# SpecWave — SPL Meter, Spectrum, Audio Gen

> SPL Meter, Spectrum, Audio Gen (iPhone/iPad app by 晓玮 郭.)

- Source: https://appshunter.io/ios/app/specwave/id6808551669 (this page in markdown: same URL + `.md`)
- Developer: [晓玮 郭](https://appshunter.io/developer/1896738896)
- Category: Utilities, Music
- Price: Free
- Age rating: 4+
- Requires: iOS 26.0 · 8 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, Brazilian Portuguese, Russian, Chinese (Simplified, China), European Spanish and 1 more
- Released: 2026-09-23
- Data updated: 2026-09-30
- User reviews in markdown: https://appshunter.io/ios/app/specwave/id6808551669/reviews.md

## What is SpecWave?

Key Features

Real-time Spectrum Analysis (See Your Sound)
- Instant Visualization: Captures ambient sound via microphone and presents it in beautiful "Line" or "Bar" chart styles, making pitch and volume crystal clear.
- Key Data Capture: Displays the current peak frequency and total decibel level in real time, while automatically logging the maximum and minimum decibels for your session.
- One-Tap Display Freeze: Tap the spectrum chart anytime to freeze the current frame, allowing you to observe and compare sound details at your own pace.
- Multi-Source & Parameter Toggles: Switch between built-in and external microphones with a single tap, and toggle between log/linear frequency axes to suit your needs.
- Microphone Gain Control: Easily adjust input sensitivity to your liking. *(Note: This app outputs raw relative values only; for high-precision acoustic measurement, please calibrate with a sound level meter first)*

Audio Signal Generation (A Fun Health Check for Headphones & Speakers)
- 3 Classic Waveforms: Built-in sine, square, and triangle wave audio signals to instantly turn your phone into a versatile sound transmitter.
- Fun Dynamic Frequency Sweeps: Supports fixed frequency playback alongside single, loop, or round-trip dynamic sweep modes. Easily test speaker bass depth or fine-tune audio gear.
- Precise Gesture Tuning: Use smooth swipe gestures for silky, precise micro-adjustments to both output frequency and volume gain.

Common Use Cases
- Measure room insulation or ambient noise decibels at home or in the office.
- Test newly purchased headphones or speakers to see if the bass is deep enough and the treble is crisp.
- Assist with instrument tuning by viewing the exact sound pitch and frequency.
- Explore fun acoustics by playing curious sweep tones with the signal generator.


## Version history (last 2 releases)

### 1.1 — 2026-09-29

- Adapted for iOS 27
- Optimized some UI details

### 1.0 — 2026-09-23

No release notes.

## Apps similar to SpecWave

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [iPerf NetTest](https://appshunter.io/ios/app/iperf-nettest/id6774609036) | — | Free | Utilities |
| [Decibel Meter \| Sound Level](https://appshunter.io/ios/app/decibel-meter-sound-level/id6763893170) | — | Free | Utilities |
| [Pocket Seismograph: Vibration](https://appshunter.io/ios/app/pocket-seismograph-vibration/id6766446046) | — | Free | Utilities |
| [Text to Speech TTS](https://appshunter.io/ios/app/text-to-speech-tts/id6484593690) | — | Free | Utilities |
| [N-Signal / FFT Sound Analyzer](https://appshunter.io/ios/app/n-signal-fft-sound-analyzer/id6755102833) | — | Free | Utilities |
| [Spectrum Analyzer+ Audio FFT](https://appshunter.io/ios/app/spectrum-analyzer-plus-audio-fft/id6760830858) | 2.3 (3) | Free | Utilities |

## More apps by 晓玮 郭

- [Swipe Counter - Gesture Tally](https://appshunter.io/ios/app/swipe-counter-gesture-tally/id6770397788)
- [HR & SpO2 - Widget Union](https://appshunter.io/ios/app/hr-and-spo2-widget-union/id6773011614)
- [SetTrack - Gym Tracker](https://appshunter.io/ios/app/settrack-gym-tracker/id6779530682)
- [HR & SpO2 - Companion App](https://appshunter.io/ios/app/hr-and-spo2-companion-app/id6781260591)
- [Barometer on‑Wrist](https://appshunter.io/ios/app/barometer-onwrist/id6805385333)

All apps by 晓玮 郭: https://appshunter.io/developer/1896738896

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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 2026-09-30.*