---
title: "Audulus 4 - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "Build synthesizers. Design sounds. Shape audio in real time. All with professional-grade, low-latency performance ready for live use — and it’s free.  Audulus gives you a complete modular environment "
---

# Audulus 4 — United States
> A Universe of Sound

![Audulus 4 App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/4b/25/0c/4b250cfc-3eec-184e-a4cd-cb114f3671e4/AppIcon-0-0-1x_U007emarketing-0-8-0-85-220.png/434x0w.png)

**Developer:** [Audulus](https://apptail.io/developer/audulus-nhT) (United States)
**Category:** Music
**Rating:** 4.6/5 (57 ratings)
**Price:** Free
**Bundle ID:** com.audulus.audulus4
**Store:** Apple App Store
**Country:** United States
**Version:** 4.7 (released 2025-12-11)
**Original Release:** 2022-12-12
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id1592022030)
**AppTail Page:** [https://apptail.io/app/audulus-4-dXck/united-states](https://apptail.io/app/audulus-4-dXck/united-states)

## Audulus 4 Description
Build synthesizers. Design sounds. Shape audio in real time. All with professional-grade, low-latency performance ready for live use — and it’s free.

Audulus gives you a complete modular environment at no cost. Its clean, fluid interface stays out of the way so you can focus on what matters: exploring sound. A modular playground with room to grow — from first experiments to advanced designs.

Looking for more? Discover the Pro Module series: premium instruments and effects that show what’s possible when world-class sound design meets true modular freedom. Each Pro Module is crafted specifically for Audulus, giving you new ways to expand your sonic toolkit.

Available on iPhone, iPad, and Mac — your modular system travels with you.

▶ What People Are Saying:

&quot;gem for Apple platforms – gorgeous, fluid&quot; — Peter Kirn, createdigitalmusic.com
&quot;stunning!&quot; — Richard Devine, devinesound.net
&quot;Remarkable gesture control&quot; — sequencer.de

▶ Join our forum and Discord community!

▶ What You Get:

• Complete modular environment — free to download and explore
• Pro Module series — premium modules available as in-app purchases
• Available on iPhone, iPad, and Mac with iCloud sync
• Standalone app or AUv3 plugin
• Deep node library for building from scratch
• Extensive module library for synthesis and sound design
• Multi-channel signal flow for polyphony and complex routing
• Next-gen multi-core audio processing
• Smooth, high-performance graphics even with massive patches
• MIDI I/O with MIDI learn
• GLSL shader node for creating advanced visuals
• Lua scripting for custom DSP and vector graphics

Terms of Use: 

## Audulus 4 Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/46/b0/10/46b010d8-3b48-7b94-a4a5-2d0d9055568f/canvas_collection.png/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/cf/c8/03/cfc80391-0ca2-46cc-33ee-b9d07545a6b1/synths.png/1242x2688.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/ea/e5/46/eae54673-1cd6-fa3f-113c-6aef09abe6c1/sequencers.png/1242x2688.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/fd/17/75/fd177546-6526-4b4c-8360-33883539a27c/controllers.png/1242x2688.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/ae/ba/2a/aeba2a01-9f79-d149-fc3b-4f29dd0c67bf/IMG_7896.png/1242x2688.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/08/10/62/0810620c-abe5-497b-dc63-93e2c09bcf96/circuit.png/1242x2688.png)
- [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/6e/5d/08/6e5d08dd-5a7b-e4c0-dbff-39af95fbb391/graincloud_WTA.png/1242x2688.png)
- [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/ea/b5/64/eab564af-4fdb-75e3-3ac6-2ea42666d159/IMG_7844.png/1242x2688.png)
- [Screenshot 9](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/c9/f3/97/c9f397ee-c7c3-9b6d-a646-790f80a78625/knobs_skeuo.png/1242x2688.png)

## Audulus 4 Rating Breakdown in United States
- 5 stars: 47 (82%)
- 4 stars: 3 (5%)
- 3 stars: 3 (5%)
- 2 stars: 1 (2%)
- 1 stars: 3 (5%)

## Audulus 4 Reviews in United States

### ***** "IOS18 fixed"
All is right in the Audulus universe once again. I’ve been using this app for years, since version 3. It’s incredible to see the amount of effort put into version 4 which delivers an even richer and more satisfying creative experience, more modules to work with, improved workflow and a beautifully overhauled UI.
-- Me, I&#039;m Not, 2024-12-18

### ***** "Select and Import Buttons Do Not Work"
Fixed. Needed to update Audulus 4
-- ColinV., 2024-12-15

### ***** "Best modular synth on iOS"
This app is absolutely incredible and gives you all the tools you need to make literally any part of a synth if you want to get that involved. also an active community of people making patches so even if you just bought it to play with patches posted online, you’ve got virtually endless synths to play with.
-- Efgjjrxfgbbb, 2024-12-15

### ****- "Blank Screen On Open"
This was unfair. I was simply frustrated after dropping 20 bucks, expecting to play with something cool. I&#039;m gonna give them a chance to fix things. As a developer myself, I fully understand the challenges. I just really want to use the app!!

