# iSyn Poly vs SynthMaster One

The clearest difference is price: iSyn Poly at $0.99 against SynthMaster One's $9.99. iSyn Poly also leads on in-app purchases (none vs 11) and iOS requirement (8.0 vs 10.0). SynthMaster One's advantage is rating (4.7 vs 4.3) and ratings volume (743 vs 4). On review sentiment and ads there is nothing between them.

iSyn Poly costs $0.99 and SynthMaster One $9.99 up front. SynthMaster One sells 11 one-off in-app purchases. iSyn Poly asks for nothing beyond the download.

SynthMaster One holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: SynthMaster One has 743 ratings behind it against 4, so its average is the more settled of the two. Written reviews split almost evenly too, at 64% and 64% positive.

iSyn Poly ships an update every 6 months, SynthMaster One every 2 months. The most recent releases landed on September 25, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | iSyn Poly | SynthMaster One |
| --- | --- | --- |
| Price | **$0.99** | $9.99 |
| Rating | [4.3 (4 ratings)](https://appshunter.io/ios/app/isyn-poly/id443141370/reviews) | **[4.7 (743 ratings)](https://appshunter.io/ios/app/synthmaster-one/id1254353266/reviews)** |
| Number of ratings | 4 | **743** |
| Positive reviews | **64.0% of reviews** | 63.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 19 MB | 402 MB |
| Requires iOS | **8.0** | 10.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Harry Gohs](https://appshunter.io/developer/382428644) | [KV331 Audio](https://appshunter.io/developer/944155925) |

## What reviewers say

### iSyn Poly

[App page](https://appshunter.io/ios/app/isyn-poly/id443141370)

Create electronic music with three virtual analog synthesizers and a drum machine. Features a full sequencer for arranging songs and live editing capabilities. Supports external MIDI keyboards for enhanced control.

**Highlights:** Three programmable virtual analog synthesizers, Sample playback drum machine with 17 kits, Full-featured four-track sequencer, Gesture-oriented user interface for live editing, Support for CoreMIDI compatible hardware keyboards, Global effects unit with phaser, flanger, chorus, and delay

**In-app purchases:** none


### 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


## Frequently asked questions

### Is iSyn Poly free?

iSyn Poly costs $0.99, with no in-app purchases.

### Is SynthMaster One free?

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

### Which has better reviews, iSyn Poly or SynthMaster One?

SynthMaster One is rated higher. iSyn Poly averages 4.3 out of 5 from 4 ratings, while SynthMaster One averages 4.7 from 743 ratings.

### Do iSyn Poly or SynthMaster One have ads?

Neither iSyn Poly nor SynthMaster One shows ads.

### Which is updated more often, iSyn Poly or SynthMaster One?

iSyn Poly ships an update every 6 months, and SynthMaster One every 2 months. Most recently, iSyn Poly was updated on September 25, 2026 and SynthMaster One on October 14, 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.*