---
title: "Spectrum: Audio Analyzer - Reviews, Revenue and Downloads in South Korea | Apple App Store"
description: "Spectrum turns your phone into a modern real-time audio analyzer - the clean, fast tool that older spectrum apps never gave you.  See sound the moment it happens: a live FFT frequency spectrum and a s"
---

# Spectrum: Audio Analyzer — South Korea

![Spectrum App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/16/b3/cf/16b3cf82-50df-6015-58a4-eaf2d0c6828d/AppIcon-0-0-1x_U007emarketing-0-11-0-85-220.png/434x0w.png)

**Developer:** [SEONYONG LEE](https://apptail.io/developer/seonyong-lee-Zspgoc)
**Category:** Utilities
**Rating:** 5.0/5 (1 ratings)
**Price:** Free
**Bundle ID:** com.hedvion.spectrum
**Store:** Apple App Store
**Country:** South Korea
**Version:** 1.2.1 (released 2026-11-11)
**Original Release:** 2026-07-15
**Languages:** English, French, German, Italian, Japanese, Portuguese, Chinese, Spanish

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/kr/app/app/id6787894411)
**AppTail Page:** [https://apptail.io/app/spectrum-audio-analyzer-OKUA/south-korea](https://apptail.io/app/spectrum-audio-analyzer-OKUA/south-korea)

## Spectrum Description
Spectrum turns your phone into a modern real-time audio analyzer - the clean, fast tool that older spectrum apps never gave you.

See sound the moment it happens: a live FFT frequency spectrum and a scrolling spectrogram (waterfall), with automatic peak detection and the matching musical note. Built for a phone screen, with a beautiful dark and light theme - not a cramped desktop port.

WHY SPECTRUM
• Modern, readable interface - designed for touch, dark & light themes
• Save your measurements and revisit them anytime (most analyzers forget everything the moment you close them)
• Export the spectrogram as a high-resolution image, or your data as CSV
• Works on both iPhone and iPad
• Real peak frequency + musical note readout, in cents

FEATURES
• Real-time FFT spectrum, log or linear frequency axis
• Spectrogram (waterfall) view
• Tap the chart for a frequency cursor with dB and musical note
• Peak hold and peak-frequency tracking
• Musical note detection (A4 = 440 Hz)
• A-weighting for perceived loudness
• Adjustable FFT size (2048 / 4096 / 8192)
• Save, name and organize measurements
• Image & CSV export
• 8 languages

SPECTRUM PRO - one-time purchase, no subscription
• 1/3 octave RTA view with per-band peak hold - the classic real-time analyzer used for live sound and room tuning
• Tone generator: sine tones, 20 Hz-20 kHz logarithmic sweep, white & pink noise for testing speakers and room acoustics
• Peak list: the strongest peaks with harmonics tagged
• Up to 4 frequency markers on the chart
• Calibration offset (±20 dB) to match a reference meter
• Extra-high resolution 16384 FFT
• High-resolution image export and no ads, forever

Everything is processed on your device - no audio is ever uploaded. Microphone access is the only permission needed.

Perfect for musicians, audio engineers, students, DIY speaker builders, hum & noise hunters, and anyone curious about the sounds around them.

## Spectrum Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/4b/da/f9/4bdaf954-a8ec-5f29-48a6-a0045646106f/en_1_iphone.png/1320x2868.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/53/45/78/53457801-a722-1bff-74ab-fcf32c02c813/en_2_iphone.png/1320x2868.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/20/4e/9b/204e9bb1-e111-af18-b447-762d25802259/en_3_iphone.png/1320x2868.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/60/41/4b/60414b60-b6e9-954d-ca76-50846b03fcf8/en_4_iphone.png/1320x2868.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/8f/cd/1d/8fcd1d1e-5b43-3e44-29ff-0980aeae63b7/en_5_iphone.png/1320x2868.png)

