# SynthMaster One for iPhone vs Sound Generator Lab

The clearest difference is iOS requirement: SynthMaster One for iPhone at 10.0 against Sound Generator Lab's 15.6. 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 Sound Generator Lab sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

SynthMaster One for iPhone ships an update every 2 months, Sound Generator Lab every 5 weeks. The most recent releases landed on October 22, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | SynthMaster One for iPhone | Sound Generator Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (331 ratings)](https://appshunter.io/ios/app/synthmaster-one-for-iphone/id1490902617/reviews)** | — |
| Number of ratings | **331** | — |
| Positive reviews | 66.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 297 MB | 23 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [KV331 Audio](https://appshunter.io/developer/944155925) | [akira ohmachi](https://appshunter.io/developer/1338624340) |

## 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


### Sound Generator Lab

[App page](https://appshunter.io/ios/app/sound-generator-lab/id6758279358)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is SynthMaster One for iPhone free?

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

### Is Sound Generator Lab free?

Sound Generator Lab is free to download, with in-app purchases available.

### Do SynthMaster One for iPhone or Sound Generator Lab have ads?

Neither SynthMaster One for iPhone nor Sound Generator Lab shows ads.

### Which is updated more often, SynthMaster One for iPhone or Sound Generator Lab?

SynthMaster One for iPhone ships an update every 2 months, and Sound Generator Lab every 5 weeks. Most recently, SynthMaster One for iPhone was updated on October 22, 2026 and Sound Generator Lab on October 4, 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.*