# Orphion vs Audulus 4

The clearest difference is price: Audulus 4 at Free against Orphion's $3.99. Audulus 4 also leads on rating (4.3 vs 4.0) and update cadence (monthly vs every 2 months). Orphion's advantage is review sentiment (85% vs 69%) and iOS requirement (7.0 vs 18.0). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Audulus 4 is free to download; Orphion costs $3.99 up front. Orphion sells 1 one-off in-app purchase and Audulus 4 sells 27 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Audulus 4 holds the better App Store score, 4.3 against 4.0. Both are backed by a comparable volume of ratings — 31 and 74 respectively. Written reviews complicate that: 85% of Orphion's written reviews are positive against 69% of Audulus 4's, so the app with the better star average is not the one people write more warmly about.

Orphion ships an update every 2 months, Audulus 4 monthly. The most recent releases landed on August 2, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Orphion | Audulus 4 |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [4.0 (31 ratings)](https://appshunter.io/ios/app/orphion/id495465097/reviews) | **[4.3 (74 ratings)](https://appshunter.io/ios/app/audulus-4/id1592022030/reviews)** |
| Number of ratings | 31 | **74** |
| Positive reviews | **84.7% of reviews** | 69.2% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 27 MB | 103 MB |
| Requires iOS | **7.0** | 18.0 |
| Devices | iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Bastus Trump](https://appshunter.io/developer/495465100) | [Audulus LLC](https://appshunter.io/developer/452619536) |

## What reviewers say

### Orphion

[App page](https://appshunter.io/ios/app/orphion/id495465097)

Create expressive music and melodies with a unique virtual instrument. Explore your creativity through intuitive finger movements on virtual pads, generating sounds between string and percussion. Ideal for both beginners and experienced musicians.

**Highlights:** Unique string and percussion sound, Expressive polyphonic music, Intuitive finger pad interaction, Customizable pad layouts, MIDI and Audiobus support, Multiple articulations

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Orphion Editor | $0.99 | one-time |

**What reviewers like**

- 🎵 Unique and expressive musical instrument design
- 👍 Intuitive touch interface for playing music
- 🎛️ Customizable pad layouts and configurations
- 🔌 Works well as MIDI controller for other apps
- 🎨 Beautiful, simple, and elegant user interface

**What reviewers complain about**

- 🐛 Audio crackling and distortion issues on recent iPadOS versions
- ❌ App crashes and fails to launch on newer devices
- 📱 UI rendering problems on iPad mini and newer iPad models
- 🔧 Abandoned by developer - no updates or support
- 🚫 Incompatible with latest iPadOS (18+)

**Reported bugs**

- Audio crackling and distortion on iPadOS 18 and M4 devices
- App crashes on startup with recent iPad OS versions
- UI elements out of place on iPad mini
- MIDI not working in AUM and other DAWs
- Virtual MIDI instruments not detected when loaded as IAA

**Requested features**

- Recording and export functionality
- Additional sound patches and voices
- Custom scale and layout editor
- Pitch bend and modulation wheel controls
- AudioCopy/Paste support


### 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 Orphion free?

Orphion costs $3.99, and also offers in-app purchases.

### Is Audulus 4 free?

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

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

Audulus 4 is rated higher. Orphion averages 4.0 out of 5 from 31 ratings, while Audulus 4 averages 4.3 from 74 ratings.

### Do Orphion or Audulus 4 have ads?

Neither Orphion nor Audulus 4 shows ads.

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

Orphion ships an update every 2 months, and Audulus 4 monthly. Most recently, Orphion was updated on August 2, 2026 and Audulus 4 on September 12, 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.*