# SynthMaster One vs Hilda Synthesizer

The clearest difference is in-app purchases: Hilda Synthesizer at none against SynthMaster One's 11. Hilda Synthesizer also leads on update cadence (every 9 days vs every 2 months) and review sentiment (90% vs 64%). SynthMaster One's advantage is ratings volume (743 vs 58) and price ($9.99 vs $12.99). On ads and device support there is nothing between them.

SynthMaster One costs $9.99 and Hilda Synthesizer $12.99 up front. SynthMaster One sells 11 one-off in-app purchases. Hilda Synthesizer asks for nothing beyond the download.

Hilda Synthesizer holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: SynthMaster One has 743 ratings behind it against 58, 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 90% of Hilda Synthesizer's.

SynthMaster One ships an update every 2 months, Hilda Synthesizer every 9 days. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | SynthMaster One | Hilda Synthesizer |
| --- | --- | --- |
| Price | **$9.99** | $12.99 |
| Rating | [4.7 (743 ratings)](https://appshunter.io/ios/app/synthmaster-one/id1254353266/reviews) | **[4.9 (58 ratings)](https://appshunter.io/ios/app/hilda-synthesizer/id6447191659/reviews)** |
| Number of ratings | **743** | 58 |
| Positive reviews | 63.8% of reviews | **90.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | **#188** | — |
| Size | 402 MB | 6 MB |
| Requires iOS | **10.0** | 12 |
| 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)

**Currently charting:** #188 Top Paid · Music (US App Store)

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


### Hilda Synthesizer

[App page](https://appshunter.io/ios/app/hilda-synthesizer/id6447191659)

This app offers a complex oscillator monosynth with a blend of west-coast and east-coast synthesis techniques. It features a wave folder, lowpass gate, 12-mode filter, and VCA circuit, all meticulously circuit-modelled for authentic analog or digital sound. It functions as a playable synth, MIDI sequencer, and audio effect.

**Highlights:** Complex Oscillator Monosynth, Wave folder and lowpass gate, 12-mode filter, Circuit-modelled analog sound, Built-in 16-step MIDI Sequencer, Audio effect for external audio, AUv3 compatibility

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SynthMaster One free?

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

### Is Hilda Synthesizer free?

Hilda Synthesizer costs $12.99, with no in-app purchases.

### Which has better reviews, SynthMaster One or Hilda Synthesizer?

Hilda Synthesizer is rated higher. SynthMaster One averages 4.7 out of 5 from 743 ratings, while Hilda Synthesizer averages 4.9 from 58 ratings.

### Do SynthMaster One or Hilda Synthesizer have ads?

Neither SynthMaster One nor Hilda Synthesizer shows ads.

### Which is updated more often, SynthMaster One or Hilda Synthesizer?

SynthMaster One ships an update every 2 months, and Hilda Synthesizer every 9 days. Most recently, SynthMaster One was updated on October 26, 2026 and Hilda Synthesizer on October 25, 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.*