Agonizer

Agonizer

It's a badman thing

201 ratings
79 reviews
$19.99
In-App Purchases

Details

  • Released
  • Updated
  • November 11, 2020
  • May 21, 2026
Agonizer screenshot #1 for iPhone
Agonizer screenshot #2 for iPhone
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Agonizer screenshot #4 for iPhone
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Agonizer screenshot #6 for iPhone
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About

This app is a monophonic synthesizer focused on bass sounds, developed with a synth bass expert. It features dual wavetable oscillators, a mangle section, and built-in stereo effects. It supports MPE controllers and various audio/MIDI connectivity options for standalone or app-to-app use.

βœ“Monophonic synth engine for bass
βœ“Dual wavetable oscillators
βœ“Built-in stereo effects
βœ“MPE controller support
βœ“Standalone and AUv3 operation
βœ“140+ factory presets
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What users say

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What's New in Agonizer

1.3.1

May 21, 2026

- Fixed an issue where the plugin would randomly crash when loading large host sessions - Fixed an issue where MIDI mapping parameters in AUM would not work properly

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24

In-App Purchases

$4.99

Neon Nightmare Pack

100 Cyberpunk inspired presets from Jakob Haq

User reviews

sounds great but serious;y lacks in polish

the freaking keyboard is not working like a typical mono-synth keyboard should, very frustrating, sometimes works, sometimes doesn’t, what are you guys thinking, any keyboard if you hold a key down and you play an other note will play the last note pushed, not this one! πŸ€¦πŸ»β€β™‚οΈ even of you set this in the setting still not doing it in many cases, the wobbulater is also kind of a disappointment, a great idea poorly executed that limits it’s usefulness and locks you in into a weird button pushing slow workflow, why can’t we draw an envelope, why do we have to choose from preset envelopes and why not a menu, why do I have to cycle though the choices? makes no sense too me… also, why do I have to push buttons to go from one waveform to an other, why not a menu where I see what is available and choose without cycling through all of them, you can keep the buttons if you like that and give a menu too! An other thing, why keep it strictly a monosynth and cut out a whole world of creative opportunity, why don’t you just put a button to switch from mono the poly like any other synth does, after all this is not a hardware synth, it’s a freaking digital synth, why limit it in such a drastic way? It’s just many weird choices in UX and logic that makes 0 sense to me… really guys, did you think this through? I don’t think so. If you fix these weird choices it could be a great synth, right now it is a bunch of frustrations bundled together that slows down the workflow down and some makes you want to ditch the whole thing… what a pity since the sounds it can make is actually good. Fix this please!
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Uhmmmmmm

If haq attack actually used this app for more than a video tutorial, there’s no way he would think this is somehow flawless and good?

No sound in GarageBand

When i opening this synth in garageband, it disables all sound in GB and it recovering after deleting Agonizer’s track. 100% repro, iphone 12

One of my favorites

Just a note. It seems iOS 18.3 has caused some problems with Agonizer. It gets stuck on the splash screen. I’ve tried resetting the iPad and re-downloading the app. Hope an update is in the works. I’ll revise my review.

Quit Hunting for a Bass App!

Speechless! Great work and an excellent product! Thanks dudes! Worth every dime!

Developer apps

User experience

🐞

Reported Bugs

16 issues

Keyboard does not properly handle legato/mono-synth note priority

Bug

Crashes in Audiobus, AUM, and Cubasis host applications

Bug

No sound output when used as AUv3 plugin in hosts

Bug

No sound in GarageBand integration

Bug

App freezes on splash screen with iOS 18.3

Bug

Stuck notes and failed note triggering

Bug

Scream button malfunction when switching presets

Bug

Cutoff knob lag in AUv3 scenarios

Bug

UI jitter and text cutoff on iPhone

Bug

Favorite preset feature not working on iPhone

Bug

Program change not working properly in hosts

Bug

Always opens with init preset in host applications

Bug

Modulation matrix sensitivity too high (2% movement = large range)

Bug

Audio output peaks in red with no sound

Bug

Permanent clipping/damaged audio output

Bug

Misleading IAP pricing display (showing 'FREE' for paid content)

Bug
✨

Requested Features

10 requests

Polyphony mode or toggle between mono and poly

Feature

Envelope drawing capability instead of preset selection

Feature

Menu-based waveform selection instead of cycling

Feature

Arpeggiator function

Feature

Preset browser search and favorites filter

Feature

Extended automation control for all knobs

Feature

Keytracking for filter

Feature

Reverb effect

Feature

Accelerometer/gyroscopic velocity sensitivity

Feature

Customizable number of keyboard keys

Feature

FAQ

What is Agonizer?

Agonizer is a monophonic synthesizer specifically designed for bass sounds. It was developed in collaboration with synth bass expert Jakob Haq. The app offers a robust synth engine with dual wavetable oscillators, a mangle section, and built-in stereo effects, making it suitable for a wide range of bass sound design.

What are the key features of Agonizer?

Key features include a monophonic synth engine focused on bass, dual wavetable oscillators with morphing and X-Mod, a mangle section for sound manipulation, a VA ladder filter, and a Wobulator for sequenced LFO effects. It also boasts 140+ factory presets, stereo effects like vintage chorus and digital delay, and extensive connectivity options.

How much does Agonizer cost?

The application is available for free with in-app purchases. This model allows users to explore the app's core functionality before deciding to invest in additional features or content.

What are the compatibility requirements for Agonizer?

Agonizer requires iOS 12 or newer and is compatible with iPad Air 2 or newer devices. It supports standalone operation, Audio Unit v3 Extension, Inter App Audio, and Audiobus, providing flexibility for integration into various mobile music workflows.

Who is Agonizer designed for?

This app is ideal for electronic music producers, sound designers, and synth enthusiasts who are looking for a powerful and versatile monophonic synthesizer. Its focus on bass sounds, MPE controller support, and extensive connectivity options make it a valuable tool for creating deep and complex basslines.