# SpectrumView Plus

> Real-time audio spectrogram and spectrum analyzer for iPhone and iPad. (iPhone/iPad app by Oxford Wave Research Ltd..)

- Source: https://appshunter.io/ios/app/spectrumview-plus/id571455198 (this page in markdown: same URL + `.md`)
- Developer: [Oxford Wave Research Ltd.](https://appshunter.io/developer/472662925)
- Category: Education, Utilities
- Price: $7.99
- Rating: 3.70/5 from 15 App Store ratings · 43 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 15 MB
- Languages: American English
- Released: 2012-12-28
- Data updated: 2026-08-25
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/spectrumview-plus/id571455198/reviews.md

## What is SpectrumView Plus?

SPECTRUMVIEW PLUS

Visualise, in real time, the frequencies that you can hear around you and even those you cannot with SpectrumView Plus, your dynamic audio companion for iPhone, iPad, and iPod Touch.

SpectrumView provides a high-quality, real-time spectrogram and spectrum analyser display, with a configurable sample rate and frequency resolution. You can use this application to measure the highest tones you can sing, obtain visual feedback of the frequencies in your speech, identify an annoying sound, calibrate musical instruments and all sorts of acoustic analysis. 

Here's what it can do for you:

·  Refresh Spectrogram. Allows users to refresh the spectrogram so that it clears the spectrogram that had already been displayed.
·  Change min and max scale. Allows users to set their own minimum and maximum scale value on the spectrogram and spectrum analyser view, in both linear and log scale.
·  Set Recording filename. Recording filenames are editable and the suffix can be set to have an incremental value or date/time.
·  Generate snapshot of the spectrum data from playback and live recordings.
·  Access recordings and snapshots using the "Files" app. All the data can be easily accessible using the "Files" app that is available from iOS 11. 
·  Web File Transfer. Allows you to access your files from another device using a web browser.
·  Logarithmic scale. Allows you to set either linear or logarithmic frequency scales in the Spectrogram and Spectrum Analyser views.
·  Peak hold. Allows you to freeze and hold the peaks of the frequency envelope (three holds in three distinct colours) in Spectrum Analyser mode.
·  Save location. Never forget where a clip was recorded – uses the devices location services.
·  Auto lock disabled. During playback and recordings auto lock is disabled to prevent the device from automatically locking (if enabled), for uninterrupted recording/playback
·  Multiple selectable sample rates from 8,000 Hz to 48,000 Hz
·  High-frequency resolution with configurable signal analysis window lengths or Fast Fourier Transform (FFT) orders. 
·  Sound intensity represented using a colour spectrum scale from -96 dBFS to 0 dBFS. 
·  Frequency Pinch-to-Zoom. Allows you to zoom into the frequency space to look at a specific tone or frequency.
·  Recording and Playback of Audio Files. Provides a fully functional audio recorder that allows you to record, pause and play back files in high-quality, uncompressed, wave format.
·  Tap Data Cursor. Allows taps on any part of the Spectrogram or Spectrum Analyser display to obtain the exact frequency in Hertz (Hz) and level in decibels (dB) at that point.
·  Musical Notes or Frequency Display on Tap. Selectable frequency or musical pitch notation to obtain the cent-accurate musical note e.g. A4 (22), when the display is tapped.
·  Live Spectrogram and Spectrum Analyser Views of Recorded Files.  Files recorded can be played back and the Spectrogram and Spectrum Analyser modes can be used to review the audio.
·  Sharing Recorded Files by Email or iTunes File-sharing.
·  High Quality Screenshots.
·  *Improved* Soundcloud support.  Audio files can be uploaded to or downloaded from Soundcloud as well as being able to post audio to Facebook.
·  *NEW* Import audio from videos in your device library.
·  Fullscreen mode. Hide the menu at the bottom of the screen to get even more of the screen dedicated to frequency analysis.
·  Selectable spectrogram colour scales. You can now select one of 7 colour scales for your spectrogram.
·  Selectable window functions.  You can now see the window function options provided.
·  Apply gain.  A maximum of 24dB gain can be applied to make ‘hard to see’ details easier to view.
·  Open In.  Audio files can be directly opened in SpectrumView.  View files sent by email directly in SpectrumView.

