# FQC - Frequency Counter — Measure frequencies & notes

> Measure frequencies & notes (iPhone/iPad app by Andrew Hazon.)

- Source: https://appshunter.io/ios/app/fqc-frequency-counter/id6780738150 (this page in markdown: same URL + `.md`)
- Developer: [Andrew Hazon](https://appshunter.io/developer/1878864238)
- Category: Utilities, Music
- Price: Free
- Age rating: 4+
- Requires: iOS 17.6 · 5 MB
- Languages: American English
- Released: 2026-06-18
- Data updated: 2026-07-17
- User reviews in markdown: https://appshunter.io/ios/app/fqc-frequency-counter/id6780738150/reviews.md

## What is FQC?

FQC is a real-time audio frequency counter for iPhone and iPad..

Measure audio frequencies using your iPhone and iPad's built-in microphone. FQC displays frequency in Hz or kHz, identifies musical notes, and provides signal level monitoring in a simple, easy-to-read interface.

Features:

• Real-time frequency measurement
• Musical note identification
• High and Low Frequency detection modes
• One Shot capture mode
• Automatic noise floor calibration
• Signal level meter
• Frequency display in Hz and KHz
• Simple, distraction-free interface

The Low Frequency mode is optimized for bass notes, speakers, motors, and other low-frequency signals, while High Frequency mode provides fast response for general audio measurements.

FQC performs all frequency analysis locally on your device.

No accounts.
No subscriptions.
No advertising.
No tracking.

Designed for hobbyists, musicians, audio enthusiasts, electronics experimenters, and anyone needing a simple frequency measurement tool.


## Version history (last 3 releases)

### 1.0.2 — 2026-07-14

This release contains minor maintenance updates

### 1.0.1 — 2026-07-07

Corrected the App Store description to accurately reflect supported devices. No changes have been made to the app’s functionality.

### 1.0 — 2026-06-18

No release notes.

## More apps by Andrew Hazon

- [BP Insight](https://appshunter.io/ios/app/bp-insight/id6759475925)
- [SubScripto](https://appshunter.io/ios/app/subscripto/id6759934740)
- [WarrantySafe: Warranty Tracker](https://appshunter.io/ios/app/warrantysafe-warranty-tracker/id6760275723)
- [CanvasCast](https://appshunter.io/ios/app/canvascast/id6761245002)

All apps by Andrew Hazon: https://appshunter.io/developer/1878864238

## Related topics

[hertz frequency measure](https://appshunter.io/ios/topics/hertz-frequency-measure)

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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 2026-07-17.*