Audulus 4
A Universe of Sound
How much does Audulus 4 cost?
Prices are current as of 6 Oct 2026.
10 one-time purchases from $1.99
In the United States, Audulus 4 has 10 one-time purchases priced $1.99 – 9.99.
| Product | Price |
|---|---|
| 1-shot Sample | $1.99 |
| CG-1 Chord Generator | $3.99 |
| LMT-1 | $4.99 |
| Modal Percussion | $4.99 |
| ARP-1 | $7.99 |
| Chaos LFO Bundle | $7.99 |
| SynD-K1 | $7.99 |
| CLK Tools Bundle | $9.99 |
| Essential Synth Bundle | $9.99 |
| VCF Bundle 1 | $9.99 |
10+ alternatives to Audulus 4
| Audulus 4 |   NERD Synth A2x + AUv3 |   miRack |  DrumComputer - Synthetic Beats |   AUM - Audio Mixer |  SynthMaster 2 |  Factory - Modular Synthesizer |  Aparillo |   Drambo |  Mariana Bass Synthesizer |  Cyclop for iPad | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Rating / 5 | 4.3 | 4.9 | 4.8 | 4.8 | 4.7 | 4.8 | 4.8 | 4.8 | 4.8 | 4.6 | 4.6 |
| Reviews | 167 | 3.1K | 2.2K | 1.6K | 1.6K | 1.5K | 1.4K | 1.4K | 996 | 232 | 199 |
| Released | 2022 | 2024 | 2019 | 2020 | 2016 | 2021 | 2019 | 2018 | 2020 | 2023 | 2015 |
| One-time price | $7.99 | — | $4.99 | $29.99 | $1.99 | $4.99 | $24.99 | $24.99 | — | — | $24.99 |
The going rate for each plan in United States, in its own currency, shaded from the cheapest price on the row to the dearest.
Audulus 4 reviews
4.3 out of 5, based on 167 reviews.
What people like
- Deep sound design capabilities for experts
- Developer is responsive and dedicated
- Great if you know modular synth
What they complain about
- Requires subscription to use core features
- Crashes or freezes on older devices
- Modules are expensive and sold separately
- Documentation is missing and confusing
Audulus 4 is definitely a masterpiece but…
That being said, I must somewhat agree with other reviewers in the sense that: I actually paid for this app when it launched, and also paid for its predecessor Audulus 3. Whilst I understand that modules being sold as IAP is honestly probably the way to go for a modular synth (can’t ask for everything without paying 🤷🏻♂️), I find it a bit annoying that some of us paid to essentially fund the development of what has now become a free app. I understand that every module that was on the released - paid for - version is still available to me, but I do feel like at least, as a funding member, we should have gotten some treats when it comes to the IAPs.. perhaps a “redeemable code” or two (or even three really) to make up for the investment would have gone a long way. Still going to give this a 5, but I honestly am quite annoyed by the whole IAP system not rewarding funding members. Cheers though, I have to dig in deeper into this app now — but I spent a lot of time on Audulus 3 and never used 4 even though I purchased it because it wasn’t available on iPhone when I purchased it (not really that much of an iPad music maker but more of an iPhone music maker kinda guy).
SECURITY RISK
I really wanted to try this app, it reminds me of some old Propellerheads software I had years ago called Reason. Unfortunately the camera comes on when the app is on. You can’t turn it off in permissions. You can turn off the microphone in permissions, but not the camera. I tried deleting it an reinstalling it to wipe the memory, no good, camera light still comes on.
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
Why Would I Pay for MIDI I/O?
It’s difficult to imagine why the developer thinks MIDI functionality should be behind a paywall. Have you looked at any other iOS music apps lately? Ever? Also, the persistent banner in the upper right corner urging users to upgrade to Pro is annoying. Make this smaller, minimizable, or make it disappear after the app is open for a few minutes. In-product help is totally absent, except for a fairly uninstructive tutorial. Figure out some kind of documentation- a tooltip or two would go a long ways. What happened to the long-hold menu with options like ‘Help’? Hard to see that this is much of an improvement for the typical user, beyond the slightly nicer looking UI.
