# AudioPocket for volca sample vs SynthMaster One for iPhone

The clearest difference is review sentiment: SynthMaster One for iPhone at 66% against AudioPocket for volca sample's 22%. SynthMaster One for iPhone also leads on rating (4.8 vs 2.3) and update cadence (every 2 months vs every 27 months). AudioPocket for volca sample's advantage is in-app purchases (none vs 10). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. SynthMaster One for iPhone sells 10 one-off in-app purchases. AudioPocket for volca sample asks for nothing beyond the download.

SynthMaster One for iPhone holds the better App Store score, 4.8 against 2.3. That said, the two scores are not equally well evidenced: SynthMaster One for iPhone has 331 ratings behind it against 59, so its average is the more settled of the two. Written reviews point the same way: 22% of AudioPocket for volca sample's written reviews are positive against 66% of SynthMaster One for iPhone's.

AudioPocket for volca sample ships an update every 27 months, SynthMaster One for iPhone every 2 months. The most recent releases landed on October 9, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | AudioPocket for volca sample | SynthMaster One for iPhone |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (59 ratings)](https://appshunter.io/ios/app/audiopocket-for-volca-sample/id927415821/reviews) | **[4.8 (331 ratings)](https://appshunter.io/ios/app/synthmaster-one-for-iphone/id1490902617/reviews)** |
| Number of ratings | 59 | **331** |
| Positive reviews | 22.4% of reviews | **66.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 27 months | **Every 2 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 22 MB | 297 MB |
| Requires iOS | 11.0 | **10.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KORG INC.](https://appshunter.io/developer/363714046) | [KV331 Audio](https://appshunter.io/developer/944155925) |

## What reviewers say

### AudioPocket for volca sample

[App page](https://appshunter.io/ios/app/audiopocket-for-volca-sample/id927415821)

Easily transfer audio samples from your iPhone to a KORG volca sample device. Record, trim, and normalize your own sounds, or import them via iTunes File Sharing or a factory preset library. Supports various common audio file formats.

**Highlights:** Record and edit samples, Import samples via iTunes File Sharing, Access KORG factory presets, Supports multiple audio formats, Connect iPhone to volca sample

**In-app purchases:** none

**What reviewers like**

- 👍 Easy sample transfer
- 👍 Works for some users
- 👍 Good for on-the-go editing
- 👍 Files.app integration appreciated

**What reviewers complain about**

- 🐛 App crashes on startup
- 🐛 Audio recording/saving issues
- 🐛 Sample transfer errors
- 🐛 No USB support for Volca Sample 2
- 🐛 Outdated for Volca Sample 2

**Reported bugs**

- Crashes on startup (iOS 11)
- App does not record or save audio
- Cannot work with prerecorded audio
- Error when uploading samples to Volca Sample 2
- Audio Pocket does not record audio

**Requested features**

- Update for Volca Sample 2 support (200 slots)
- USB file transfer support
- Support for newer iPhones without headphone jack
- Improve user interface and user experience
- Add editing features (trimming, cropping)


### 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


## Frequently asked questions

### Is AudioPocket for volca sample free?

AudioPocket for volca sample is free to download, with no in-app purchases.

### Is SynthMaster One for iPhone free?

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

### Which has better reviews, AudioPocket for volca sample or SynthMaster One for iPhone?

SynthMaster One for iPhone is rated higher. AudioPocket for volca sample averages 2.3 out of 5 from 59 ratings, while SynthMaster One for iPhone averages 4.8 from 331 ratings.

### Do AudioPocket for volca sample or SynthMaster One for iPhone have ads?

Neither AudioPocket for volca sample nor SynthMaster One for iPhone shows ads.

### Which is updated more often, AudioPocket for volca sample or SynthMaster One for iPhone?

AudioPocket for volca sample ships an update every 27 months, and SynthMaster One for iPhone every 2 months. Most recently, AudioPocket for volca sample was updated on October 9, 2026 and SynthMaster One for iPhone on October 14, 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.*