Comparison

SpringSound vs VoxSyn Pro

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

Head to head
About

SpringSound

This app is a physical-modeling audio synthesizer that simulates sound through the interaction of springs, masses, and activators. It offers detailed control over various physical parameters and comes with a large library of presets. It can be used as a sound generator or effect, and supports MIDI and expressive controllers.

Highlights
  • Physical modeling sound synthesis
  • Detailed control of physical parameters
  • Large set of sound presets
  • Audio-In effect capability
  • MIDI and MPE support
  • iOS Continuum Remote integration
Features
Read full description

SpringSound is a physical-modeling audio synthesizer that produces sounds by simulating interactions and vibrations of a set of activators and masses connected to springs. The model offers detailed control of an array of features including: gravity, bouncing, fluid and static friction, mechanical limits, non-linear functions, and more. SpringSound is provided with a very large set of sound presets that you can tweak and save. Small video introductions are available: http://www.youtube.com/watch?v=L1GF7HkSV9c and https://www.youtube.com/watch?v=gdYuZ07nmRo And an audio demo of some presets: https://soundcloud.com/christophe-duquesne/demopresetspringsound It can be used as a sound generator or as an effect using its Audio-In feature, opening a new world of physical modeled effects. It is fully Audiobus® 2 and inter-app audio compatible, and manage state saving. SpringSound can be controlled by a standard MIDI keyboard and directly from the iOS device screen. It is complete with the new MIDI MPE (expressive MIDI) and therefore can be controlled by most expressive controllers like the Haken Continuum, ROLI Seaboard, Linnstrument, Madrona Labs Soundplane, etc. SpringSound app is designed for optimum use with the Haken Continuum (www.hakenaudio.com) and integrate an IOS Continuum Remote (iPad only) allowing a very comprehensive and accurate remote control of the Continuum from your iPad (access to all parameters except programming the Eagan Matrix). SpringSound has be designed to explore sounds domains you won’t be able to access with other synthesis technics. It expands your sonic palette with a new world of physical sounds. It is a rich musical instrument, a sophisticated sound-design tool and an entertaining sonic playground. SpringSound is the big brother of my former Ackorage-Spring app.

About

VoxSyn Pro

Transform your voice into a versatile sound generator with real-time pitch and spectral control. Explore a vast library of synthesizer sounds, expand them with a unique random generator, and create signature vocal effects beyond traditional vocoding. Compatible with AUv3 hosts for seamless integration into your music production workflow.

Highlights
  • Voice control of pitch and timbre
  • Mix original voice, synth carrier, and vocoded signal
  • 22-channel vocoder
  • Integrated preset synthesizer engine
  • Hundreds of presets
  • Hi-end effects suite
  • AUv3 compatible
Features
Read full description

VoxSyn Pro 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 Pro 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 visualises your voices pitch in realtime and also let you play notes for more traditional vocoder effects. VoxSyn Pro is AUv3 compatible and can be used in AU Host apps like Garageband, Cubasis, AUM and many more. Important: Users of VoxSyn should wait for the App bundle to save money. Features: - Voice control of pitch and timbre - Free Mix of original voice, synthesizer carrier and vocoded signal. - 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 - AUv3 AudioUnit with parameter automation - Audiobus 3 support (Input/Filter/Output) with state saving

Screenshots

SpringSound1 screens
VoxSyn Pro3 screens

Verdict

The call

The clearest difference is review sentiment: SpringSound at 74% against VoxSyn Pro's 20%. SpringSound also leads on rating (4.2 vs 3.4). VoxSyn Pro's advantage is update cadence (every 2 months vs every 9 months) and price ($1.99 vs $2.99). 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

SpringSound costs $2.99 and VoxSyn Pro $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

SpringSound holds the better App Store score, 4.2 against 3.4. Both are backed by a comparable volume of ratings — 19 and 14 respectively. Written reviews point the same way: 74% of SpringSound's written reviews are positive against 20% of VoxSyn Pro's.

UpkeepUpdate frequency

SpringSound ships an update every 9 months, VoxSyn Pro every 2 months. Both last shipped on October 24, 2026.

Scorecard5 real differences · 5 level
SpringSound versus VoxSyn Pro: the parameters behind the verdict, then further details
ParameterSpringSoundVoxSyn Pro
Price$2.99$1.99 — better
Rating4.2 (19 ratings) — better3.4 (14 ratings)
Positive reviews73.7% of reviews — better20.0% of reviews
Number of ratings19 — better14
Update frequencyEvery 9 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.612.0 — better
Further details — not scored
Size30 MB43 MB
Age rating4+4+
DeveloperChristophe DuquesneHarry Gohs

Customer experience

SpringSound

All ratings19 ratings
Positive73.7%
Neutral15.8%
Negative10.5%
Written reviews19 reviews
Positive73.7%
Neutral21.1%
Negative5.3%

VoxSyn Pro

All ratings14 ratings
Positive50.0%
Neutral21.4%
Negative28.6%
Written reviews15 reviews
Positive20.0%
Neutral20.0%
Negative60.0%

In-app purchases

None

SpringSound

No in-app purchases

None

VoxSyn Pro

No in-app purchases

Questions

Is SpringSound free?
SpringSound costs $2.99, with no in-app purchases.
Is VoxSyn Pro free?
VoxSyn Pro costs $1.99, with no in-app purchases.
Which has better reviews, SpringSound or VoxSyn Pro?
SpringSound is rated higher. SpringSound averages 4.2 out of 5 from 19 ratings, while VoxSyn Pro averages 3.4 from 14 ratings.
Do SpringSound or VoxSyn Pro have ads?
Neither SpringSound nor VoxSyn Pro shows ads.
Which is updated more often, SpringSound or VoxSyn Pro?
SpringSound ships an update every 9 months, and VoxSyn Pro every 2 months. Most recently, SpringSound was updated on October 24, 2026 and VoxSyn Pro on October 24, 2026.

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