Comparison

Filterstation2 vs VOSIS Pro

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

Head to head
About

Filterstation2

This app offers a versatile dual filter effect for music production, inspired by classic hardware. It features twelve filter algorithms, an envelope follower, and multiple operating modes for creative sound shaping. Its user-friendly interface and resizable GUI make it a powerful tool for producers.

Highlights
  • Twelve filter algorithms
  • Envelope follower with sidechain
  • VCA mode for tremolo/gate
  • LFO with tempo sync
  • Serial, parallel, and stereo modes
  • Resizable GUI
  • Cross-platform preset manager
Features
Read full description

Filterstation 2 is the Audio Damage dual filter, built for sound design and performance rather than corrective EQ. It runs two resonant filters in series, in parallel, or split across the stereo field, with twelve filter algorithms and a full set of modulation tools for movement, distortion, and rhythm. FEATURES Twelve filter algorithms, including our 914 bandpass and Filterpod lowpass models, a clean state-variable filter, and an MS20-style filter, covering lowpass, highpass, bandpass, and notch. Each of the two filter slots can run a different one. Serial, parallel, and true stereo routing. Run the filters one into the next, side by side, or split hard left and right. Envelope follower with stereo sidechain. Drive the cutoff from a signal's own dynamics for auto-wah, or feed in an external source so one track opens the filter on another. LFO with twelve patterns, internal or tempo-synced. VCA mode for tremolo and gating. FSU section for extra signal hacking, for when clean is not the point. Resizable vector interface, sharp on every iPhone and iPad display. Universal preset system. XML-based presets move between iOS and the desktop versions. IN USE... Sweep the cutoff by hand for filter rises and drops. Set the envelope follower to track the input for an auto-wah that moves with your playing. Patch a kick into the sidechain to duck a pad or bassline in time. Run the two filters in series for steep formant shapes, or in parallel for wide dual-band sweeps. Tempo-sync the LFO for rhythmic gating, then bring in the FSU section when the part needs to fall apart. Filterstation 2 runs as an AUv3 plugin inside any compatible iOS host, including AUM, Cubasis, Drambo, apeMatrix, and GarageBand. It is also available for macOS, Windows, and Linux as a desktop plugin, and presets move freely between them. Requires iOS 13 or later. An AUv3 host app is recommended. Features • Twelve different filter algorithms, including MS20 emulation and our classic 914 bandpass and Filterpod lowpass models. • VCA mode for tremolo and gate effects. • LFO with twelve different patterns, and both internal and tempo sync modes. • Envelope follower for dynamic control of filter frequency. • Serial, parallel, and true stereo operating modes. • Easy-to use interface for quick programming. • Vector-based resizable GUI. Use just the filter screen, slide the controls over it, or (in hosts that allow it) open up the whole UI. • Cross-platform XML-based preset manager; copy your desktop presets to the iOS version using Handoff, or share them with your friends and in forums. • Full PDF manual available at Support link.

About

VOSIS Pro

Transform images into unique sounds and compose visual music. This tool offers advanced filters and MIDI control for experimental sound design and creative audio manipulation.

Highlights
  • Image to sound conversion
  • Advanced image filters
  • MIDI keyboard support
  • Customizable presets
  • Unlimited recording
  • Video file loading (iPad/Desktop)
Features
Read full description

VOSIS is a synthesizer combining audification of greyscale pixel data with several image filters. It is a tool for image sonification, visual music composition, and experimental sound design. The audification of pixel luminance values creates shape-timbre relationships. Pixel scan rate is controlled in terms of note interval, octave, and scale to give varying pitch between image regions. The ADSR envelope allows one to play images as a non-linear sequence of pitches with varying wavetable/timbre. VOSIS Pro adds several features to VOSIS useful for sound designers and musicians: Save and load custom presets, connect a MIDI keyboard and play regions with keys, map any control and region positions to MIDI CC, unlimited recording and screen mirroring with no watermark, downsampling/blur/sharpen, and tremolo filters, subdivide large regions into step sequence mode, load video files (iPad and Desktop versions only). Visit vosis.app for sound example, demo videos, and user guide!

Screenshots

Filterstation22 screens
VOSIS Pro3 screens

Verdict

The call

The clearest difference is update cadence: VOSIS Pro at every 3 months against Filterstation2's every 19 months. Filterstation2's advantage is price ($1.99 vs $7.99) and review sentiment (75% vs 67%). On rating, ratings volume, ads and in-app purchases 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

Filterstation2 costs $1.99 and VOSIS Pro $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.4 for Filterstation2 against 4.6 for VOSIS Pro. Both are backed by a comparable volume of ratings — 18 and 7 respectively. Written reviews are what separate them: 75% of Filterstation2's written reviews are positive against 67% of VOSIS Pro's.

UpkeepUpdate frequency

Filterstation2 ships an update every 19 months, VOSIS Pro every 3 months. The most recent releases landed on November 11, 2026 and November 7, 2026 respectively.

Scorecard3 real differences · 7 level
Filterstation2 versus VOSIS Pro: the parameters behind the verdict, then further details
ParameterFilterstation2VOSIS Pro
Price$1.99 — better$7.99
Rating4.4 (18 ratings)4.6 (7 ratings) — better
Positive reviews75.0% of reviews — better66.7% of reviews
Number of ratings18 — better7
Update frequencyEvery 19 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS12.0 — better13.0
Further details — not scored
Size29 MB12 MB
Age rating4+4+
DeveloperAudio Damage, Inc.Life Orange LLC

Customer experience

Filterstation2

All ratings19 ratings
Positive84.2%
Neutral5.3%
Negative10.5%
Written reviews12 reviews
Positive75.0%
Neutral8.3%
Negative16.7%

VOSIS Pro

All ratings7 ratings
Positive85.7%
Neutral14.3%
Negative0.0%
Written reviews12 reviews
Positive66.7%
Neutral25.0%
Negative8.3%

In-app purchases

None

Filterstation2

No in-app purchases

None

VOSIS Pro

No in-app purchases

Questions

Is Filterstation2 free?
Filterstation2 costs $1.99, with no in-app purchases.
Is VOSIS Pro free?
VOSIS Pro costs $7.99, with no in-app purchases.
Which has better reviews, Filterstation2 or VOSIS Pro?
VOSIS Pro is rated higher. Filterstation2 averages 4.4 out of 5 from 18 ratings, while VOSIS Pro averages 4.6 from 7 ratings.
Do Filterstation2 or VOSIS Pro have ads?
Neither Filterstation2 nor VOSIS Pro shows ads.
Which is updated more often, Filterstation2 or VOSIS Pro?
Filterstation2 ships an update every 19 months, and VOSIS Pro every 3 months. Most recently, Filterstation2 was updated on November 11, 2026 and VOSIS Pro on November 7, 2026.

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