VoxSyn vs Oscidia
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
Oscidia
This powerful synthesizer app allows iOS users to create a vast array of sounds using multiple oscillators, wavetable synthesis, and advanced modulation options. It features a versatile sequencer with independent arpeggiators and built-in effects for complex sound design.
- 3 Oscillators Per Voice
- Wavetable & Additive Synthesis
- Morphing & Warping Wavetables
- 5 Morphable Filter Types
- 3 Independent Arpeggiators
- Mod Matrix
- Internal Effects Suite
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Oscidia is an AUv3 plugin for iOS which can be loaded into your favorite DAW allowing you to use it as a sound source for any MIDI source. Its wide range of features and oscillator types allow it to produce a vast variety of sounds. In particular, the inclusion of WaveTable greatly expands the traditional wave types and brings a wealth of modulation options. Oscidia has 3 oscillators per voice, and each oscillator can be a different wavetable – all working and morphing together to create some incredibly amazing sounds. Oscidia includes SINE, SAW, SQUARE, TRIANGLE, SUPERSAW, SUPERSQUARE, WAVETABLE and ADDITIVE wave types. You can import and export compatible wavetables using drag and drop directly to the WaveTable manager. Wavetables support morphing and warping (phase distortion), all controlled by the Mod Matrix routing. The SINE and TRIANGLE wave types both support several wave folding modes which allow dramatic real-time morphing too. Oscidia also supports 5 filter types which support 12/24dB modes and morphable LP/BP/HP filter modes which can be automated from the Mod Matrix or via the Sequencer. The sequencer itself is very unique and allows up to 3 simultaneous ARPs to play at the same time. Each ARP can directly control the 3 oscillator levels independently per step, as well as the pitch, filter morph, cutoff frequency, probability, gate, note repeat and ties. This allows for some really complex rhythms to be created that are not tied to pitch. Oscidia Features: • 3 Oscillators Per Voice. • Support for Wavetable and Additive synthesis. • WaveTable supports Morph and Warp (Phase Distortion) features. • 4 LFOs Per Voice. • 5 Filter types with 12/24-bit slopes and morphable LP/BP/HP. • 4 ADSR (Attack, Decay, Sustain, Release ) or FEG (Fluid Envelope Generators). • Wave Folding is available for basic waveforms such as SINE and TRIANGLE. • OSC Sync. • XMod & Ring Mod (on osc1 & osc2). • Additive Synthesis for glass, metallic and bell like tones. • Build in Sequencer (with 3 independent ARPs). • Mod Matrix. • MPE Mode. • Internal Effects - reverb, delay, chorus, Haas, and Phaser effects. • Drag and Drop for import and export presets and wavetables. • Build in Help Manual.
Screenshots
Verdict
The clearest difference is price: VoxSyn at $0.99 against Oscidia's $14.99. VoxSyn also leads on update cadence (every 9 days vs monthly) and iOS requirement (8.0 vs 13). Oscidia's advantage is rating (5.0 vs 3.1) and review sentiment (88% vs 48%). 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 Oscidia $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Oscidia 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 88% of Oscidia's.
VoxSyn ships an update every 9 days, Oscidia monthly. Both last shipped on October 3, 2026.
| Parameter | VoxSyn | Oscidia |
|---|---|---|
| Price | $0.99 — better | $14.99 |
| Rating | 3.1 (18 ratings) | 5.0 (11 ratings) — better |
| Positive reviews | 48.1% of reviews | 87.5% of reviews — better |
| Number of ratings | 18 — better | 11 |
| Update frequency | Every 9 days — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 13 |
| Further details — not scored | ||
| Size | 31 MB | 168 MB |
| Age rating | 4+ | 4+ |
| Developer | Harry Gohs | 4Pockets.com |
Customer experience
VoxSyn
Oscidia
In-app purchases
VoxSyn
No in-app purchases
Oscidia
No in-app purchases