Original text:
Just purchased the app. When I open, I get a black screen. That&#039;s it. My ipad is up to date. What gives? 
Really hoping the developers are responsive. I&#039;ll update my review if they fix this right away.
-- joshuabc, 2024-10-31

### ***** "Doesn’t work at all in 18.1"
Opens to the file browser, no modules, nothing. Tried deleting and reinstalling, nothing. It worked in the past and I liked it, hope I can figure this out.
-- Briwil78, 2024-10-24

### ***** "Essential for Exploration and Experimentation"
It’s wayyyyy better than max/msp and costs a tiny fraction of the price. This app is truly a gift.
-- Amphoteres, 2024-02-17

### ****- "Quality but complex and intimidating"
This is a great app with a lot of manual controls that enable users to produce tha sound they want and are looking for. My only issue is, great work on tha Shepards tone btw, my only issue is that if u already aren’t familiar with sound construction this app can be intimidating and complex and may appear a bit scattered. Not for noobies. But if ur already familiar with sound design, this is fantastic and I do recommend. Thank you for building an incredible workstation.
-- Social_integer, 2023-12-20

### ***** "Still one of the best apps ever made for music production"
In the almost decade since firstly hearing about this app. I knew it was ahead of it’s time. Even back in 2015/2016 I was always amazed at how quickly forum questions get answered. You may even luck out and get a reply from one of the actual authors of this amazing software. That is unrivaled support. Show me another app where the creators themselves are actively taking part in discussion posts. I dare you to show me one app. For anybody who is ever complaining about the need for sideloading, simply making a backup of your device will virtually ensure your ability to download a previous version. I have 3 and 4 running on the same apple device no problems. I did run into issues with my license working for 3 but it was because it was purchased on someone else’s Apple ID. I digress with my pedal board not operational, it’s insane to me how treated a guitar will sound using just this one app. Absolutely one of my favorite ways to manufacture: REVERB. I am only ever using 1% of the capacity this app will furnish and the room it puts me in is large enough to stay lost for hours at a time. Thank you very much for making this app.
-- Infinitebreakfast, 2023-12-18

### ***** "A Visual Approach to Sound Design"
Audulus is a visual tool for creating and manipulating sound. With a large selection of fundamental nodes and an even larger set of library modules, Audulus provides a wide variety of building blocks to create almost any synth or audio effect you can imagine. An active user community provides user contributed patches and modules as well as helpful advice. Version 4 has added many new features such as a graphical canvas and DSP node programmable in Lua, a shader node, MIDI I/O and other enhancements. The app continues to improve with each update. Ten out of ten!
-- HammerDulcimer, 2023-12-14

### ***** "The Best Gets Even Better"
Audulus is a complete audio toolkit with a visually based approach to sound creation and modification. Version 4 adds a host of new functionality including MIDI output, new controls and enhanced graphical elements such as the canvas and shader node. Using the included library modules or building from scratch, it&#039;s possible to create virtual synths, audio effects, sequencers and a host of other audio creations. A new audio DSP node allows for direct Lua manipulation of the audio buffer. Outstanding!
-- HammerDulcimer, 2023-12-14

### ***** "Next Generation Modular Audio"
Audulus feels to me like the future of modular audio -- essential tools akin to best-in-class apps (max/msp, reaktor, etc.), fluid and powerful gui, seamless workflow across macOS and ipadOS, standalone or AUv3 plugin. Really is pro-level -- code my own DSP, design my own graphics, without all the extra the hassle that comes with the coding in C  . And now 4.3 includes multi-core processing -- a huge performance boost. My dream audio app, beautiful and deep.
-- jersmi0, 2023-12-11

### ***** "Amazing"
I love this app
-- AstroRaph, 2023-11-22

### ***** "So good"
Addictive and entrancing.  Nice nice!
-- Equality82, 2023-06-03

### *---- "Why no price on download?"
Who cares if the download doesn’t cost anything if you can’t use the app without in-app purchases?

“Patch Editing” is the in-app purchase, making it seem like it can be demoed without editing patches. 