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.
Taylor really deserves a Turing Award for this.
I'm not sure if anyone understands it, but Taylor Holliday has single handedly created one of the most advanced GUI kits in the whole world capable of running a very very very complicated data-flow language that itself runs hundreds and thousands of nodes so many times a second, it actually outputs sound. What he has done is one of the greatest achievements in the whole of computing, whether anyone sees it or not. You read his codes like the RUI and you see just how he deserves to be there. A genius project, way a way more genius implementation.
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.
バグ報告
モジュールを追加→Allを押すと開かれるUIがしばらく開いた後すぐ閉じてしまいます。
Beep boop 🤖 …
Bleep bop boop 🤖 … Response to dev: Nope, 2 stars was correct. It’s not really my cup of tea. & not worth the forced iOS update…(afaik, no other app is forcing this atm so idk what makes you think you’re so special…)
Infos on the App page are wrong.
The App page says that the Base version contains the stand-alone or audio plugin (AUv3). However, what it doesn't say is that you need to be subscribed to open the AUv3, which is misinformation about what you pay for.
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...
Subscription dead
My yearly subscription is no longer valid because the dev is money hungry and killed it. Screwed out of money, will delete. Hate this business practice another gem ruined by greed!
COOL!!!!
I forgot I ever installed this, then opened it in Ableton by accident. Then I got lost in it for hours. If you’re a music producer just starting to dip your toes into DSP, this is a must-try. This is honestly the perfect middle-ground between Formula, PlugData and Bitwig Grid; all available within a VST - and this one is much more math-centric, which feels much more intuitive for someone like me. HOWEVER - I wouldn’t be ready to spend money on it just yet as it has a few glaring issues: #1, you can save your presets, but there’s no ‘Load’ button. This may be accessed by the “Open user presets folder”, but for me this button does nothing. #2, basic DAW-compatible functions are absent. This is a HUGE pain, because if you accidentally press CMD+Z by muscle memory, and your last action in your DAW was to move or insert Audulus, your DAW receives the Undo command instead of the plugin and you lose ALL your work, even if you hit Redo. Complete reset. Opt+drag on modules does not duplicate. Plugin window is not resizable. Things like that. #3, the UI and customization leave a lot to be desired. Specifically the outer-edge section where things like Save, Load, Prefs, etc. are supposed to live - I forget what this is called but in Audulus this part is almost completely barren. Makes the whole thing feel like a beta version. If I felt negatively or indifferent about Audulus, I wouldn’t be writing all this. I would really love to see a more complete version of this plugin with the features I mentioned plus an addition of more modules such as FFT/IFFT conversion, granular buffering, and other things that are native to comparable apps. Looking forward to seeing this one evolve - I’ll be ready to give that 5-star review and tell all my music nerd friends about it.
No upgrade path from audulus3
Not sure what the new additions are but thinking I’ll wait for the next version
Add a Synch to host as AUv3
Add a Synch to host as AUv3
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+
Ridiculous UI
I couldn’t get to the second screen of the “Start Here” patch. Literally could not navigate to it. Buttons exist, why be cute with uncertain panning on the first user experience?
Cool design, menu filtering doesn’t function properly
I really like the design but unfortunately the menus system is buggy on an iPhone 17 pro. In order to navigate to the free modules you have to scroll down past the pro ones, but the the tag system/ filtering window automatically closes after selection. There is an extensive amount of modules, but without that filtering being available it’s not very practical. Would be even interested in purchases pro modules if that issue was fixed.
Absolute CPU eater!
Tried demo on Gen 1 iPad Pro, most of the demo patches stutter like crazy with 80% or higher cpu usage. You will need an m1/2 to run this unfortunately. So a current Gen iPad Pro. Unfortunate.
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.
Cool as heck
A lot went into this and it shows. Amazing modular environment and I can’t wait to see what my imagination builds.
5 for app, 1 for monetization model
Subscription model is for services. Not for featers that runs on user device. So, 1 star.
