VoxSyn vs Mass
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VoxSyn
Transform your voice into a versatile vocal sound generator. This app captures your vocal modulations to create unique sounds beyond traditional vocoding, allowing you to trigger synthesizer sounds with your voice or a keyboard. Expand your sonic palette with a vast pool of presets and effects.
- Voice control of pitch and timbre
- 22-channel vocoder
- Integrated preset synthesizer engine
- Hundreds of presets
- Hi-end audio effects
- Audiobus and Inter App Audio compatible
- MIDI and background audio support
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VoxSyn turns your voice into the most flexible vocal sound generator ever. Instantly following even subtle modulations of pitch and spectral changes of your voice VoxSyn creates signature vocal sounds far beyond traditional vocoding. Talk or sing into the microphone and you’ll trigger various synthesizer sounds following your voice pitch or the notes touched on the hexagonal keyboard / external MIDI Keyboard. The basic sounds are selected from a vast pool of predefined sounds from the famous TERA synthesis engine which can be further expanded by its unique random sound generator. The harmonic table note layout visualizes your voices pitch in realtime and also let you play notes for more traditional vocoder effects. VoxSyn is Audiobus compatible and can be used in the Input, Filter and Output slots in the Audiobus signal chain. The output can be recorded to an audio file which you can use with other Apps and programs for further processing. Features: - Voice control of pitch and timbre - 22-channel Vocoder - Integrated preset synthesizer engine - Hundreds of presets included - Hi-end Reverb and Chorus/Delay/Distortion/Phaser effects - Share/Export of audio recordings - CoreMIDI / Virtual MIDI and Background audio - Inter App Audio compatible - Audiobus 2 support (Input/Filter/Output) with state saving
Mass
This app is a physics-based MIDI generator that allows musicians to create complex generative sequences, organic modulations, and explore boundless musical experimentation. It offers a powerful toolkit for creative control and can be used as a standalone application or an AUv3 plugin.
- Generative Sequences
- Living Modulations
- Euclidean Pattern Sequencing
- Flexible MIDI CC
- Physics-Based Animation
- Standalone & AUv3 Plugin
- MIDI Sync
- iCloud Sync
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Open the door to new musical dimensions with Mass — a physics-based MIDI generator crafted to inspire musicians across genres. Add complexity to your sequences, explore generative patterns, or create organic modulations; Mass is your gateway to boundless musical experimentation. • Generative Sequences: Sculpt intricate melodies and rhythms that evolve over time. • Living Modulations: Shape fluid, natural modulations that respond like living elements. • Total Creative Freedom: Need a spark of randomness or complete control? Mass lets you move seamlessly between guided automation and full improvisation. Whether you’re diving into ambient soundscapes, exploring the depths of MIDI control, or crafting intricate modulations, Mass is your key to immersive sonic worlds. Available as a standalone MIDI generator and AUv3 plugin, Mass transforms your favorite hardware and software instruments into a sandbox of endless possibilities. With Mass, you’ll find an extensive toolkit for creative control and experimentation. Here’s what you can expect: • Euclidean Pattern Sequencing: Easily create complex sequences by layering polyrhythmic Euclidian patterns. • Flexible MIDI CC: Modulate and sequence any MIDI CC parameter, allowing you to breathe life into every detail of your sound. • Physics-Based Animation: Apply physics to sequences and modulations, creating dynamic, evolving movements within your music. • Powerful Controller: Mass is a powerful MIDI controller, allowing you to manipulate your favorite hardware and software instruments in either standalone or AUv3 modes. • MIDI Sync: Synchronize with external hardware and software using standard MIDI sync capabilities. Mass can function as the primary clock, or be synced to a host clock. • iCloud Sync: Seamlessly share your creations across devices with iCloud syncing. Work in the standalone version or AUv3 plugin, without missing a beat. With Mass, you’re free to explore musical layers, rhythms, and motion in new ways. Let it guide your creative journey, transforming each idea into a boundless musical experience.
Screenshots
Verdict
The clearest difference is review sentiment: Mass at 100% against VoxSyn's 48%. Mass also leads on rating (5.0 vs 3.1). VoxSyn's advantage is price ($0.99 vs $9.99) and update cadence (every 9 days vs every 4 months). On ratings volume, ads, in-app purchases and monetization model 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
VoxSyn costs $0.99 and Mass $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Mass holds the better App Store score, 5.0 against 3.1. Both are backed by a comparable volume of ratings — 18 and 11 respectively. Written reviews point the same way: 48% of VoxSyn's written reviews are positive against 100% of Mass's.
VoxSyn ships an update every 9 days, Mass every 4 months. Both last shipped on October 15, 2026.
| Parameter | VoxSyn | Mass |
|---|---|---|
| Price | $0.99 — better | $9.99 |
| Rating | 3.1 (18 ratings) | 5.0 (11 ratings) — better |
| Positive reviews | 48.1% of reviews | 100.0% of reviews — better |
| Number of ratings | 18 — better | 11 |
| Update frequency | Every 9 days — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 8.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 31 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Harry Gohs | Usable Creations |
Customer experience
VoxSyn
Mass
In-app purchases
VoxSyn
No in-app purchases
Mass
No in-app purchases









