# SynthMaster One vs Hammerhead Rhythm Station

The clearest difference is in-app purchases: Hammerhead Rhythm Station at none against SynthMaster One's 11. Hammerhead Rhythm Station also leads on review sentiment (98% vs 64%) and update cadence (every 2 weeks vs every 2 months). SynthMaster One's advantage is ratings volume (742 vs 108) and iOS requirement (10.0 vs 12.0). On ads and device support there is nothing between them.

SynthMaster One costs $9.99 and Hammerhead Rhythm Station $7.99 up front. SynthMaster One sells 11 one-off in-app purchases. Hammerhead Rhythm Station asks for nothing beyond the download.

Hammerhead Rhythm Station holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: SynthMaster One has 742 ratings behind it against 108, so its average is the more settled of the two. Written reviews point the same way: 64% of SynthMaster One's written reviews are positive against 98% of Hammerhead Rhythm Station's.

SynthMaster One ships an update every 2 months, Hammerhead Rhythm Station every 2 weeks. The most recent releases landed on October 22, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | SynthMaster One | Hammerhead Rhythm Station |
| --- | --- | --- |
| Price | $9.99 | **$7.99** |
| Rating | [4.7 (742 ratings)](https://appshunter.io/ios/app/synthmaster-one/id1254353266/reviews) | **[4.9 (108 ratings)](https://appshunter.io/ios/app/hammerhead-rhythm-station/id1568699989/reviews)** |
| Number of ratings | **742** | 108 |
| Positive reviews | 63.8% of reviews | **98.5% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 402 MB | 172 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KV331 Audio](https://appshunter.io/developer/944155925) | [Bram Bos](https://appshunter.io/developer/325340444) |

## What reviewers say

### SynthMaster One

[App page](https://appshunter.io/ios/app/synthmaster-one/id1254353266)

This powerful wavetable synthesizer app offers an intuitive workflow for creating unique sounds. It features a rich library of wavetables, inspiring presets, and a semi-modular architecture for deep sound design. Easily sync data across devices and integrate with DAWs.

**Highlights:** Wavetable synthesis, Semi-modular architecture, 650 factory presets, AUv3 support, Cross-platform cloud sync, Real-time modulation feedback, 32-step arpeggiator/sequencer

**In-app purchases (11)**

| 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 |
| Venus Theory Trap Sounds | $4.99 | one-time |
| Vandalism Shocking Future Bass | $4.99 | one-time |
| NatLife Progressive&Deep Vol.1 | $4.99 | one-time |
| Bluffmunkey Cinematic Sounds | $4.99 | one-time |
| Desktop Presets Upgrade | $7.99 | one-time |
| SM One Expansions Bundle | $24.99 | one-time |

**What reviewers like**

- 🚀 Powerful synth engine
- 👍 Extensive preset library
- 🎨 Versatile sound design capabilities
- 💡 Free desktop version expansions on iPad
- 🎹 Excellent sound quality and tone

**What reviewers complain about**

- 🐛 Crashes and stability issues
- 🔋 Battery drain in background
- 🤔 Confusing in-app purchase system
- 👎 UI/UX could use improvement
- 🔇 Audio issues and no sound

**Reported bugs**

- Stuck notes and MIDI issues
- Preset loading crashes
- Restore purchases not working
- Incompatibility with certain DAWs

**Requested features**

- Add custom wavetable support
- Improve MIDI mapping and MPE functionality
- Optimize performance on older devices
- Streamline preset management and browsing


### Hammerhead Rhythm Station

[App page](https://appshunter.io/ios/app/hammerhead-rhythm-station/id1568699989)

This mobile app is a modern take on a classic software drum computer, offering a playful and intuitive way to create rhythms. It features a built-in drum synth, extensive sound options, and the ability to import custom audio, all within a pocket-sized groovebox experience.

**Highlights:** Import custom WAV sounds, Built-in drum synthesizer, Standalone and AUv3 plugin support, MIDI input and output, One-click compression and distortion, Random pattern generator, Create polyrhythms

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use and intuitive workflow
- 💡 Great for improvisational music making
- 🎶 Excellent sound quality and presets
- 🚀 Quick to use with amazing results
- 💾 Ability to import own audio samples

**What reviewers complain about**

- ❓ Some users want more features
- 🎛️ Limited effects per voice
- 🎚️ MIDI mapping could be more extensive
- 🎛️ Drum synth engine could be deeper
- 🎚️ User folder for voices in-app needed

**Reported bugs**

- AUv3 starts playing in sequence mode on pattern 2 instead of pattern 1
- Mute buttons are somewhat hard to tap reliably
- Upper knobs are somewhat hard to tune
- Chan. Config button makes pattern settings disappear

**Requested features**

- Deeper drum synth engine
- More extensive MIDI mapping (solo per voice)
- User folder for voices in-app
- Ability to send presets into user storage
- Effects per voice


## Frequently asked questions

### Is SynthMaster One free?

SynthMaster One costs $9.99, and also offers in-app purchases.

### Is Hammerhead Rhythm Station free?

Hammerhead Rhythm Station costs $7.99, with no in-app purchases.

### Which has better reviews, SynthMaster One or Hammerhead Rhythm Station?

Hammerhead Rhythm Station is rated higher. SynthMaster One averages 4.7 out of 5 from 742 ratings, while Hammerhead Rhythm Station averages 4.9 from 108 ratings.

### Do SynthMaster One or Hammerhead Rhythm Station have ads?

Neither SynthMaster One nor Hammerhead Rhythm Station shows ads.

### Which is updated more often, SynthMaster One or Hammerhead Rhythm Station?

SynthMaster One ships an update every 2 months, and Hammerhead Rhythm Station every 2 weeks. Most recently, SynthMaster One was updated on October 22, 2026 and Hammerhead Rhythm Station on October 23, 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.*