# SynthMaster One for iPhone vs Synthesizer Pro

The clearest difference is review sentiment: SynthMaster One for iPhone at 66% against Synthesizer Pro's 0%. SynthMaster One for iPhone also leads on rating (4.8 vs 1.0) and update cadence (every 2 months vs every 23 months). Synthesizer Pro'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. Synthesizer Pro asks for nothing beyond the download.

SynthMaster One for iPhone holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: SynthMaster One for iPhone has 331 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 66% of SynthMaster One for iPhone's written reviews are positive against 0% of Synthesizer Pro's.

SynthMaster One for iPhone ships an update every 2 months, Synthesizer Pro every 23 months. The most recent releases landed on September 19, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | SynthMaster One for iPhone | Synthesizer Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (331 ratings)](https://appshunter.io/ios/app/synthmaster-one-for-iphone/id1490902617/reviews)** | [1.0 (3 ratings)](https://appshunter.io/ios/app/synthesizer-pro/id6473576815/reviews) |
| Number of ratings | **331** | 3 |
| Positive reviews | **66.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 23 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 297 MB | 57 MB |
| Requires iOS | **10.0** | 11.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [KV331 Audio](https://appshunter.io/developer/944155925) | [PT Patel](https://appshunter.io/developer/1259901941) |

## 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


### Synthesizer Pro

[App page](https://appshunter.io/ios/app/synthesizer-pro/id6473576815)

This music creation app offers a powerful synthesis engine, intuitive controls, and a versatile sound library for crafting unique sonic textures. Seamlessly integrate with DAWs and utilize advanced sequencing, arpeggiation, and studio-quality effects to elevate your musical compositions.

**Highlights:** Advanced synthesis engine, Intuitive sound shaping controls, Versatile sound library with presets, Deep DAW integration, Sequencing and arpeggiation tools, Studio-quality effects

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SynthMaster One for iPhone free?

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

### Is Synthesizer Pro free?

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

### Which has better reviews, SynthMaster One for iPhone or Synthesizer Pro?

SynthMaster One for iPhone is rated higher. SynthMaster One for iPhone averages 4.8 out of 5 from 331 ratings, while Synthesizer Pro averages 1.0 from 3 ratings.

### Do SynthMaster One for iPhone or Synthesizer Pro have ads?

Neither SynthMaster One for iPhone nor Synthesizer Pro shows ads.

### Which is updated more often, SynthMaster One for iPhone or Synthesizer Pro?

SynthMaster One for iPhone ships an update every 2 months, and Synthesizer Pro every 23 months. Most recently, SynthMaster One for iPhone was updated on September 19, 2026 and Synthesizer Pro on September 9, 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.*