Comparison

ShockWave vs BLEASS Alpha Synthesizer

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

Head to head
About

ShockWave

This app is a monophonic synthesizer for iOS and AUv3 plugins, utilizing Phase Distortion synthesis. It offers dual PD oscillators, sequencers, LFOs, and envelopes for complex sound design. Almost any control can be modulated by multiple sources, with real-time visual feedback.

Highlights
  • Phase Distortion Synthesis
  • Dual PD Oscillators
  • Dual 8-step Sequencers
  • Dual ASR Envelopes
  • Tempo-syncable LFOs
  • Extensive Modulation Matrix
  • MIDI and MPE Support
Features
Read full description

ShockWave is a monophonic Synthesizer designed to bring modular style workflow to the world of iOS & AUv3 plugins. Built around the concept of Phase Distortion (PD) Synthesis, Shockwave includes a pair of PD Oscillators each capable of creating everything from pure Sine Waves over smooth Sawtooth and Square Waves to Resonance & Sync sweeps, filtered Noise and more. In addition to the Synth Voice, ShockWave includes a dedicated control section housing a pair of 8 step sequencers, a sample & hold module as well modules for trigger divisions, logic comparisons and controlled randomness. A pair of Low Frequency Oscillators and 2 Attack/Sustain/Release (ASR) Envelopes serve as main modulation sources and can be used in a number of ways. Envelopes can be triggered from a number of internal sources including other modules such as trigger divider, logic or chance module but can also be connected to each other allowing for a wide range of patches usually only possible in large modular systems. LFOs are individually tempo sync-able and capable of producing total of 5 different waveforms each. The two sequencers can run independently or combine to one 16 step sequence where rate and length can be controlled independently for each of the two. In true modular nature almost any control within ShockWave can be modulated with up to 11 sources - simultaneously. Modulations are setup simply by holding a control and dialling in the desired amount in a list of all available sources. A special X-Ray mode adds a realtime display of all currently active modulations right at their corresponding control making it easy to understand what's happening inside the synthesizer at any given time. Synth Voice and Control Section are accompanied by built-in Delay and Reverb sections placed on send busses with all of their controls including the send levels being available as mod destinations. Last but not least, ShockWave features a solid MIDI implementation including support for, aftertouch, velocity, wheels, custom CC mappings and up to 4 dimensions of expression when using MPE compatible controllers, such as the Roli Seaboard, Linnstrument, Geoshred, KB-1 and others. MIDI Output is supported as well and includes Note and Control Change output generated from various internal sources including Sequencers, Envelopes and LFOs making it possible to control external MIDI gear or chain multiple plugin instances for advanced, self driving patches. Overview: - Semi Modular Monophonic Synth Voice - Phase Distortion Synthesis (PD) - Dual PD Oscillators with 5 Waveforms + Noise - Dual ASR Envelopes with variable trigger source - Dual LFO with Tempo Sync - Cross Modulation with Linear/Exp. FM, PM, AM & RM - Mixer section with individual pan and level controls per oscillator - Output VCA with variable control source - Pattern Generator for generating sequences from various internal sources - Quantizer to force note input into a specific scale (19 Scales + User Scales) - Step Sequencer with 2x8 or 1x16 steps, individual rate and number of steps per row - Trigger Divider for dividing internal trigger sources - Probability Gate for adding controlled randomness - Sample & Hold for additional randomness - Logic Module to create triggers from various internal sources - Built-in Delay & Reverb Effects - MIDI Note and CC output for controlling external gear or chaining multiple instances - Semi Modular Architecture - 11 Modulation Sources - 40 Modulation Destinations - 2 Color Themes MIDI Input: - 4D Expression (Glide, Slide, Pressure & Velocity) - Mod & Pitch-Wheel - Tempo Sync - Custom CC Control MIDI Output: - Note - Control Change Connectivity: - Standalone - AUv3 - AudioBus - IAA

About

BLEASS Alpha Synthesizer

This versatile polyphonic synthesizer offers a virtual analog sound engine inspired by classic hardware. It provides intuitive sound design tools, efficient CPU usage, and a unique motion sequencer for expressive modulation. Explore a vast library of presets and create unique sounds for your music.

Highlights
  • Virtual analog polyphonic stereo synthesizer
  • Intuitive sound design interface
  • CPU efficient for live performance
  • Unique motion sequencer
  • Built-in arpeggiator
  • Over 200 factory presets
  • Audio Unit V3 compatible
Read full description

BLEASS Alpha Synthesizer is a versatile virtual analogue polyphonic synthesizer built for immediate, hands-on sound design. Its three oscillators combine variable waveshapes and pulse widths with unison, hard sync, cross modulation and ring modulation, while dual variable-state filters with drive add further colour and character. The streamlined interface follows the natural signal path, keeping powerful synthesis controls accessible at a glance. Bring sounds to life with three ADSR envelopes, two multi-waveform LFOs and extensive modulation possibilities, while the Motion Sequencer adds rhythmic and expressive movement that can work hand in hand with the built-in arpeggiator. MPE support extends the performance possibilities, and BLEASS' efficient audio engine keeps the experience smooth and responsive on mobile devices. A complete built-in effects section includes Overdrive, Bitcrusher, Tremolo, filtered ping-pong Delay and Reverb, adding everything from subtle movement to more radical processing directly within the synth. More than 200 factory presets provide ready-to-play sounds and starting points for your own creations. BLEASS Alpha Synthesizer can be used as a standalone app or AUv3 instrument on iPhone and iPad. Also available for Windows and macOS. More information and technical specifications available on: https://www.bleass.com/alpha/

