Comparison

Audulus 4 vs TriplexClassic

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

Head to head
About

Audulus 4

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.

Highlights
  • 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
Features
Read full 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: "gem for Apple platforms – gorgeous, fluid" — Peter Kirn, createdigitalmusic.com "stunning!" — Richard Devine, devinesound.net "Remarkable gesture control" — 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: https://audulus.com/terms.html

About

TriplexClassic

This application offers a classic FM synthesizer experience with a modern interface. It allows for a wide range of sounds, from clean to distorted, with six specialized macro controls for easy sound shaping. An LFO and drive control further enhance its sound design capabilities.

Highlights
  • 3 operator FM synth engine
  • Up to 8 voices
  • 6 specialized macro controls
  • LFO with shape control
  • Drive control
  • Modern, accessible interface
Read full description

Classic FM sounds with a modern twist! TriplexClassic takes inspiration from famous digital synthesizers of the 80s and puts them in an easy-to-use, accessible interface. The synth engine was developed from the ground up to facilitate sounds ranging from pristine modern FM sounds to crunchy bit-crushed mayhem - with everything in between. It is equipped with 6 highly specialized macro controls that makes it easy to set up without any tedious programming. Features: - 3 operator FM synth engine with up to 8 voices - Macro controls over FM amount, harmonicity, phase and bit resolution (labeled "redux"), attack, combined decay/release and sustain - LFO with shape control (sine, triangle, ramp up, ramp down, square, random) and user-definable destination - Drive control KNOWN ISSUES: As of right now the standalone app does not support incoming Midi. Please use TriplexClassic hosted as an AUv3 plugin.

Screenshots

Audulus 44 screens
TriplexClassic2 screens

Verdict

The call

The clearest difference is rating: TriplexClassic at 5.0 against Audulus 4's 4.3. TriplexClassic also leads on in-app purchases (none vs 27) and review sentiment (100% vs 69%). Audulus 4's advantage is ratings volume (74 vs 15). On price, 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

Both are free to download. Audulus 4 sells 27 in-app purchases, starting at $4.99 per month. TriplexClassic asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

TriplexClassic holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 74 and 15 respectively. Written reviews point the same way: 69% of Audulus 4's written reviews are positive against 100% of TriplexClassic's.

UpkeepUpdate frequency

Audulus 4 ships an update monthly, TriplexClassic every 5 days. The most recent releases landed on September 12, 2026 and August 19, 2026 respectively.

Scorecard7 real differences · 3 level
Audulus 4 versus TriplexClassic: the parameters behind the verdict, then further details
ParameterAudulus 4TriplexClassic
PriceFreeFree
Rating4.3 (74 ratings)5.0 (15 ratings) — better
Positive reviews69.2% of reviews100.0% of reviews — better
Number of ratings74 — better15
Update frequencyMonthlyEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS18.014 — better
Further details — not scored
Size103 MB2 MB
Age rating4+4+
DeveloperAudulus LLCChristopher Herb

Customer experience

Audulus 4

All ratings74 ratings
Positive82.4%
Neutral4.1%
Negative13.5%
Written reviews78 reviews
Positive69.2%
Neutral10.3%
Negative20.5%

TriplexClassic

All ratings12 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Audulus 4

Reported bugs

13 issues
  • iOS 18 compatibility issues (app not working)
  • Save presets but no 'Load' button
  • Undo command issues with DAWs
  • CMD+Z causing data loss
  • Opt+drag not duplicating modules
Show 8 more
  • Plugin window not resizable
  • Menu filtering not functioning properly on iPhone
  • Select and Import buttons not working
  • Blank screen on open
  • App freezes on iPad Pro
  • Black screen on launch after update
  • No modules appearing after iOS 18 update
  • Patches not appearing after iOS 18 update

Requested features

7 requests
  • Add 'Load' button for presets
  • Improve DAW integration (Undo, duplicate)
  • Resizable plugin window
  • More modules (FFT/IFFT, granular buffering)
  • Add CC in module
Show 2 more
  • Sync to host as AUv3
  • Make upgrade path clearer from Audulus 3

TriplexClassic

Not enough reviews yet to summarise bugs or requests.

In-app purchases

27 purchases

Audulus 4

Subscriptions2
  • Audulus Pro (1 Month)7 Days trial$4.991 Month
  • Audulus Pro (1 Year)7 Days trial$29.991 Year
One-time25
  • 1-shot Sample$1.99
  • P-Train$2.99
  • CLK RS-1$3.99
Show 22 more
  • CG-1 Chord Generator$3.99
  • CLK Clock Generator$4.99
  • MetaEnvelope$4.99
  • Modal Percussion$4.99
  • CLK: TimeWarp$4.99
  • CPR-1$4.99
  • LMT-1$4.99
  • MS-FUNC$5.99
  • CLK SS-516$7.99
  • J-23 Reverb$7.99
  • J-23 Effects$7.99
  • CLK GS-1$7.99
  • Chaos LFO Bundle$7.99
  • ARP-1$7.99
  • CPR-3$7.99
  • SynD-K1$7.99
  • TRIKOR VCO$9.99
  • CLK Tools Bundle$9.99
  • Essential Synth Bundle$9.99
  • VCF Bundle 1$9.99
  • J-23 Space Console$14.99
  • Patch Editing$29.99
None

TriplexClassic

No in-app purchases

Questions

Is Audulus 4 free?
Audulus 4 is free to download, with in-app purchases available.
Is TriplexClassic free?
TriplexClassic is free to download, with no in-app purchases.
Which has better reviews, Audulus 4 or TriplexClassic?
TriplexClassic is rated higher. Audulus 4 averages 4.3 out of 5 from 74 ratings, while TriplexClassic averages 5.0 from 15 ratings.
Do Audulus 4 or TriplexClassic have ads?
Neither Audulus 4 nor TriplexClassic shows ads.
Which is updated more often, Audulus 4 or TriplexClassic?
Audulus 4 ships an update monthly, and TriplexClassic every 5 days. Most recently, Audulus 4 was updated on September 12, 2026 and TriplexClassic on August 19, 2026.

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