Blank Screen On Open
This was unfair. I was simply frustrated after dropping 20 bucks, expecting to play with something cool. I'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's it. My ipad is up to date. What gives? Really hoping the developers are responsive. I'll update my review if they fix this right away.
Better than MAX and developer could easily charge more
This app is a gift from the gods. Don’t listen to the ungrateful plebs.
Simply does not explain how it’s supposed to work
Avoid. Mi rack does everything that this does better, number one mi rack works. This doesn’t. Do not even consider Audulus. It’s a waste. Has had months to pick up and improve. Hasn’t happened. It makes no sense. Envelopes don’t seem to work at all. There is no obvious logic to how to get things started. Why is this app still around? It’s as unusable as ever.
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.
Addictive
If you like making or manipulating music and you like building stuff, this is for you. I’ve been building stuff in Audulus for a lot of years and there’s more to learn from it.
Keeps freezing
On iPad Pro. Latest OS 16.5.1(c). As soon as I add a node or module, it freezes. Can’t even zoom in or out. The cpu usage is at something low, like 9%, so that’s not the problem. I wish I could get my 40$ back as it is completely unusable.
Patches, where are all the user patches?
I have changed my rating. Support was very helpful. It would be five stars if not for the lack of documentation. I realize this is a lot to ask of a developer but an app like this needs more comprehensive documentation. It is obviously a catch-22. I want to love this app. It’s so pretty and sounds nice. My problem is there appears to be no way to bring user patches into the AUv3 version. I don’t see a link or button. The app opens the factory patches, but not the examples I downloaded from the forum and patchstorage. Maybe I am missing something. It should be obvious in the UI, but it is not. It’s said both iPad and Mac version are available for single purchase (if I understand this right). The desktop version never connects to restore purchases. Very frustrating. Help! I want to keep this app. If I can’t bring my patches into AUv3 in AUM, there is no reason to keep it. Not interested in the limited number of factory presets. I don’t want ask for a refund. But almost $20 bucks is nothing to scoff at. Please don’t make me ask for a refund.
REALLY COOL SYNTH
There just one thing could you make it so the when you scroll while holding a wire on mobile your screen follows cause it’s annoy to have to widen the screen to connect points(:
Latest bug fix release
Downloaded the Jun 16 update to Audulus, this morning. After months of trouble-free booting and use, the app now no longer works on my 2018 iPad Pro running under the latest iPad OS. The app opens to a black screen. This is key app, for me, and I should like it returned to use, ASAP. If this is not possible, at least offer the previously functioning iteration. I do love this app, and hope this is a temporary blip. Thank you for your attention.
Impressed Enough to Subscribe
I have a serious aversion to subscriptions on iOS/iPadOS due to Apple’s App Store policies. I am making a rare exception for Audulus 4. The amount of work and love Taylor has sowed in is extraordinary. So intuitive and easy to use, seriously thank you Taylor. Being left handed I find the interface to be acceptable except when switching from Performance Mode to Edit and back. A dedicated button in the top right interface panel instead of the slide out would be quite helpful. Try navigating with your left hand and you’ll notice your hand blocks the view. Thanks again, I have purchased each iteration, 1,2,3 and now 4. ❤️
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.
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.
Audulus 4 is not free
Actually i’m update to IOS16 specially for that app, which seems to be free, but not, it’s cost $18 to open it, many people did the same mistake and feel very confused now, that’s why only one star
Audulus 4 price by country
A one-time purchase costs $4.68 in Pakistan and $10.83 in the United Kingdom — 2× more for the same thing. Below is the going rate for each plan in every country that sells it — the middle price of what the app charges there, in the country's own currency with the dollar equivalent beneath it.
