Audulus 4 vs TriplexClassic
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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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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
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.
- 3 operator FM synth engine
- Up to 8 voices
- 6 specialized macro controls
- LFO with shape control
- Drive control
- Modern, accessible interface
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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
Verdict
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
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.
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.
Audulus 4 ships an update monthly, TriplexClassic every 5 days. The most recent releases landed on September 12, 2026 and August 19, 2026 respectively.
| Parameter | Audulus 4 | TriplexClassic |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (74 ratings) | 5.0 (15 ratings) — better |
| Positive reviews | 69.2% of reviews | 100.0% of reviews — better |
| Number of ratings | 74 — better | 15 |
| Update frequency | Monthly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 18.0 | 14 — better |
| Further details — not scored | ||
| Size | 103 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Audulus LLC | Christopher Herb |
Customer experience
Audulus 4
TriplexClassic
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
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- 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
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- 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
Audulus 4
- Audulus Pro (1 Month)7 Days trial$4.991 Month
- Audulus Pro (1 Year)7 Days trial$29.991 Year
- 1-shot Sample$1.99
- P-Train$2.99
- CLK RS-1$3.99
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- 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
TriplexClassic
No in-app purchases









