KORG iWAVESTATION vs FFT Spectrum Audio Analyzer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KORG iWAVESTATION
This app recreates a legendary 1990s synthesizer, offering time-varying timbre creation and advanced vector synthesis. Experience its unique sound-shaping potential with a renewed graphic interface and touch-based operation for iOS devices.
- Faithful reproduction of original WAVESTATION sound
- Graphical wave sequence view with touch control
- 1,500 sounds, 700+ waveforms, 55 effects
- Powerful random sequence engine
- AUv3 support for Logic Pro and GarageBand
- Integration with KORG Gadget DAW
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Creating sounds with time-varying timbre, on your mobile device. KORG iWAVESTATION - A wave sequence synthesizer for iOS. The WAVESTATION synthesizer went on sale in 1990. This instrument featured an advanced vector synthesis system which created new sounds by combining and connecting multiple waveforms; it provided a mix/morphing function that let you use a joystick to change the balance of four oscillators, and a distinctive wave sequence function that allowed you to place waveforms in a desired sequence to create sequence patterns. To this day, it continues to be considered a legendary and still-unique instrument. Now in 2016, the WAVESTATION has been reborn as "KORG iWAVESTATION," an app for iPad/iPhone. In addition to completely reproducing the programs, it also features a renewed design that lets everyone experience the stupendous sound-shaping potential of the WAVESTATION. It features touch-based operation that's distinctive of iOS, in conjunction with a new graphic interface that allows you to visualize and edit the time-varying timbral changes that are distinctive of the WAVESTATION. [ Features ] - A faithful reproduction of the original WAVESTATION sound: In addition to providing the sounds from all PCM memories of the WAVESTATION, the new iWAVESTATION also reproduces in software every detail of the parameters, based on an analysis of the original hardware circuit diagram. - A new wave sequence view that can be graphically controlled: The iWAVESTATION, we advance another step with a graphical user interface that takes advantage of the touch operations that are a characteristic of iOS. Even more than ever, we've updated the screen design with an emphasis on creating sequences. - 1,500 sounds, more than 700 waveforms, 55 effects, and a powerful random sequence engine: This new instrument includes a stupendous number of presets and waveforms, covering all models of the series. iWAVESTATION also provides a new random sequence function which will give you different perspectives to inspire new sounds. - Use with KORG Gadget and AUv3 for song production: iWAVESTATION can be used in conjunction with the "KORG Gadget" music production DAW app that has won numerous awards around the world. If both apps are installed, it can be used as the "Milpitas" gadget inside the KORG Gadget app. And also supports AUv3, so it can also be used as a sound module for Logic Pro and GarageBand. With a convenient and richly varied set of sounds, iWAVESTATION can be the foundation for either of these music production environments. More info at korg.com
FFT Spectrum Audio Analyzer
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FFT Spectrum Audio Analyzer transforms your device into a professional-grade audio measurement system. Whether you are calibrating home theater speakers, tuning car audio systems, analyzing room acoustics, or troubleshooting sound equipment, this app delivers the precision and features that audio professionals demand. PROFESSIONAL FFT ANALYSIS Real-time Fast Fourier Transform analysis with multiple resolution options. Choose from 4096, 8192, 16384, or 32768 point FFT sizes to balance frequency resolution and response time for your specific application. Higher FFT sizes reveal fine frequency detail while smaller sizes provide faster updates for dynamic measurements. OCTAVE-NORMALIZED DISPLAY Pink noise appears flat on the display, following the standard convention used in professional acoustics measurement. This octave normalization makes it easy to identify frequency response problems and compare measurements to industry standards. FLEXIBLE SMOOTHING OPTIONS Select the level of detail that matches your needs: - 1 Octave smoothing for quick system overview - 1/3 Octave for standard acoustic measurements - 1/6 Octave for detailed speaker analysis - 1/12 Octave for crossover tuning - 1/24 Octave for precision measurements DECAY AND AVERAGING MODES Multiple visualization modes help you capture the information you need: - Time-based decay (0.5s to 8s) for live sound analysis - Peak Hold to capture maximum levels - Running Average for stable long-term measurements MEASUREMENT TOOLS - Touch cursor for precise frequency and level readout - Peak frequency tracking with automatic detection - Pinch to zoom for detailed frequency range inspection - dB scale adjustment for optimal dynamic range display SAVE AND COMPARE Store measurements for later reference and comparison: - Save unlimited spectrum graphs with timestamps - Recall saved measurements as overlay for A/B comparison - Baseline subtraction mode shows difference from reference - Rename and organize your measurement library EXPORT AND SHARE Document and share your measurements: - Export high-resolution PNG images to Photos - Generate XLSX spreadsheet files with frequency and dB data - Share via email, messaging, or cloud storage CALIBRATION Device-specific microphone calibration ensures measurement accuracy. Adjust the calibration offset to match external reference microphones or compensate for known device characteristics. EXTERNAL MICROPHONE SUPPORT Connect professional USB or Lightning audio interfaces for improved measurement accuracy. The app automatically detects and switches to external input devices. USE CASES Home Theater Setup: Measure and balance speaker levels, identify room modes, verify subwoofer integration, and optimize crossover settings. Car Audio Tuning: Analyze frequency response at the listening position, identify resonances, and tune equalizer settings for optimal sound. Live Sound: Quick system checks, feedback identification, and real-time monitoring during performances. Studio Acoustics: Room analysis, monitor calibration, and acoustic treatment verification. Speaker Testing: Frequency response measurement, driver matching, and crossover design verification. Education: Visualize sound and frequency concepts for teaching acoustics and audio engineering. DESIGNED FOR PROFESSIONALS Clean, dark interface optimized for use in low-light environments. High contrast display with cyan spectrum trace for easy visibility. Responsive controls designed for one-handed operation. No internet connection required. All processing happens locally on your device. Your audio data stays private. Privacy Policy: https://audiomillo.com/privacy Terms of Service: https://audiomillo.com/eula
Screenshots
Verdict
The clearest difference is price: FFT Spectrum Audio Analyzer at $6.99 against KORG iWAVESTATION's $29.99. FFT Spectrum Audio Analyzer also leads on in-app purchases (none vs 1). KORG iWAVESTATION's advantage is chart position (#196 vs unranked) and iOS requirement (13.0 vs 17.0). On update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
KORG iWAVESTATION costs $29.99 and FFT Spectrum Audio Analyzer $6.99 up front. KORG iWAVESTATION sells 1 one-off in-app purchase. FFT Spectrum Audio Analyzer asks for nothing beyond the download.
KORG iWAVESTATION ships an update every 5 months, FFT Spectrum Audio Analyzer every 4 months. The most recent releases landed on November 6, 2026 and November 1, 2026 respectively.
| Parameter | KORG iWAVESTATION | FFT Spectrum Audio Analyzer |
|---|---|---|
| Price | $29.99 | $6.99 — better |
| Rating | 4.2 (135 ratings) — better | — |
| Positive reviews | 69.0% of reviews | — |
| Number of ratings | 135 — better | — |
| Update frequency | Every 5 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Best chart rank | #196 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 96 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | KORG INC. | Yumm One |
Bugs and requests
KORG iWAVESTATION
Reported bugs
2 issues- Crashes when saving user presets
- Compatibility issues with newer iOS versions
Requested features
4 requests- Add AUv3 support
- Improve preset management and browsing
- Enhance MIDI functionality (channel selection, more CCs)
- Expand filter options (high-pass, band-pass)
FFT Spectrum Audio Analyzer
Not enough reviews yet to summarise bugs or requests.
In-app purchases
KORG iWAVESTATION
- Expansion Card Pack$4.99
FFT Spectrum Audio Analyzer
No in-app purchases
Questions
Is KORG iWAVESTATION free?
Is FFT Spectrum Audio Analyzer free?
Do KORG iWAVESTATION or FFT Spectrum Audio Analyzer have ads?
Which is updated more often, KORG iWAVESTATION or FFT Spectrum Audio Analyzer?
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