VAPolyFM vs Spectrum AUv3 FFT Visualizer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VAPolyFM
Create music with a versatile hybrid synthesizer offering both FM and virtual analog subtractive synthesis. Explore a wide range of effects, a built-in sequencer, and extensive MIDI support. Save and share projects seamlessly across iPhone, iPad, and Mac.
- FM synthesizer with 6 operators
- Virtual analog subtractive synthesizer
- Built-in effects (delay, chorus, reverb)
- Sequencer with piano roll editor
- AudioUnit Extension (AUv3) support
- Ableton Link and MIDI 2.0 support
- iCloud Drive project sharing
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VAPolyFM is a hybrid polyphonic synthesizer for iPhone, iPad and Mac. It features FM synthesizer and subtractive synthesizer. It operates as a stand alone or as an AudioUnit Extension (AUv3). Stand Alone supports Ableton Link, MIDI and audio file export. FM synthesizer features 6 operators and 32 algorithm and it is inspired by FM synthesizers of the 1980’s. Virtual analog subtractive synthesizer features two oscillators, resonant high pass filter, resonant low pass filter and two ADSR envelopes per voice. Built-in Effects include delay, chorus, flanger, reverb, eq and compressor. VAPolyFM also includes sequencer which features piano roll editor and parameter automation. Project files can be saved in iCloud Drive, so that the project can be accessed from iPhone, iPad or Mac. - Main Features - FM Synthesizer. 6 operators and 32 algorithm. Virtual analog subtractive synthesizer. Maximum 8 voice polyphony. it depends on performance of the device it is running. Built-in effects and sequencer. Support MIDI 2.0 Support Audio Unit Extension (AUv3) Works on iPhone, iPad and Mac. Support iCloud Drive to share project files between the platforms. Audio Export. Linear PCM format (AIFF, WAV and CAF) and compressed format (AAC) Support Ableton Link, Bluetooth MIDI, MIDI In / Out. Includes 139 Factory Presets - System Requirements - A13 Fusion or above is recommended. AudioUnit Extension (AUv3) requires host application which support AudioUnit Extension. AudioUnit Extension is supported by Apple Logic and Apple Garage Band on iOS and macOS. For any other DAW, it depends on the application and some of them don’t support AudioUnit Extension. Sound may be distorted if CPU of the device doesn't have enough power. If it happens reduce number of voices.
Spectrum AUv3 FFT Visualizer
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Turn sound into stunning visuals with Spectrum, an AUv3-compatible real-time spectrum analyzer for audio signals. Effortlessly monitor 29 specific frequencies from 10 Hz to 20 kHz with precision, powered by Fast Fourier Transform (FFT) data. Spectrum’s sleek graphics feature vertical markers, filled paths, and a smooth gradient background for an immersive visual experience. Enjoy accurate frequency placement with logarithmic scaling, and interact seamlessly using touch to highlight specific frequencies. Designed for performance, it dynamically adjusts to real-time data, transforms decibels, and ensures smooth, optimized rendering for flawless updates.
Screenshots
Verdict
The clearest difference is price: Spectrum AUv3 FFT Visualizer at $0.99 against VAPolyFM's $14.99. On update cadence, ads, in-app purchases 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
VAPolyFM costs $14.99 and Spectrum AUv3 FFT Visualizer $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
VAPolyFM ships an update every 17 months, Spectrum AUv3 FFT Visualizer every 12 months. The most recent releases landed on September 21, 2026 and September 20, 2026 respectively.
| Parameter | VAPolyFM | Spectrum AUv3 FFT Visualizer |
|---|---|---|
| Price | $14.99 | $0.99 — better |
| Rating | 4.5 (6 ratings) — better | — |
| Positive reviews | 16.7% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 17 months | Every 12 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 16.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 17 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Ryo Togawa | DiscoDSP LLC |
In-app purchases
VAPolyFM
No in-app purchases
Spectrum AUv3 FFT Visualizer
No in-app purchases
Questions
Is VAPolyFM free?
Is Spectrum AUv3 FFT Visualizer free?
Do VAPolyFM or Spectrum AUv3 FFT Visualizer have ads?
Which is updated more often, VAPolyFM or Spectrum AUv3 FFT Visualizer?
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