# Note Recognizer - A 440 Hz — Live Musical Notation

> Analyzes musical pitch frequency and displays corresponding note names. (iPhone/iPad app by Suresh Verma.)

- Source: https://appshunter.io/ios/app/note-recognizer-a-440-hz/id6456845300 (this page in markdown: same URL + `.md`)
- Developer: [Suresh Verma](https://appshunter.io/developer/1207634042)
- Category: Entertainment
- Price: $1.99 (on sale, was $4.99)
- Rating: 1.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 4 MB
- Languages: American English
- Released: 2023-08-07
- Data updated: 2026-08-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/note-recognizer-a-440-hz/id6456845300/reviews.md

## What is Note Recognizer?

The Note Recognizer - A 440 Hz easily analyses the pitch frequency that you sing or play, and gives the corresponding note name quickly and accurately. Works great for vocals, piano, guitar, violin, and more!

This 440 Hz tone is A in the musical scale. This tone is good for tuning or keeping a reference to A. The Sine wave has no overtones so it is sometime called pure as it is only the fundamental frequency.

Play your musical idea on an instrument and have it transformed to musical notation.

Your microphone detects your voice or instrument, and then converts that sound into an electrical signal. That signal is then interpreted by our app and the frequency of that sound is deciphered and displayed along with the corresponding musical note.

Very useful for singers who need to find the right starting note of a song. Or if you want to know the key of a song; sing the tonic, and you get the note name of the key.

What instruments will this pitch detector work with? - Our Note Recognizer app will work with most instruments and vocals.

Recognition range: E2 - G7. Whistling above this range wil not be recognized.

The quality of the microphone of your device may influence the performance of the app. If you looking for vocal training and do you have little or no singing experience or voice training? Then we recommend Note Recognizer.

## Key features

- Pitch frequency analysis
- Note name display
- Works with vocals and instruments
- Identifies song keys
- Supports vocal training
- 440 Hz A tone reference

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/note-recognizer-a-440-hz/id6456845300/reviews.md

### 1/5 — Severely sensitive

*2024-11-16*

It’s way too sensitive and there’s doesn’t seem to be a way to turn the sensitivity down. It picks up every single vibration and the needle just continuously dances around making it very difficult to actually tune

## Frequently asked questions about Note Recognizer

### What instruments can Note Recognizer detect pitches from?

Note Recognizer works with most instruments and vocals, including piano, guitar, and violin. The recognition range is E2 - G7. Whistling above this range will not be recognized.

### How accurate is Note Recognizer?

The app quickly and accurately analyzes pitch frequency. However, the quality of your device's microphone may influence performance.

### Is Note Recognizer good for beginners?

Yes, if you have little or no singing experience or voice training, Note Recognizer is recommended for vocal training purposes.

### What is the 440 Hz tone used for?

The 440 Hz tone is the A in the musical scale and is useful for tuning or keeping a reference to A. It's a pure sine wave representing the fundamental frequency.

### Can Note Recognizer help me find the key of a song?

Yes, you can sing the tonic of a song, and the app will display the note name of the key.

### What devices does Note Recognizer support?

Note Recognizer is available for iPhone, iPad, and iPod.

### How much does Note Recognizer cost?

Note Recognizer is a paid app priced at $1.99.

### Does Note Recognizer have ads?

No, Note Recognizer does not contain advertisements.

## Version history (last 1 release)

### 1.0 — 2023-08-07

No release notes.

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## More apps by Suresh Verma

- [Video Cutter -Trim & Cut Video](https://appshunter.io/ios/app/video-cutter-trim-and-cut-video/id1213326749)
- [Ringtone Maker - Easy Ringtone](https://appshunter.io/ios/app/ringtone-maker-easy-ringtone/id1216602935)
- [Music Cutter - Cut Mp3 Music](https://appshunter.io/ios/app/music-cutter-cut-mp3-music/id1219416812)
- [Vid2MP3-Video to MP3 Converter](https://appshunter.io/ios/app/vid2mp3-video-to-mp3-converter/id1229580090)
- [MP3 Audio Converter](https://appshunter.io/ios/app/mp3-audio-converter/id1239386287)
- [Music Cutter - Speed Changer](https://appshunter.io/ios/app/music-cutter-speed-changer/id1457722420)

All apps by Suresh Verma: https://appshunter.io/developer/1207634042

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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 2026-08-24.*