## Key features

- Real-time spectrogram and spectrum analyzer
- Configurable sample rate and frequency resolution
- Record, pause, and playback audio files
- Frequency pinch-to-zoom and tap data cursor
- Logarithmic and linear scale options
- Web file transfer for easy access

## Recent user reviews (10 of 43)

All indexed reviews: https://appshunter.io/ios/app/spectrumview-plus/id571455198/reviews.md

### 3/5 — Ну как бы да, но…

*2026-08-12*

Напоминает SonicVisualizer, но…
В чем прикол, дать функцию зума по вертикали, но не сделать зум по времени?
Сделали кнопку панарамирования со стрелками во все 4 стороны, но по факту перемещать можно только по вертикали.
Сделали функцию анализа файла, но программа не показывает спектрограмму всего файла, а нужно вручную воспроизвести нужный тебе фрагмент файла и остановить в нужный момент (без возможности зума и панарамирования по оси времени)

Не советую

### 2/5 — Hard to use

*2025-10-24*

This app is not user friendly. The controls are clunky and hard to figure out. Also, you can’t see the spectrogram in landscape.. It used to work when you rotated the phone, but now it stays in portrait. It no longer serves my purpose for this reason.

**Developer response:** Thanks for using SpectrumView and for the review. We are really sorry for the inconvenience. Please send us an email at techsupport@oxfordwaveresearch.com and let us know more about your problem in order to help you better.

### 4/5 — Verbesserungsfähig

*2025-10-03*

Mag die App. Aber zwei Dinge stören mich: 
1. Start dauert viel zu lange. Brauche die App sofort einsatzbereit, das animierte Logo nervt nur.
2. Wenn ich meine Airpods 3 Pro trage, Musik höre und die App starte wird die Lautstärke voll aufgedreht.

**Developer response:** Sorry to hear about the issue you are facing. Can you please send an email to techsupport@oxfordwaveresearch.com and give us some more details on the issue? Your device model, iOs version, any other apps running simultaneously, etc.?

### 2/5 — Limited spectrum bandwidth

*2025-01-12*

The app only operates to 8khz I was expecting to see the upper frequencies nearer 20khz plus

**Developer response:** Thank you for the review and the feedback. But no, it doesn’t only operate to 8 kHz. If you go into settings and set audio sample rate to 48 kHz, you will be able to view frequencies up to 24 kHz. Please feel free to send an email to techsupport@oxfordwaveresearch.com if you need further help.

### 3/5 — 100 Hz 以下に問題

*2024-06-20*

Spectrogramで入力の周波数を対数目盛で見ると、約100 Hz以下の領域で音を拾えていない事がわかった。修正されると嬉しい。
使用機種はiPhone 12 Plus、iOSは最新。

**Developer response:** Thanks for using SpectrumView and for the review. We are really sorry for the inconvenience. Please send us an email at techsupport@oxfordwaveresearch.com and let us know more about your problem in order to help you better.

### 5/5 — Le meilleur

*2023-12-14, version 2.4.1*

Simple, efficace, rien à dire

### 5/5 — Great app, heaps of features.

*2023-08-19*

Has heaps of features, and works well. The web file transfer is great for images and csv data and the tap to freeze peaks in the Freq Analyser view is a nice addition. Has a really good help section for those wanting more information.

Note for the devs: great app, so im being picky here. It would be handy if the fade-outs on the tap label could be toggled, or if the csv data from the web file access could match the analysis resolution settings.

**Developer response:** Thanks for the great feedback Sammy. We are very happy to hear that you enjoy using SpectrumView. I let dev know about your feedback for their review and consideration for future builds.

### 1/5 — Wird nicht mehr gepflegt, stürzt ab

*2022-10-15*

Wird die App nicht mehr gepflegt? Das Speichern von Dateien zb in iCloud, Adobe Creative Cloud usw ist nicht mehr möglich. Es passiert nichts, stürzt ab oder es erscheint die Meldung, die Kommunikation zu irgendeiner ominösen Hilfs-App sei nicht möglich. Ausserdem: Wozu beim Start der App immer dieses ewig lange Intro mit Logo und Animation? Das frisst nur Zeit und ist absolut unnötig. Alle anderen Apps sind performant und blitzschnell - nur SpectrumView besteht (aus Eitelkeit der Entwickler?) darauf, dieses zeitfressende nervige Logo beim Start anzuzeigen.

**Developer response:** Vielen Dank für Ihr Feedback. Unsere App wird weiterhin gepflegt, jedoch konnten wir das beschriebene Problem leider nicht nachvollziehen. Unser QA Team wäre dankbar, wenn Sie die Details des Problems für besseres Verständnis in einer Email an techsupport@oxfordwaveresearch.com schildern könnten.

### 4/5 — Outstanding, but...

*2022-03-04*

I have used this software for years on my phone and the insights it has given to me have been phenomenal. I have used it to look at the sounds of musical instruments and the changing tonality of teacup-chings dependening where the tea cup is tapped.