Maybe great, but misleading.
-- androidOneEleven, 2023-05-11

### ***** "Great Support from Developer"
They have video tutorials, a Discord, and a website. The app is complex but there’s enough first class support to get started. They will help you with projects you want to do.
-- polarpaul, 2023-04-07

### ***-- "Why no CC in module?"
Audulus was great in responding when I couldn’t figure out how to get midi out. Now I am trying to make synths for my windsynth controller and discovered that there is a CC out module (node) but no CC in. I need to assign CC #2 breath to filters and envelopes. The synth modules sound great and with CC in they would be extremely good.
-- petemuzak, 2023-03-07

### ***** "It’s the synth app I’ve been pining for"
I’ve been using Audulus for just a week and WOW. This really is what I’ve been wanting but didn’t know existed. 

I picked up the Moog Model 15 app years ago and loved learning how to patch the components in nonstandard ways.  But I wanted more…more LFO’s…Step sequencers to control LFO rates to control waveforms, etc. I haven’t yet found the limitations with Audulus. At first I thought I’d mostly be playing around conceptually, but I’ve already incorporated some Toto synth sounds to record in Cubasis using aux3. 

It did take me a few hours to really get going in making my own creations. But there are ample video tutorials and active Discord conversations. Thanks everyone who posted patches!

It’s not for everyone. But if the notion of designing your own synths seems appealing, give it a try.
-- Djxerx, 2023-02-08

### ***** "Even better than v3"
Audulus  4 is fantastic for creating custom effects and synths.
-- hacked_to_pieces, 2023-01-28

### ***** "Audulus 4 is fantastic!"
Audulus 4 is the stuff of dreams if, like me, you like to tinker and customize and are in love with sound. I&#039;ve been able to design synths and effects to suit my interests. It has been great both for creating sounds I never thought I&#039;d be able to make -- but also for understanding how sound &quot;works&quot;.
-- AudioFanX, 2023-01-24

### ***** "intriguing, still studying before making my first experiment"
5 Stars now!  Very wild and deep experience! I just added a couple of new nodes to one of the templates to add an LFO change to one of the controls.  Wow.  So nodes can nest within modules that can nest within other modules.  This is going to be a lot of fun.  No crashes, and live patching without pops and glitches on a 2018 macbook. Good job!

Earlier: Upgraded my rating to 4 after trying out each of the supplied music templates on iOS....  intriguing, am now reading the documentation about the nodes...  And preparing for Mac OSX upgrade....  Update: The upgrade to OSX 13.1 went ok. 

 Original title: Forced upgrades to OSX and iOS. Very inconvenient  This software looks really great. It forced me to do an upgrade of the iOS on my iPad, ok, no big deal, did that, now I have a bunch of new stuff to get used, hope I chose an iOS that isnt horribly buggy....   But forcing me to upgrade my Mac OX from 12.3.1, where everything is working just fine, and I know I have other software that is not compatible of an OSX upgrade, this is really no bueno of Audulus.  Really not looking forward to losing other software, and all the other instability that I will likely find in the ecosystem of apps I use on my Mac, whose usage is much more series, and less tolerant of breaking things.   Please in the future dont force your users to be on the bleeding edge of OS upgrades. Your software looks really great, but it is hard to imagine you could not have made your app continue to work on a prior OS like most other major software continues to do......   This whole issue of software forced OS upgrades, and the ripple instabilities and problems, is exacly why some people are devoted to hardware based music production, such as on Akai MPC&#039;s and such. A studio can stay working for years and years, with all the workflow the artists have learned, and none of the periodic &quot;sorry the studio is down, we did an OS upgrade and now we cant read the NTFS backup volumes until we find a new software driver.&quot; ......  I will update my review after I go through this painful upgrade, it looks like you do enough cool stuff compared to my other variety of modular synth softwares, to make the pain worth it.
-- TheGarnetAtGmail, 2023-01-15

[View all Audulus 4 reviews and detailed analytics on AppTail](https://apptail.io/account/signup?utm_campaign=ai-crawl&amp;utm_content=reviews)

## Audulus 4 In-App Purchases
| Item | Price |
|------|-------|
| Audulus Pro (1 Year) | $29.99 |
| Audulus Pro (1 Month) | $4.99 |



## Apps Similar to Audulus 4
- [KORG Gadget 3](https://apptail.io/app/korg-gadget-3-Eue/united-states)
- [Drambo](https://apptail.io/app/drambo-Ghsb/united-states)
- [AUM - Audio Mixer](https://apptail.io/app/aum-audio-mixer-Bxsb/united-states)
- [miRack](https://apptail.io/app/mirack-Dxsb/united-states)
- [Fluss - Granular Playground](https://apptail.io/app/fluss-granular-playground-owwc/united-states)
- [DrumComputer - Synthetic Beats](https://apptail.io/app/drumcomputer-synthetic-beats-wddl/united-states)
- [Samplr](https://apptail.io/app/samplr-zddl/united-states)
- [Factory - Modular Synthesizer](https://apptail.io/app/factory-modular-synthesizer-Bddl/united-states)
- [SynthMaster 2](https://apptail.io/app/synthmaster-2-xedl/united-states)
- [Hilda Synthesizer](https://apptail.io/app/hilda-synthesizer-KLnm/united-states)

