# Cycle vs Audulus 4

The clearest difference is in-app purchases: Cycle at none against Audulus 4's 27. Cycle also leads on update cadence (weekly vs monthly) and rating (4.5 vs 4.3). On price, review sentiment, ads and device support there is nothing between them.

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

Cycle holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: Cycle has 508 ratings behind it against 73, so its average is the more settled of the two. Written reviews point the same way: 73% of Cycle's written reviews are positive against 69% of Audulus 4's.

Cycle ships an update weekly, Audulus 4 monthly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Cycle | Audulus 4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (508 ratings)](https://appshunter.io/ios/app/cycle-time-lag-accumulator/id1403146926/reviews)** | [4.3 (73 ratings)](https://appshunter.io/ios/app/audulus-4/id1592022030/reviews) |
| Number of ratings | **508** | 73 |
| Positive reviews | **73.5% of reviews** | 69.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 31 MB | 103 MB |
| Requires iOS | **9.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Coda Labs Incorporated](https://appshunter.io/developer/1139019669) | [Audulus LLC](https://appshunter.io/developer/452619536) |

## What reviewers say

### Cycle

[App page](https://appshunter.io/ios/app/cycle-time-lag-accumulator/id1403146926)

This app creates evolving musical textures by repeating notes that gradually fade. It offers a meditative experience and is ideal for ambient music creation. Users can record and export their creations in various formats.

**Highlights:** Time lag accumulation for sonic textures, Meditative and ambient music creation, Record and export to WAV/MIDI, Inter-App Audio and Audiobus support, 12 sound options, Controllable tempo and reverb

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🎵 Unique generative looping concept with interesting fade effects
- 👍 Intuitive and simple user interface
- 💰 Free to use with no cost barrier
- 📤 Export functionality (WAV and MIDI files)
- 🎹 Keyboard layout for musical input

**What reviewers complain about**

- ⚙️ Lack of precise tempo/BPM control
- 🎛️ Limited control over sound parameters
- 🔊 Default sound samples can be grating
- 📱 UI layout issues on some screen sizes
- 🎹 Basic keyboard implementation

**Reported bugs**

- No sound output on some devices
- WAV export generates zero data files
- UI extends beyond screen boundaries
- Audio playback issues requiring hard reload

**Requested features**

- Ableton Link synchronization support
- Precise BPM display and control
- VST plugin version for DAW integration
- AU (Audio Unit) support for iOS apps
- MIDI input for keyboard triggering


### Audulus 4

[App page](https://appshunter.io/ios/app/audulus-4/id1592022030)

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:** Vision Pro support

**In-app purchases (27)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Audulus Pro (1 Month) | $4.99 | per month |
| Audulus Pro (1 Year) | $29.99 | per year |
| 1-shot Sample | $1.99 | one-time |
| P-Train | $2.99 | one-time |
| CLK RS-1 | $3.99 | one-time |
| CG-1 Chord Generator | $3.99 | one-time |
| CLK Clock Generator | $4.99 | one-time |
| MetaEnvelope | $4.99 | one-time |
| Modal Percussion | $4.99 | one-time |
| CLK: TimeWarp | $4.99 | one-time |
| CPR-1 | $4.99 | one-time |
| LMT-1 | $4.99 | one-time |
| MS-FUNC | $5.99 | one-time |
| CLK SS-516 | $7.99 | one-time |
| J-23 Reverb | $7.99 | one-time |
| J-23 Effects | $7.99 | one-time |
| CLK GS-1 | $7.99 | one-time |
| Chaos LFO Bundle | $7.99 | one-time |
| ARP-1 | $7.99 | one-time |
| CPR-3 | $7.99 | one-time |
| SynD-K1 | $7.99 | one-time |
| TRIKOR VCO | $9.99 | one-time |
| CLK Tools Bundle | $9.99 | one-time |
| Essential Synth Bundle | $9.99 | one-time |
| VCF Bundle 1 | $9.99 | one-time |
| J-23 Space Console | $14.99 | one-time |
| Patch Editing | $29.99 | one-time |

**What reviewers like**

- ✨ Powerful modular environment
- 💡 Deep DSP programming capabilities
- 🎨 Intuitive and beautiful UI
- 🚀 Seamless workflow across devices
- 📚 Great for learning synthesis

**What reviewers complain about**

- 💸 Expensive in-app purchases/subscriptions
- ⚠️ Steep learning curve for beginners
- 📱 UI issues on mobile (scrolling, view obstruction)
- 📉 High CPU usage
- ❓ Lack of comprehensive documentation

**Reported bugs**

- 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

**Requested features**

- Add 'Load' button for presets
- Improve DAW integration (Undo, duplicate)
- Resizable plugin window
- More modules (FFT/IFFT, granular buffering)
- Add CC in module


## Frequently asked questions

### Is Cycle free?

Cycle is free to download, with no in-app purchases.

### Is Audulus 4 free?

Audulus 4 is free to download, with in-app purchases available.

### Which has better reviews, Cycle or Audulus 4?

Cycle is rated higher. Cycle averages 4.5 out of 5 from 508 ratings, while Audulus 4 averages 4.3 from 73 ratings.

### Do Cycle or Audulus 4 have ads?

Neither Cycle nor Audulus 4 shows ads.

### Which is updated more often, Cycle or Audulus 4?

Cycle ships an update weekly, and Audulus 4 monthly. Most recently, Cycle was updated on October 24, 2026 and Audulus 4 on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*