Comparison

VoxSyn vs Phosphor 3

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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

About

Phosphor 3

This app recreates a vintage digital synthesizer, offering a faithful emulation of a classic sound engine. It includes modern features like MPE, extensive modulation, and a new UI for sonic exploration.

Highlights
  • Vintage digital synthesizer emulation
  • Additive synthesis engine
  • MPE support
  • Extensive modulation routing
  • Preset manager
  • Tuning tables
Read full description

Glow in the dark synthesis. Phosphor 3 is a dual-oscillator additive synthesizer that puts the raw building blocks of sound at your fingertips. Draw, randomize, or select up to 64 harmonics per oscillator, then shape them with envelopes, LFOs, cross-modulation, and a flexible mod matrix. Originally inspired by the alphaSyntauri, a rare digital additive synth from the early 1980s, Phosphor 3 takes that concept far beyond its origins with modern MPE expression, polyphonic modulation, and a full effects engine. --- Additive Oscillators Two identical additive oscillators, each with up to 64 individually editable harmonics. Start from classic shapes: sawtooth, triangle, square, or draw your own harmonic spectrum directly in the partial editor. The intelligent randomizer generates musically useful timbres with variable rolloff, density, and formant peaks, so every click produces something worth exploring. Choose 16, 32, or 64 partials per oscillator to balance complexity against CPU. Each oscillator has independent level, pan, transpose, fine tune, a noise generator with lo-fi downsampling, and cross-modulation (FM) for pushing timbres into harsher, more complex territory. Modulation Two ADSR envelopes with adjustable attack, decay, and release curves. Two LFOs with four waveforms (pulse, sine, saw, random), tempo sync, and the option to run polyphonically, a separate LFO per voice, or globally. An 8-source modulation matrix routes velocity, pressure, pitch bend, mod wheel, CC 74, triggered random, and both LFOs to destinations across the oscillators and effects. Effects Stereo delay with independent left/right time, feedback, and cross-channel feedback for ping-pong and rhythmic patterns. Tempo sync locks delay times to your DAW. Dual band-pass filters after the delay let you carve the wet signal into resonant, frequency-specific textures. Expression Full MPE support with per-note pitch bend, pressure, and slide across 16 polyphonic voices. Mono legato and mono retrigger modes with adjustable portamento. Unison mode for thick, detuned stacks. A scrollable 128-key on-screen keyboard with velocity from touch position, pitch bend from horizontal drag, and channel pressure from vertical drag, no hardware controller required. Tuning MTS-ESP client support for real-time microtuning from any MTS-ESP master. TUN file import for custom scales. Standard 12-TET with adjustable A4 reference. Supports AUv3 for use in GarageBand, AUM, Cubasis, and other AUv3-compatible hosts.

Screenshots

VoxSyn3 screens

Verdict

The call

The clearest difference is rating: Phosphor 3 at 4.7 against VoxSyn's 3.1. Phosphor 3 also leads on review sentiment (79% vs 48%). VoxSyn's advantage is update cadence (every 9 days vs every 11 months) and price ($0.99 vs $5.99). 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

CostPrice · In-app purchases · Ads · Monetization

VoxSyn costs $0.99 and Phosphor 3 $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Phosphor 3 holds the better App Store score, 4.7 against 3.1. Both are backed by a comparable volume of ratings — 18 and 9 respectively. Written reviews point the same way: 48% of VoxSyn's written reviews are positive against 79% of Phosphor 3's.

UpkeepUpdate frequency

VoxSyn ships an update every 9 days, Phosphor 3 every 11 months. The most recent releases landed on October 3, 2026 and September 27, 2026 respectively.

Scorecard6 real differences · 4 level
VoxSyn versus Phosphor 3: the parameters behind the verdict, then further details
ParameterVoxSynPhosphor 3
Price$0.99 — better$5.99
Rating3.1 (18 ratings)4.7 (9 ratings) — better
Positive reviews48.1% of reviews78.6% of reviews — better
Number of ratings18 — better9
Update frequencyEvery 9 days — betterEvery 11 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS8.0 — better12.0
Further details — not scored
Size31 MB27 MB
Age rating4+4+
DeveloperHarry GohsAudio Damage, Inc.

Customer experience

VoxSyn

All ratings18 ratings
Positive50.0%
Neutral11.1%
Negative38.9%
Written reviews27 reviews
Positive48.1%
Neutral14.8%
Negative37.0%

Phosphor 3

All ratings7 ratings
Positive85.7%
Neutral14.3%
Negative0.0%
Written reviews14 reviews
Positive78.6%
Neutral14.3%
Negative7.1%

In-app purchases

None

VoxSyn

No in-app purchases

None

Phosphor 3

No in-app purchases

Questions

Is VoxSyn free?
VoxSyn costs $0.99, with no in-app purchases.
Is Phosphor 3 free?
Phosphor 3 costs $5.99, with no in-app purchases.
Which has better reviews, VoxSyn or Phosphor 3?
Phosphor 3 is rated higher. VoxSyn averages 3.1 out of 5 from 18 ratings, while Phosphor 3 averages 4.7 from 9 ratings.
Do VoxSyn or Phosphor 3 have ads?
Neither VoxSyn nor Phosphor 3 shows ads.
Which is updated more often, VoxSyn or Phosphor 3?
VoxSyn ships an update every 9 days, and Phosphor 3 every 11 months. Most recently, VoxSyn was updated on October 3, 2026 and Phosphor 3 on September 27, 2026.

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