Screenshots

ShockWave4 screens
BLEASS Alpha Synthesizer4 screens

Verdict

The call

The clearest difference is in-app purchases: ShockWave at none against BLEASS Alpha Synthesizer's 10. BLEASS Alpha Synthesizer's advantage is review sentiment (86% vs 54%) and price ($14.99 vs $19.99). On ratings volume, update cadence, ads 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

ShockWave costs $19.99 and BLEASS Alpha Synthesizer $14.99 up front. BLEASS Alpha Synthesizer sells 10 one-off in-app purchases. ShockWave asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

BLEASS Alpha Synthesizer holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 188 and 108 respectively. Written reviews point the same way: 54% of ShockWave's written reviews are positive against 86% of BLEASS Alpha Synthesizer's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 14, 2026 and October 16, 2026 respectively.

Scorecard5 real differences · 5 level
ShockWave versus BLEASS Alpha Synthesizer: the parameters behind the verdict, then further details
ParameterShockWaveBLEASS Alpha Synthesizer
Price$19.99$14.99 — better
Rating4.6 (188 ratings)4.9 (108 ratings) — better
Positive reviews54.0% of reviews86.1% of reviews — better
Number of ratings188 — better108
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size42 MB38 MB
Age rating4++4
DeveloperKai ArasBLEASS

Customer experience

ShockWave

All ratings188 ratings
Positive89.9%
Neutral2.7%
Negative7.4%
Written reviews63 reviews
Positive54.0%
Neutral11.1%
Negative34.9%

BLEASS Alpha Synthesizer

All ratings108 ratings
Positive97.2%
Neutral1.9%
Negative0.9%
Written reviews36 reviews
Positive86.1%
Neutral11.1%
Negative2.8%

Bugs and requests

ShockWave

Reported bugs

20 issues
  • "Bad Signal" errors in AUM, stops sound generation.
  • Intermittent "bad signal" prompt in AUM, requires reloading.
  • Sounds awful, very distorted with glitchy UI.
  • App crashes frequently.
  • No sound coming out of AUv3 in GarageBand.
Show 15 more
  • More than half of the sounds do not play.
  • Performance remains but synth loads blank when returning to work after closing.
  • App stops producing sound after a few minutes of use.
  • Preset browser causes the app to stop producing sound.
  • No audio output on iPhone 6 & 7 plus, sometimes noise when changing presets, keyboard doesn't work.
  • Randomize button not viewable on iPhone 6.
  • App crashes when returning to a project.
  • App crashes on the loading screen on iPhone 11, but works on iPhone 7.
  • Hangs and freezes, won't load/work in AUM or GarageBand.
  • Horribly laggy, almost unusable.
  • Volume is noisy and glitchy.
  • Response on dials needs more work.
  • Modulation tab issues, unable to turn other knobs properly.
  • DAW incompatibility issues.
  • App crashing, won't even load.

Requested features

6 requests
  • Provide a proper manual detailing all parameters and sections with examples.
  • Implement a key trigger option for the sequencer to allow MIDI controller playback.
  • Add a poly mode.
  • Improve documentation and tutorials.
  • Standardize knob appearance and response.
Show 1 more
  • Increase the number of available patches beyond 128.

BLEASS Alpha Synthesizer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

ShockWave

No in-app purchases

10 purchases

BLEASS Alpha Synthesizer

One-time10
  • Sound Of Izrael Preset Pack$2.99
  • Red Sky Lullaby Preset Pack$2.99
  • MPE Preset Pack #1$3.99
Show 7 more
  • Lily Jordy Preset Pack$3.99
  • The GarageBand Guide Pack$3.99
  • Hoops Collection #1$3.99
  • Yawdel Preset Pack$3.99
  • Funk Preset Pack$3.99
  • Torley Preset Pack$4.99
  • The Sound Test Room Pack$4.99

Questions

Is ShockWave free?
ShockWave costs $19.99, with no in-app purchases.
Is BLEASS Alpha Synthesizer free?
BLEASS Alpha Synthesizer costs $14.99, and also offers in-app purchases.
Which has better reviews, ShockWave or BLEASS Alpha Synthesizer?
BLEASS Alpha Synthesizer is rated higher. ShockWave averages 4.6 out of 5 from 188 ratings, while BLEASS Alpha Synthesizer averages 4.9 from 108 ratings.
Do ShockWave or BLEASS Alpha Synthesizer have ads?
Neither ShockWave nor BLEASS Alpha Synthesizer shows ads.
Which is updated more often, ShockWave or BLEASS Alpha Synthesizer?
ShockWave ships an update every 2 months, and BLEASS Alpha Synthesizer every 2 months. Most recently, ShockWave was updated on October 14, 2026 and BLEASS Alpha Synthesizer on October 16, 2026.

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