| Country | One-time |
|---|---|
| Afghanistan | $4.99 |
| Albania | $5.99 |
| Algeria | $4.99 |
| Angola | $4.99 |
| Anguilla | $4.99 |
| Antigua And Barbuda | $4.99 |
| Argentina | $4.99 |
| Armenia | $5.99 |
| Australia | A$7.99$5.75 |
| Austria | €5.99$6.97 |
| Azerbaijan | $5.99 |
| Bahamas | $4.99 |
| Bahrain | $4.99 |
| Barbados | $5.99 |
| Belarus | $5.99 |
| Belgium | €5.99$6.97 |
| Belize | $4.99 |
| Benin | $5.99 |
| Bermuda | $4.99 |
| Bhutan | $4.99 |
| Bolivia | $4.99 |
| Bosnia & Herzegovina | €5.99$6.97 |
| Botswana | $4.99 |
| Brazil | R$29.90$5.86 |
| British Virgin Islands | $4.99 |
| Brunei Darussalam | $4.99 |
| Bulgaria | €5.99$6.97 |
| Burkina Faso | $4.99 |
| Cambodia | $4.99 |
| Cameroon | $5.99 |
| Canada | CA$9.99$7.24 |
| Cape Verde | $4.99 |
| Cayman Islands | $4.99 |
| Chad | $4.99 |
| Chile | CLP 5,990$6.41 |
| China | CN¥38.00$5.66 |
| Colombia | COP 24,900$7.96 |
| Congo | $4.99 |
| Congo, Democratic Republic | $4.99 |
| Costa Rica | $4.99 |
| Cote Divoire | $5.99 |
| Croatia | €5.99$6.97 |
| Cyprus | €5.99$6.97 |
| Czech Republic | CZK 129.00$6.20 |
| Denmark | DKK 39.00$6.07 |
| Dominica | $4.99 |
| Dominican Republic | $4.99 |
| Ecuador | $4.99 |
| Egypt | EGP 249.99$4.90 |
| El Salvador | $4.99 |
| Estonia | €5.99$6.97 |
| Fiji | $4.99 |
| Finland | €5.99$6.97 |
| France | €5.99$6.97 |
| Gabon | $4.99 |
| Gambia | $4.99 |
| Georgia | $5.99 |
| Germany | €5.99$6.97 |
| Ghana | $5.99 |
| Greece | €5.99$6.97 |
| Grenada | $4.99 |
| Guatemala | $4.99 |
| Guinea-bissau | $4.99 |
| Guyana | $4.99 |
| Honduras | $4.99 |
| Hong Kong | HK$38.00$4.85 |
| Hungary | HUF 1,990$6.36 |
| Iceland | $5.99 |
| India | ₹499.00$5.26 |
| Indonesia | IDR 89,000$5.05 |
| Iraq | $4.99 |
| Ireland | €5.99$6.97 |
| Israel | ₪17.90$5.93 |
| Italy | €5.99$6.74 |
| Jamaica | $4.99 |
| Japan | ¥800$5.20 |
| Jordan | $4.99 |
| Kazakhstan | KZT 2,990.00$6.58 |
| Kenya | $5.99 |
| Kosovo | €5.99$6.97 |
| Kuwait | $4.99 |
| Kyrgyzstan | $4.99 |
| Lao Peoples Democratic Republic | $4.99 |
| Latvia | €5.99$6.97 |
| Lebanon | $4.99 |
| Liberia | $4.99 |
| Libya | $4.99 |
| Lithuania | €5.99$6.97 |
| Luxembourg | €5.99$6.97 |
| Macao | $4.99 |
| Macedonia | $4.99 |
| Madagascar | $4.99 |
| Malawi | $4.99 |
| Malaysia | MYR 22.90$5.64 |
| Maldives | $4.99 |
| Mali | $4.99 |
| Malta | €5.99$6.97 |
| Mauritania | $4.99 |
| Mauritius | $5.99 |
| Mexico | MX$99.00$5.85 |
| Micronesia | $4.99 |
| Moldova | $5.99 |
| Mongolia | $4.99 |
| Montenegro | €4.99$5.80 |
| Montserrat | $4.99 |
| Morocco | $4.99 |
| Mozambique | $4.99 |
| Myanmar | $4.99 |
| Namibia | $4.99 |
| Nauru | $4.99 |
| Nepal | $5.99 |
| Netherlands | €5.99$6.97 |
| New Zealand | NZ$9.99$5.84 |
| Nicaragua | $4.99 |
| Niger | $4.99 |
