# polymachine vs Roboto AUv3 Singing Synth

The clearest difference is in-app purchases: Roboto AUv3 Singing Synth at none against polymachine's 2. polymachine's advantage is review sentiment (67% vs 33%). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. polymachine sells 2 one-off in-app purchases. Roboto AUv3 Singing Synth asks for nothing beyond the download.

polymachine ships an update weekly, Roboto AUv3 Singing Synth every 9 days. The most recent releases landed on October 31, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | polymachine | Roboto AUv3 Singing Synth |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (13 ratings)](https://appshunter.io/ios/app/polymachine/id6761276852/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | **66.7% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 9 days |
| Monetization | Paid | **Free** |
| Size | 106 MB | 18 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mike Gao](https://appshunter.io/developer/384844113) | [DiscoDSP LLC](https://appshunter.io/developer/1465262828) |

## What reviewers say

### polymachine

[App page](https://appshunter.io/ios/app/polymachine/id6761276852)

This app offers a unique approach to music creation by combining geometric principles with modular synthesis. Explore generative algorithmic drums, oscillators, and harmonies, with specialized tools for 808s and kick drum integration.

**Highlights:** Geometric music theory integration, Modular synthesis engine, Generative algorithmic drums, Oscillators and harmonies, 808 and kick drum linking, Log drum pattern generator

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sound Expansion | $1.99 | one-time |
| Pro Features | $34.99 | one-time |


### Roboto AUv3 Singing Synth

[App page](https://appshunter.io/ios/app/roboto-auv3-singing-synth/id6818868674)

Create synthesized singing voices by drawing melodies and typing lyrics. Offers ten distinct voice presets, extensive vocal parameter control, and automation curves. Export your creations as WAV audio or MIDI files.

**Highlights:** Piano roll melody editor, Lyric input per note, Ten voice presets, Vocal parameter automation, WAV audio export, MIDI file export, AUv3 and standalone support

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is polymachine free?

polymachine is free to download, with in-app purchases available.

### Is Roboto AUv3 Singing Synth free?

Roboto AUv3 Singing Synth is free to download, with no in-app purchases.

### Do polymachine or Roboto AUv3 Singing Synth have ads?

Neither polymachine nor Roboto AUv3 Singing Synth shows ads.

### Which is updated more often, polymachine or Roboto AUv3 Singing Synth?

polymachine ships an update weekly, and Roboto AUv3 Singing Synth every 9 days. Most recently, polymachine was updated on October 31, 2026 and Roboto AUv3 Singing Synth on November 1, 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.*