Comparison

BLEASS Phase Mutant vs Big Swarma

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

Head to head
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/

About

Big Swarma

Transform audio into massive, detuned swarms with up to 16 voices. Features adjustable detune, stereo width, and pitch modulation for unique textures. An intense feedback circuit and dual MS20-style filters offer further sound sculpting capabilities.

Highlights
  • Voice multiplier up to 16 voices
  • Adjustable detune, stereo width, pitch modulation
  • Intense feedback circuit
  • Dual MS20-style filters (HPF/LPF)
  • Resonance and master cutoff controls
  • Raw analog character
Features
Read full description

Big Swarma is a powerful voice multiplier and feedback unit designed to transform any audio into massive, detuned swarms. Multiply your signal up to 16 voices with adjustable detune, stereo width, and pitch modulation for lush unisons, aggressive textures, or shimmering drones. Push it further with an intense feedback circuit capable of self-oscillation and FM harmonic mayhem. Sculpt your swarm with dual MS20-style filters (HPF and LPF), each with dedicated resonance controls and a master cutoff knob. Big Swarma delivers a raw, analog character driven by aggressive feedback and wild modulation, for a sound that hits you in the face.

Screenshots

BLEASS Phase Mutant4 screens
Big Swarma1 screens

Verdict

The call

The clearest difference is price: BLEASS Phase Mutant at $4.99 against Big Swarma's $14.99. BLEASS Phase Mutant also leads on ratings volume (27 vs 6) and iOS requirement (11.0 vs 14.0). Big Swarma's advantage is review sentiment (100% vs 75%) and rating (5.0 vs 4.7). On ads, in-app purchases, monetization model and device support 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

BLEASS Phase Mutant costs $4.99 and Big Swarma $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Big Swarma holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 27 and 6 respectively. Written reviews point the same way: 75% of BLEASS Phase Mutant's written reviews are positive against 100% of Big Swarma's.

UpkeepUpdate frequency

BLEASS Phase Mutant ships an update every 3 weeks, Big Swarma every 10 days. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

Scorecard6 real differences · 4 level
BLEASS Phase Mutant versus Big Swarma: the parameters behind the verdict, then further details
ParameterBLEASS Phase MutantBig Swarma
Price$4.99 — better$14.99
Rating4.7 (27 ratings)5.0 (6 ratings) — better
Positive reviews75.0% of reviews100.0% of reviews — better
Number of ratings27 — better6
Update frequencyEvery 3 weeksEvery 10 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better14.0
Further details — not scored
Size23 MB20 MB
Age rating4+4+
DeveloperBLEASSAudiority Srl

Customer experience

BLEASS Phase Mutant

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

Big Swarma

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

BLEASS Phase Mutant

No in-app purchases

None

Big Swarma

No in-app purchases

Questions

Is BLEASS Phase Mutant free?
BLEASS Phase Mutant costs $4.99, with no in-app purchases.
Is Big Swarma free?
Big Swarma costs $14.99, with no in-app purchases.
Which has better reviews, BLEASS Phase Mutant or Big Swarma?
Big Swarma is rated higher. BLEASS Phase Mutant averages 4.7 out of 5 from 27 ratings, while Big Swarma averages 5.0 from 6 ratings.
Do BLEASS Phase Mutant or Big Swarma have ads?
Neither BLEASS Phase Mutant nor Big Swarma shows ads.
Which is updated more often, BLEASS Phase Mutant or Big Swarma?
BLEASS Phase Mutant ships an update every 3 weeks, and Big Swarma every 10 days. Most recently, BLEASS Phase Mutant was updated on November 7, 2026 and Big Swarma on October 30, 2026.

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