| Nigeria | NGN 7,900.00$5.98 |
| Norway | NOK 59.00$6.39 |
| Oman | $4.99 |
| Pakistan | PKR 1,300$4.68 |
| Palau | $4.99 |
| Panama | $4.99 |
| Papua New Guinea | $4.99 |
| Paraguay | $4.99 |
| Peru | PEN 22.90$6.84 |
| Philippines | ₱299.00$4.78 |
| Poland | PLN 24.99$6.74 |
| Portugal | €5.99$6.97 |
| Qatar | QAR 19.99$5.49 |
| Romania | RON 29.99$6.63 |
| Russia | RUB 449.00$5.20 |
| Rwanda | $4.99 |
| Sao Tome & Principe | $4.99 |
| Saudi Arabia | SAR 19.99$5.33 |
| Senegal | $5.99 |
| Serbia | €5.99$6.97 |
| Seychelles | $4.99 |
| Sierra Leone | $4.99 |
| Singapore | SGD 6.98$5.54 |
| Slovakia | €5.99$6.97 |
| Slovenia | €5.99$6.97 |
| Solomon Islands | $4.99 |
| South Africa | ZAR 99.99$6.25 |
| South Korea | ₩7,700$5.74 |
| Spain | €5.99$6.97 |
| Sri Lanka | $4.99 |
| St. Kitts and Nevis | $4.99 |
| St. Lucia | $4.99 |
| St. Vincent & The Grenadines | $4.99 |
| Suriname | $4.99 |
| Swaziland | $4.99 |
| Sweden | SEK 69.00$7.19 |
| Switzerland | CHF 4.00$4.94 |
| Taiwan | NT$150.00$4.76 |
| Tajikistan | $4.99 |
| Tanzania | TZS 14,900.00$5.63 |
| Thailand | THB 199.00$6.05 |
| Tonga | $4.99 |
| Trinidad and Tobago | $4.99 |
| Tunisia | $4.99 |
| Turkey | TRY 249.99$5.16 |
| Turkmenistan | $4.99 |
| Turks and Caicos | $4.99 |
| Uganda | $5.99 |
| Ukraine | $5.99 |
| United Arab Emirates | AED 19.99$5.45 |
| United Kingdom | £7.99$10.83 |
| United States | $7.99 |
| Uruguay | $4.99 |
| Uzbekistan | $4.99 |
| Vanuatu | $4.99 |
| Venezuela | $4.99 |
| Vietnam | ₫149,000$5.75 |
| Yemen | $4.99 |
| Zambia | $5.99 |
| Zimbabwe | $5.99 |
Audulus 4 FAQ
- Is Audulus 4 free?
- Yes. The app and its basic features are free, in all 175 countries it sells in. Premium features are paid: they start from $1.99 (US), across 10 one-time purchases.
- Does Audulus 4 have a free trial?
- No. None of its offers (US) come with a free trial.
- Where is Audulus 4 cheapest?
- A one-time purchase costs PKR 1,300 (≈$4.68) in Pakistan and £7.99 (≈$10.83) in the United Kingdom, its cheapest and dearest countries.
- What are the best alternatives to Audulus 4?
- NERD Synth A2x + AUv3 (4.9 from 3,055 reviews), miRack (4.8 from 2,150 reviews, premium from $0.99) and DrumComputer - Synthetic Beats (4.8 from 1,634 reviews, premium from $29.99).
Audulus 4 download
Last updated 9 months ago.
Audulus 4 sells in 175 countries. It was released 3 years and 9 months ago, on 12 Dec 2022. It holds a 4.3 rating from 167 reviews.
Supports 1 language: English.
How much does Audulus 4 make?
Third-party estimates for the last 30 days, worldwide — not the store's own figures, which Apple publishes for nobody.
Revenue by plan
- One-time 100%
Revenue by country
- United States 53%
- Germany 12%
- United Kingdom 10%
- Australia 3%