Comparison

Filterstation2 vs BLEASS Phase Mutant

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

BLEASS Phase Mutant

This music app applies frequency modulation to any audio source, creating complex harmonic distortions and expressive tonal variations. It offers unique modern effects for vocals, basses, leads, and percussion, with advanced modulation options.

Highlights
  • Frequency Modulation (FM) synthesis for audio sources
  • Modulate input signal with an oscillator or vice versa
  • Complex harmonic distortions and tonal variations
  • Pitch-tracking oscillator with adjustable waveforms
  • Stereo field spreading via phase offset
  • 2 LFOs, Envelope Follower, and Motion Sequencer
  • Modern effects for vocals, basses, leads, and percussion
Read full description

Developing BLEASS Omega gave us the perfect opportunity to take a deep dive into the fascinating sonic capabilities of FM synthesis, and this sparked an innovative idea: A plugin that can apply the principles of frequency modulation to literally any source material. The result is BLEASS Phase Mutant. Where existing phase distortion plugins create their effect by using an audio signal to modulate itself, BLEASS Phase Mutant takes things to an entirely new level with the addition of an oscillator that can modulate the input signal or be modulated by it. This allows BLEASS Phase Mutant to fully harness FM’s ability to create complex and colourful harmonic distortions, achingly expressive tonal variations, and fascinating sonic hooks. BLEASS Phase Mutant’s oscillator tracks the input signal’s pitch, or can be set to a factor of that input pitch. It can also produce a range of different waveforms, all of which can be spread across the stereo field by offsetting the phase of left and right channels. In combination, these abilities open up a whole new universe of unique, modern-sounding effects that are perfect for vocals, basses, arpeggios and leads. You’re going to love what BLEASS Phase Mutant can do to your drum and percussion parts too! BLEASS Phase Mutant also offers 2 LFOs, an Envelope Follower and a Motion Sequencer with multiple modulation destinations, which you can easily visualize. BLEASS Phase Mutant is also available for Mac & Windows. Find more information and tutorials on https://www.bleass.com/phasemutant/

Screenshots

Filterstation22 screens
BLEASS Phase Mutant4 screens

Verdict

The call

The clearest difference is update cadence: BLEASS Phase Mutant at every 3 weeks against Filterstation2's every 19 months. BLEASS Phase Mutant also leads on rating (4.7 vs 4.4). Filterstation2's advantage is price ($1.99 vs $4.99). On review sentiment, 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 BLEASS Phase Mutant $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

BLEASS Phase Mutant holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 18 and 27 respectively. Written reviews split almost evenly too, at 75% and 75% positive.

UpkeepUpdate frequency

Filterstation2 ships an update every 19 months, BLEASS Phase Mutant every 3 weeks. The most recent releases landed on November 11, 2026 and November 7, 2026 respectively.

Scorecard3 real differences · 7 level
Filterstation2 versus BLEASS Phase Mutant: the parameters behind the verdict, then further details
ParameterFilterstation2BLEASS Phase Mutant
Price$1.99 — better$4.99
Rating4.4 (18 ratings)4.7 (27 ratings) — better
Positive reviews75.0% of reviews75.0% of reviews
Number of ratings1827 — better
Update frequencyEvery 19 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.011.0 — better
Further details — not scored
Size29 MB23 MB
Age rating4+4+
DeveloperAudio Damage, Inc.BLEASS

Customer experience

Filterstation2

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

BLEASS Phase Mutant

All ratings27 ratings
Positive92.6%
Neutral0.0%
Negative7.4%
Written reviews4 reviews
Positive75.0%
Neutral25.0%
Negative0.0%

In-app purchases

None

Filterstation2

No in-app purchases

None

BLEASS Phase Mutant

No in-app purchases

Questions

Is Filterstation2 free?
Filterstation2 costs $1.99, with no in-app purchases.
Is BLEASS Phase Mutant free?
BLEASS Phase Mutant costs $4.99, with no in-app purchases.
Which has better reviews, Filterstation2 or BLEASS Phase Mutant?
BLEASS Phase Mutant is rated higher. Filterstation2 averages 4.4 out of 5 from 18 ratings, while BLEASS Phase Mutant averages 4.7 from 27 ratings.
Do Filterstation2 or BLEASS Phase Mutant have ads?
Neither Filterstation2 nor BLEASS Phase Mutant shows ads.
Which is updated more often, Filterstation2 or BLEASS Phase Mutant?
Filterstation2 ships an update every 19 months, and BLEASS Phase Mutant every 3 weeks. Most recently, Filterstation2 was updated on November 11, 2026 and BLEASS Phase Mutant on November 7, 2026.

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