# SynthMaster One for iPhone vs OCTANE Mobile

The clearest difference is review sentiment: SynthMaster One for iPhone at 66% against OCTANE Mobile's 20%. SynthMaster One for iPhone also leads on rating (4.8 vs 3.4) and ratings volume (331 vs 89). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. SynthMaster One for iPhone sells 10 one-off in-app purchases and OCTANE Mobile sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

SynthMaster One for iPhone holds the better App Store score, 4.8 against 3.4. Both are backed by a comparable volume of ratings — 331 and 89 respectively. Written reviews point the same way: 66% of SynthMaster One for iPhone's written reviews are positive against 20% of OCTANE Mobile's.

SynthMaster One for iPhone ships an update every 2 months, OCTANE Mobile monthly. The most recent releases landed on September 19, 2026 and August 15, 2026 respectively.

## The numbers

| Metric | SynthMaster One for iPhone | OCTANE Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (331 ratings)](https://appshunter.io/ios/app/synthmaster-one-for-iphone/id1490902617/reviews)** | [3.4 (89 ratings)](https://appshunter.io/ios/app/octane-mobile-auv3/id1586784492/reviews) |
| Number of ratings | **331** | 89 |
| Positive reviews | **66.0% of reviews** | 20.0% 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 | 297 MB | 76 MB |
| Requires iOS | 10.0 | **9.3** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [KV331 Audio](https://appshunter.io/developer/944155925) | [SoundWare, Inc.](https://appshunter.io/developer/1130726631) |

## What reviewers say

### SynthMaster One for iPhone

[App page](https://appshunter.io/ios/app/synthmaster-one-for-iphone/id1490902617)

This powerful wavetable synthesizer app offers an intuitive workflow for creating new sounds. It features a rich library of wavetables, inspiring factory presets, and real-time modulation feedback for sound design.

**Highlights:** Wavetable synthesis, 300 factory presets, AUv3 support, Files App integration, Real-time modulation feedback, Semi-modular architecture, 32-step arpeggiator/sequencer

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BigTone Club Construction Set | $4.99 | one-time |
| True Trance Sounds Volume 1 | $4.99 | one-time |
| Vandalism Future House | $4.99 | one-time |
| NatLife Retrowave Sounds Vol.1 | $4.99 | one-time |
| Demis Hellen Euphoric Trance | $4.99 | one-time |
| NatLife Progressive&Deep Vol.1 | $4.99 | one-time |
| Vandalism Shocking Future Bass | $4.99 | one-time |
| Venus Theory Trap Sounds | $4.99 | one-time |
| Desktop Presets Upgrade | $9.99 | one-time |
| SM One Expansions Bundle | $24.99 | one-time |

**What reviewers like**

- ✨ Excellent sound quality
- 🤩 Incredible features for free
- 👍 Easy to use interface
- 🎛️ Versatile sound design capabilities
- 🎵 Great for GarageBand integration

**What reviewers complain about**

- 🐛 Frequent crashes
- 🔌 Issues with GarageBand integration
- 💸 In-app purchase problems
- 🔄 Presets not saving
- 📉 App appears abandoned

**Reported bugs**

- App crashes when loading saved presets
- App crashes when setting default sound
- AUv3 option disappears in GarageBand
- Inability to reload user patches without crashing
- Inability to purchase certain IAP packs

**Requested features**

- Fix in-app purchase issues
- Improve GarageBand AUv3 stability
- Enable saving of custom presets
- Address crashing when loading presets
- Fix note pitch issues


### OCTANE Mobile

[App page](https://appshunter.io/ios/app/octane-mobile-auv3/id1586784492)

This audio plugin offers a vast library of over 1,000 instruments and presets, along with extensive effects and layering capabilities. It allows producers to quickly find and shape sounds for their music, with new content added weekly. The app also features a 6-band equalizer and dynamics tools for precise sound manipulation.

**Highlights:** 1,000+ Instruments & Presets, Reverb, Delay, Filter, Distortion, Layering with ADSR & Arpeggiator, 6-Band Equalizer, Dynamics & Lo-Fi Effects, Weekly Sound Pack Updates

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| In My Bag (Drum Kits) | $1.99 | one-time |
| Industry Standards | $1.99 | one-time |
| LoFi Vibes | $1.99 | one-time |
| Trap Star | $1.99 | one-time |
| Cinematic Pack | $1.99 | one-time |
| Love Lust Pack | $1.99 | one-time |
| In My Bag 2 | $1.99 | one-time |
| Guitar Pack | $1.99 | one-time |
| 808 Legends | $1.99 | one-time |
| OCTANE | $3.99 | one-time |

**What reviewers like**

- 🎵 Rich, high-quality sound packs
- 🎨 Intuitive and visually appealing GUI
- 💰 Affordable pricing for features offered
- 🔄 Cross-platform access (iOS, desktop, iPad)
- 🎹 Diverse layering and sound editing options

**What reviewers complain about**

- 🐛 Frequent crashes and freezing
- 🚫 Incompatible with GarageBand and Logic Pro
- 🔐 Mandatory account creation before use
- 📥 Download failures at 99% completion
- ⚠️ Requires internet connection to function

**Reported bugs**

- App crashes on launch or during initial download
- Download failures at 99.9% completion
- Login page not found or account creation fails
- Password authentication not working despite correct credentials
- App doesn't appear as AUv3 in GarageBand or Logic Pro

**Requested features**

- Free trial or demo before purchase
- Transparent pricing in app description
- Offline mode capability
- Keyboard zoom and stretch options
- Next/previous preset buttons


## Frequently asked questions

### Is SynthMaster One for iPhone free?

SynthMaster One for iPhone is free to download, with in-app purchases available.

### Is OCTANE Mobile free?

OCTANE Mobile is free to download, with in-app purchases available.

### Which has better reviews, SynthMaster One for iPhone or OCTANE Mobile?

SynthMaster One for iPhone is rated higher. SynthMaster One for iPhone averages 4.8 out of 5 from 331 ratings, while OCTANE Mobile averages 3.4 from 89 ratings.

### Do SynthMaster One for iPhone or OCTANE Mobile have ads?

Neither SynthMaster One for iPhone nor OCTANE Mobile shows ads.

### Which is updated more often, SynthMaster One for iPhone or OCTANE Mobile?

SynthMaster One for iPhone ships an update every 2 months, and OCTANE Mobile monthly. Most recently, SynthMaster One for iPhone was updated on September 19, 2026 and OCTANE Mobile on August 15, 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.*