# SynthMaster One vs FRMS

SynthMaster One and FRMS both sit at 4.7 stars, but that hides the real split: 85% of FRMS's written reviews are positive against 64% of SynthMaster One's. FRMS also leads on price ($8.99 vs $9.99). SynthMaster One's advantage is chart position (#188 vs unranked) and iOS requirement (10.0 vs 17.0). On rating, ratings volume, update cadence and ads there is nothing between them.

SynthMaster One costs $9.99 and FRMS $8.99 up front. SynthMaster One sells 11 one-off in-app purchases and FRMS sells 16 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for SynthMaster One against 4.8 for FRMS. Both are backed by a comparable volume of ratings — 743 and 284 respectively. Written reviews are what separate them: 64% of SynthMaster One's written reviews are positive against 85% of FRMS's.

Both ship on a similar rhythm, roughly every 2 months. Both last shipped on October 26, 2026.

## The numbers

| Metric | SynthMaster One | FRMS |
| --- | --- | --- |
| Price | $9.99 | **$8.99** |
| Rating | [4.7 (743 ratings)](https://appshunter.io/ios/app/synthmaster-one/id1254353266/reviews) | **[4.8 (284 ratings)](https://appshunter.io/ios/app/frms-granular-synthesizer/id1381392223/reviews)** |
| Number of ratings | **743** | 284 |
| Positive reviews | 63.8% of reviews | **84.6% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#188** | — |
| Size | 402 MB | 267 MB |
| Requires iOS | **10.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [KV331 Audio](https://appshunter.io/developer/944155925) | [Imaginando Lda](https://appshunter.io/developer/895445015) |

## 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


### FRMS

[App page](https://appshunter.io/ios/app/frms-granular-synthesizer/id1381392223)

This app offers a powerful and flexible layering system for creating unique audio experiences. It blends multiple synthesis types, allowing users to craft everything from ambient soundscapes to glitchy textures. Import your own sounds or use the curated library for endless sonic exploration.

**Highlights:** 4 Synthesis Engines per voice, FM Modes & Operator Stacking, Real-Time Granulation, Deep Modulation & Envelope Control, Advanced FX & Polyphony, MPE Compatibility

**Features:** Family Sharing, Vision Pro support

**In-app purchases (16)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fragmented Chants | $5.99 | one-time |
| Euphoria Preset Pack | $6.49 | one-time |
| Ghost Signals Preset Pack | $7.99 | one-time |
| Supremeja Music Preset Pack | $8.99 | one-time |
| Sounds Of Saxophone | $8.99 | one-time |
| Glitches From The Heart | $8.99 | one-time |
| Sounds Of Guitar Preset Pack | $8.99 | one-time |
| Antique Shop Preset Pack | $8.99 | one-time |
| Sounds Of Clarinet Preset Pack | $8.99 | one-time |
| Sounds Of Bassoon Preset Pack | $8.99 | one-time |
| Sounds Of Foley 1 | $8.99 | one-time |
| Scratching The Surface 1 | $8.99 | one-time |
| Sounds Of Saxophone 2 Pack | $8.99 | one-time |
| Aural Alchemy 2 - Collector Edition | $11.99 | one-time |
| The Book Of Genesis | $11.99 | one-time |
| Aural Alchemy | $11.99 | one-time |

**What reviewers like**

- 🎨 Fantastic sound design
- 👍 Intuitive and well-designed interface
- 🎶 Inspiring and creative sound possibilities
- 💻 Works great on iPad and desktop
- 🔑 Excellent preset packs

**What reviewers complain about**

- 🔋 CPU-intensive, can cause performance issues
- 🔇 Bluetooth connectivity problems
- 💰 Expensive in-app purchases

**Reported bugs**

- Crashes and audio glitches in certain DAW environments
- Issues with sample playback and freezing

**Requested features**

- Ability to import larger sample files
- More granular control over modulation parameters
- Undo/redo functionality
- Improved MIDI integration and learn capabilities


## Frequently asked questions

### Is SynthMaster One free?

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

### Is FRMS free?

FRMS costs $8.99, and also offers in-app purchases.

### Which has better reviews, SynthMaster One or FRMS?

FRMS is rated higher. SynthMaster One averages 4.7 out of 5 from 743 ratings, while FRMS averages 4.8 from 284 ratings.

### Do SynthMaster One or FRMS have ads?

Neither SynthMaster One nor FRMS shows ads.

### Which is updated more often, SynthMaster One or FRMS?

SynthMaster One ships an update every 2 months, and FRMS every 2 months. Most recently, SynthMaster One was updated on October 26, 2026 and FRMS on October 26, 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.*