The basic functionality is excellent, but I have struggled to try to download the data as a .csv file.

The web link given does not work and I have no idea how the alleged "iTunes file sharing" works.

Given how good the. rest of teh application is this is really disappoint - hence not 5 stars.

**Developer response:** Hi Dylan and thanks for your very nice review. If you could email the details of your experience when exporting csv data to techsupport@oxfordwaveresearch.com we can do our best to help.

### 4/5 — My issue is why won’t the grid lines STAY OFF

*2021-07-24*

It saves every setting I put in place through even restarts but it turns the grid lines on SPECIFICALLY, and CONSTANTLY, to a point where I’m wondering if it’s my phone glitching or the app, cause it’s not me, I would have accidentally pressed any other button in settings by now, but it’s just always the grid lines and I always find myself turning them off- BUT, that’s my only issue with the app, so if you like grid lines this may be a five star review for you.

## Frequently asked questions about SpectrumView Plus

### What does SpectrumView Plus do?

SpectrumView Plus visualizes audible and inaudible frequencies in real-time using a dynamic audio companion. It provides a high-quality, real-time spectrogram and spectrum analyzer display with configurable sample rates and frequency resolution for various acoustic analysis tasks.

### What are the key features of SpectrumView Plus?

Key features include real-time spectrogram and spectrum analyzer views, configurable sample rates and frequency resolution, audio recording and playback, frequency pinch-to-zoom, a tap data cursor for precise measurements, and web file transfer for easy data access.

### How much does SpectrumView Plus cost?

SpectrumView Plus is a paid application. The exact price can be found on the app store listing. There are no in-app purchases or subscriptions mentioned.

### What devices is SpectrumView Plus compatible with?

SpectrumView Plus is designed for iPhone, iPad, and iPod Touch devices. It requires iOS 11 or later for full functionality, particularly for accessing recordings and snapshots using the 'Files' app.

### What are some common use cases for SpectrumView Plus?

Common use cases include measuring the highest tones you can sing, obtaining visual feedback of frequencies in speech, identifying annoying sounds, calibrating musical instruments, and performing general acoustic analysis.

## Version history (last 5 releases)

### 2.4.2 — 2024-01-25

SpectrumView Plus 2.4.2 (2.4.35) Update:

- Import audio from videos in your device library
- Improved SoundCloud compatibility 
- Improved sharing with other apps like Whatsapp
- Various bug fixes

### 2.4.1 — 2021-10-07

SpectrumView Plus 2.4.1 (2.4.18) Update
* Fixes bug which caused audio imported from iTunes library to play at high speed

### 2.4 — 2021-10-06

SpectrumView Plus 2.4.12 Update
* Updates for iOS 15 and new devices
* Various bug fixes

### 2.3 — 2018-07-18

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

New features in 2.3
* User interface compatible with iPhone X
* Added Privacy Policy for the app
* Ability to refresh spectrogram during recording and playback
* Ability to set the minimum and maximum scale value of spectrogram and spectrum analyser view (in both linear and log scale)
* Ability to set recording filename - recording filename can now have incremental suffix or date/time suffix
* File names of image snapshots and data snapshots that are generated from playback are named according to the playback filename which makes it easier to locate the file. 
* Allowing to access all the recordings, image snapshot and data snapshot from "Files" app (available from iOS 11)

Also,
* Updated to latest SDK and fixed user interface issues
* iOS 9.0 and above compatibility issues addressed (including file open issue)

### 2.2.1 — 2017-10-19

New features in 2.2
* Ability to use playback options (play/pause/seek) while viewing spectrogram
* Ability to share recordings to various other applications that support audio playback and/or attachments
* Ability to generate data snapshots of spectrogram and spectrum (both playback and recordings)
* Ability to enables access, playback, and download recordings as well as other files from a web browser on devices accessible on the same WiFi network
Also,
* Various bug fixes (memory usage in iPad pro 12.9 inch, user interface issues, etc.)
* iOS 8.2 and above compatibility issues addressed

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## More apps by Oxford Wave Research Ltd.

- [SpectrumView](https://appshunter.io/ios/app/spectrumview/id472662922)
- [Watch Me Record](https://appshunter.io/ios/app/watch-me-record/id1183756936)

All apps by Oxford Wave Research Ltd.: https://appshunter.io/developer/472662925

## Related topics

[spectrumview plus](https://appshunter.io/ios/topics/spectrumview-plus) · [spectrumview](https://appshunter.io/ios/topics/spectrumview)

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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 2026-08-25.*