Audulus 4

Audulus 4

A Universe of Sound

57 ratings
70 reviews
$19.99 Free
In-App Purchases

Price history


Details

  • Released
  • Updated
  • December 12, 2022
  • December 11, 2025

Features

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About

Create and shape sounds with a professional-grade modular synthesizer environment. Explore a vast library of modules for synthesis and sound design, with the option to expand your toolkit with premium instruments and effects. Available across Apple devices for seamless workflow.

Modular synthesizer environment
Sound design tools
Real-time audio shaping
Extensive module library
Premium Pro Modules (in-app purchases)
Cross-device iCloud sync
AUv3 plugin support
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What users say

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What's New in Audulus 4

4.7

December 11, 2025

Audulus is now completely free — professional modular synthesis for everyone. This is the full environment. Build anything. Explore freely. No limits, no cost. Extend your setup with Pro Modules — meticulously-designed instruments and effects that push the boundaries of modular sound design. New in This Version: • Free for everyone — the complete Audulus experience • Now on iPhone — pocket-sized modular power • Pro Module series — premium expansions built for Audulus • New Lua message protocol for vector graphics — faster, richer graphics • Many refinements and performance improvements Your modular journey starts now.

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Subscription plans

Audulus Pro (1 Year)

Yearly subscription to Audulus Pro

$29.991 Year
7 Days trial
How to cancel Audulus 4 subscription ⁉️
6

In-App Purchases

$29.99

Patch Editing

Unlocks editing of documents.

User reviews

Among the best yet confused

Update: This, mi rack and Drambo are my top 3 Modular’s. This has a unique flair and great ui. I do have problems with the deceptive free thing. I get your point on the previous model(3) stuff is there. But it really promotes and shines when you have the the iap, which are not bundled correctly, some are close, but many of them really need to be either free( like the everything’s free title), or in proper iap collection/logical method. I bought a few iap and then I could open a demo project that needed another clock iap to show how good it “can get” . As a basic example I can only use Version 3 as then I can open those lessons or patchstorage etc. so despite my complaints I guess it’s cause I feel the argument for the new all free version really hurts this. I know you can rock it as is with no iap but then you can’t demonstrate any great patches right from the start, in that regard I feel 3 is way better. Audulus could be the best with some changes. Last thing: version 3 runs perfect and no crashes. Version 4 eats cpu and also just not solid with clock audio stutters. I know it’s because newer version is probably got ace stuff under the hood and my iPad lil old so maybe that one is on me ha. Don’t mean bad vibes though , I can stay happy with 3 and it’s still a beast.
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Pretty phenomenal lego arsenal of a sound constructor set... Awesome

This is pretty amazing ND NOW WITH ALL THE GOODIES BUILT IN, I am literally amazed with the potential madness at my fingertips...

almost perfect app

everything is working great! the only issue I have is Im unable to upload any files to the memory node with my phone. other than that the app is really cool

Make sure you are on iOS 18 or higher

Audulus is an amazing audio app! Sadly, I cannot yet benefit from the updated version until I upgrade to a device that supports iOS 18+

How many times are you going to try to get me to pay for this!?

I’ve loved Audulus for a long time, I bought Audulus 3, I bought Audulus 4….went to use it after a while and now everything is behind a paywall again! I go to add a function generator it’s 9.99 for a pack of them I go to add a filter it’s another 9.99 for a filter pack? This is ridiculous! I’ve paid for this app twice already and now I’m expected to pay yet again but only this time pay piece by piece. I can’t justify supporting getting gouged and recharged like this regardless if it’s good or not…unless this is fixed I’m dropping Audulus and will just have to stick with MiRack.
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Developer apps

User experience

🐞

Reported Bugs

13 issues

iOS 18 compatibility issues (app not working)

Bug

Save presets but no 'Load' button

Bug

Undo command issues with DAWs

Bug

CMD+Z causing data loss

Bug

Opt+drag not duplicating modules

Bug

Plugin window not resizable

Bug

Menu filtering not functioning properly on iPhone

Bug

Select and Import buttons not working

Bug

Blank screen on open

Bug

App freezes on iPad Pro

Bug

Black screen on launch after update

Bug

No modules appearing after iOS 18 update

Bug

Patches not appearing after iOS 18 update

Bug

Requested Features

7 requests

Add 'Load' button for presets

Feature

Improve DAW integration (Undo, duplicate)

Feature

Resizable plugin window

Feature

More modules (FFT/IFFT, granular buffering)

Feature

Add CC in module

Feature

Sync to host as AUv3

Feature

Make upgrade path clearer from Audulus 3

Feature

FAQ

What is Audulus 4?

Audulus 4 is a powerful modular synthesizer and sound design environment that allows users to build synthesizers, design sounds, and shape audio in real time. It offers a professional-grade, low-latency performance suitable for live use and complex audio manipulation.

What are the key features of Audulus 4?

Key features include a complete modular environment, a deep node library for building from scratch, an extensive module library for synthesis and sound design, multi-channel signal flow, next-gen multi-core audio processing, MIDI I/O, and GLSL shader node for visuals. It also supports Lua scripting for custom DSP and graphics.

How much does Audulus 4 cost?

The core Audulus 4 application is free to download and explore, providing a complete modular environment. Premium modules, known as the Pro Module series, are available as in-app purchases, offering additional instruments and effects to expand your sonic toolkit.

What devices is Audulus 4 compatible with?

Audulus 4 is available on iPhone, iPad, and Mac. Your modular system syncs across these devices via iCloud, allowing you to continue your work seamlessly wherever you are.

What are some common use cases for Audulus 4?

Audulus 4 is ideal for creating unique synthesizer patches, designing custom sound effects, experimenting with complex audio routing, and performing live electronic music. Its modular nature makes it suitable for both beginners exploring sound synthesis and advanced users crafting intricate audio systems.