logicaleffort/id460656113)

All apps by Ali Lopez: https://appshunter.io/developer/406751495

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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 2026-06-10.*