# Discovery AUv3 Synth vs Theremin Air

The clearest difference is price: Theremin Air at Free against Discovery AUv3 Synth's $19.99. Discovery AUv3 Synth's advantage is update cadence (weekly vs every 5 weeks) and device support (3 vs 1). On ads, in-app purchases and iOS requirement there is nothing between them.

Theremin Air is free to download; Discovery AUv3 Synth costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Discovery AUv3 Synth ships an update weekly, Theremin Air every 5 weeks. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Discovery AUv3 Synth | Theremin Air |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | **[4.3 (6 ratings)](https://appshunter.io/ios/app/discovery-auv3-synth/id6695741686/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 76.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 5 weeks |
| Monetization | Paid | — |
| Size | 42 MB | 74 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [DiscoDSP LLC](https://appshunter.io/developer/1465262828) | [Julien CICLET](https://appshunter.io/developer/6779519081) |

## What reviewers say

### Discovery AUv3 Synth

[App page](https://appshunter.io/ios/app/discovery-auv3-synth/id6695741686)

This powerful virtual analog synthesizer offers a vast sound library and advanced features for musicians and sound designers. Create complex sounds with multi-layering, morphing parameters, and built-in effects. Import classic synth patches and utilize rhythmic tools for unique sonic exploration.

**Highlights:** 4 Layers Per Patch, Over 3,500 Presets, Nord Lead 2 Patch Import, Parameter Morphing, Built-in Effects (Chorus, Phaser, Delay), Advanced Filters (8 types), Gate and Arpeggiator

**Features:** macOS Compatibility

**In-app purchases:** none


### Theremin Air

[App page](https://appshunter.io/ios/app/theremin-air/id6779519079)

**In-app purchases:** none


## Frequently asked questions

### Is Discovery AUv3 Synth free?

Discovery AUv3 Synth costs $19.99, with no in-app purchases.

### Is Theremin Air free?

Theremin Air is free to download, with no in-app purchases.

### Do Discovery AUv3 Synth or Theremin Air have ads?

Neither Discovery AUv3 Synth nor Theremin Air shows ads.

### Which is updated more often, Discovery AUv3 Synth or Theremin Air?

Discovery AUv3 Synth ships an update weekly, and Theremin Air every 5 weeks. Most recently, Discovery AUv3 Synth was updated on October 30, 2026 and Theremin Air on November 5, 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.*