## Spectrum Rating Breakdown in South Korea
- 5 stars: 1 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)






## Spectrum Available In
- [South Korea](https://apptail.io/app/spectrum-audio-analyzer-OKUA/south-korea)
- [Argentina](https://apptail.io/app/spectrum-audio-analyzer-OKUA/argentina)
- [Australia](https://apptail.io/app/spectrum-audio-analyzer-OKUA/australia)
- [Barbados](https://apptail.io/app/spectrum-audio-analyzer-OKUA/barbados)
- [Bulgaria](https://apptail.io/app/spectrum-audio-analyzer-OKUA/bulgaria)
- [Bahrain](https://apptail.io/app/spectrum-audio-analyzer-OKUA/bahrain)
- [Bermuda](https://apptail.io/app/spectrum-audio-analyzer-OKUA/bermuda)
- [Brazil](https://apptail.io/app/spectrum-audio-analyzer-OKUA/brazil)
- [Belarus](https://apptail.io/app/spectrum-audio-analyzer-OKUA/belarus)
- [Belize](https://apptail.io/app/spectrum-audio-analyzer-OKUA/belize)
- [Canada](https://apptail.io/app/spectrum-audio-analyzer-OKUA/canada)
- [Switzerland](https://apptail.io/app/spectrum-audio-analyzer-OKUA/switzerland)
- [Chile](https://apptail.io/app/spectrum-audio-analyzer-OKUA/chile)
- [China](https://apptail.io/app/spectrum-audio-analyzer-OKUA/china)
- [Colombia](https://apptail.io/app/spectrum-audio-analyzer-OKUA/colombia)
- [Cyprus](https://apptail.io/app/spectrum-audio-analyzer-OKUA/cyprus)
- [Czechia](https://apptail.io/app/spectrum-audio-analyzer-OKUA/czechia)
- [Germany](https://apptail.io/app/spectrum-audio-analyzer-OKUA/germany)
- [Denmark](https://apptail.io/app/spectrum-audio-analyzer-OKUA/denmark)
- [Dominican Republic](https://apptail.io/app/spectrum-audio-analyzer-OKUA/dominican-republic)
- [Algeria](https://apptail.io/app/spectrum-audio-analyzer-OKUA/algeria)
- [Ecuador](https://apptail.io/app/spectrum-audio-analyzer-OKUA/ecuador)
- [Estonia](https://apptail.io/app/spectrum-audio-analyzer-OKUA/estonia)
- [Egypt](https://apptail.io/app/spectrum-audio-analyzer-OKUA/egypt)
- [Spain](https://apptail.io/app/spectrum-audio-analyzer-OKUA/spain)
- [Finland](https://apptail.io/app/spectrum-audio-analyzer-OKUA/finland)
- [France](https://apptail.io/app/spectrum-audio-analyzer-OKUA/france)
- [United Kingdom](https://apptail.io/app/spectrum-audio-analyzer-OKUA/united-kingdom)
- [Ghana](https://apptail.io/app/spectrum-audio-analyzer-OKUA/ghana)
- [Greece](https://apptail.io/app/spectrum-audio-analyzer-OKUA/greece)
- [Guyana](https://apptail.io/app/spectrum-audio-analyzer-OKUA/guyana)
- [Honduras](https://apptail.io/app/spectrum-audio-analyzer-OKUA/honduras)
- [Croatia](https://apptail.io/app/spectrum-audio-analyzer-OKUA/croatia)
- [Indonesia](https://apptail.io/app/spectrum-audio-analyzer-OKUA/indonesia)
- [Israel](https://apptail.io/app/spectrum-audio-analyzer-OKUA/israel)
- [Italy](https://apptail.io/app/spectrum-audio-analyzer-OKUA/italy)
- [Jamaica](https://apptail.io/app/spectrum-audio-analyzer-OKUA/jamaica)
- [Jordan](https://apptail.io/app/spectrum-audio-analyzer-OKUA/jordan)
- [Japan](https://apptail.io/app/spectrum-audio-analyzer-OKUA/japan)
- [Kenya](https://apptail.io/app/spectrum-audio-analyzer-OKUA/kenya)
- [Cambodia](https://apptail.io/app/spectrum-audio-analyzer-OKUA/cambodia)
- [Lithuania](https://apptail.io/app/spectrum-audio-analyzer-OKUA/lithuania)
- [Latvia](https://apptail.io/app/spectrum-audio-analyzer-OKUA/latvia)
- [Malta](https://apptail.io/app/spectrum-audio-analyzer-OKUA/malta)
- [Mauritius](https://apptail.io/app/spectrum-audio-analyzer-OKUA/mauritius)
- [Mexico](https://apptail.io/app/spectrum-audio-analyzer-OKUA/mexico)
- [Malaysia](https://apptail.io/app/spectrum-audio-analyzer-OKUA/malaysia)
- [Netherlands](https://apptail.io/app/spectrum-audio-analyzer-OKUA/netherlands)
- [Norway](https://apptail.io/app/spectrum-audio-analyzer-OKUA/norway)
- [Nepal](https://apptail.io/app/spectrum-audio-analyzer-OKUA/nepal)
- [New Zealand](https://apptail.io/app/spectrum-audio-analyzer-OKUA/new-zealand)
- [Oman](https://apptail.io/app/spectrum-audio-analyzer-OKUA/oman)
- [Portugal](https://apptail.io/app/spectrum-audio-analyzer-OKUA/portugal)
- [Paraguay](https://apptail.io/app/spectrum-audio-analyzer-OKUA/paraguay)
- [Qatar](https://apptail.io/app/spectrum-audio-analyzer-OKUA/qatar)
- [Saudi Arabia](https://apptail.io/app/spectrum-audio-analyzer-OKUA/saudi-arabia)
- [Singapore](https://apptail.io/app/spectrum-audio-analyzer-OKUA/singapore)
- [Slovenia](https://apptail.io/app/spectrum-audio-analyzer-OKUA/slovenia)
- [Slovakia](https://apptail.io/app/spectrum-audio-analyzer-OKUA/slovakia)
- [Suriname](https://apptail.io/app/spectrum-audio-analyzer-OKUA/suriname)
- [El Salvador](https://apptail.io/app/spectrum-audio-analyzer-OKUA/el-salvador)
- [Thailand](https://apptail.io/app/spectrum-audio-analyzer-OKUA/thailand)
- [Taiwan](https://apptail.io/app/spectrum-audio-analyzer-OKUA/taiwan)
- [Uganda](https://apptail.io/app/spectrum-audio-analyzer-OKUA/uganda)
- [United States](https://apptail.io/app/spectrum-audio-analyzer-OKUA/united-states)
- [Uruguay](https://apptail.io/app/spectrum-audio-analyzer-OKUA/uruguay)
- [Uzbekistan](https://apptail.io/app/spectrum-audio-analyzer-OKUA/uzbekistan)
- [Vietnam](https://apptail.io/app/spectrum-audio-analyzer-OKUA/vietnam)
- [Angola](https://apptail.io/app/spectrum-audio-analyzer-OKUA/angola)
- [South Africa](https://apptail.io/app/spectrum-audio-analyzer-OKUA/south-africa)

---

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