## Audulus 4 Available In
- [United States](https://apptail.io/app/audulus-4-dXck/united-states)
- [United Kingdom](https://apptail.io/app/audulus-4-dXck/united-kingdom)
- [Germany](https://apptail.io/app/audulus-4-dXck/germany)
- [Australia](https://apptail.io/app/audulus-4-dXck/australia)
- [Canada](https://apptail.io/app/audulus-4-dXck/canada)
- [Japan](https://apptail.io/app/audulus-4-dXck/japan)
- [China](https://apptail.io/app/audulus-4-dXck/china)
- [France](https://apptail.io/app/audulus-4-dXck/france)
- [Denmark](https://apptail.io/app/audulus-4-dXck/denmark)
- [Italy](https://apptail.io/app/audulus-4-dXck/italy)
- [Ukraine](https://apptail.io/app/audulus-4-dXck/ukraine)
- [India](https://apptail.io/app/audulus-4-dXck/india)
- [Spain](https://apptail.io/app/audulus-4-dXck/spain)
- [Greece](https://apptail.io/app/audulus-4-dXck/greece)
- [Norway](https://apptail.io/app/audulus-4-dXck/norway)
- [Switzerland](https://apptail.io/app/audulus-4-dXck/switzerland)
- [Portugal](https://apptail.io/app/audulus-4-dXck/portugal)
- [Russia](https://apptail.io/app/audulus-4-dXck/russia)
- [Singapore](https://apptail.io/app/audulus-4-dXck/singapore)
- [Lebanon](https://apptail.io/app/audulus-4-dXck/lebanon)
- [Mexico](https://apptail.io/app/audulus-4-dXck/mexico)
- [Netherlands](https://apptail.io/app/audulus-4-dXck/netherlands)
- [Peru](https://apptail.io/app/audulus-4-dXck/peru)
- [Pakistan](https://apptail.io/app/audulus-4-dXck/pakistan)
- [Poland](https://apptail.io/app/audulus-4-dXck/poland)
- [Romania](https://apptail.io/app/audulus-4-dXck/romania)
- [Sweden](https://apptail.io/app/audulus-4-dXck/sweden)
- [Türkiye](https://apptail.io/app/audulus-4-dXck/turkey)
- [Taiwan](https://apptail.io/app/audulus-4-dXck/taiwan)
- [Uzbekistan](https://apptail.io/app/audulus-4-dXck/uzbekistan)
- [Vietnam](https://apptail.io/app/audulus-4-dXck/vietnam)
- [Armenia](https://apptail.io/app/audulus-4-dXck/armenia)
- [South Africa](https://apptail.io/app/audulus-4-dXck/south-africa)
- [Argentina](https://apptail.io/app/audulus-4-dXck/argentina)
- [Azerbaijan](https://apptail.io/app/audulus-4-dXck/azerbaijan)
- [Belgium](https://apptail.io/app/audulus-4-dXck/belgium)
- [Bulgaria](https://apptail.io/app/audulus-4-dXck/bulgaria)
- [Brunei](https://apptail.io/app/audulus-4-dXck/brunei)
- [Chile](https://apptail.io/app/audulus-4-dXck/chile)
- [Colombia](https://apptail.io/app/audulus-4-dXck/colombia)
- [Czechia](https://apptail.io/app/audulus-4-dXck/czechia)
- [Dominican Republic](https://apptail.io/app/audulus-4-dXck/dominican-republic)
- [Ecuador](https://apptail.io/app/audulus-4-dXck/ecuador)
- [Egypt](https://apptail.io/app/audulus-4-dXck/egypt)
- [Hong Kong SAR China](https://apptail.io/app/audulus-4-dXck/hong-kong)
- [Hungary](https://apptail.io/app/audulus-4-dXck/hungary)
- [Indonesia](https://apptail.io/app/audulus-4-dXck/indonesia)
- [Ireland](https://apptail.io/app/audulus-4-dXck/ireland)
- [Israel](https://apptail.io/app/audulus-4-dXck/israel)
- [South Korea](https://apptail.io/app/audulus-4-dXck/south-korea)
- [Kazakhstan](https://apptail.io/app/audulus-4-dXck/kazakhstan)

---

## About AppTail

[AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends.

- [Search Apps](https://apptail.io)
- [Top Charts](https://apptail.io/top-iphone-apps)
- [Sign Up for Full Access](https://apptail.io/account/signup?utm_campaign=ai-crawl&amp;utm_content=footer)

*Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*
