# Theremin vs Retro Synth

The clearest difference is in-app purchases: Theremin at none against Retro Synth's 3. Theremin also leads on iOS requirement (8.0 vs 17.0). Retro Synth's advantage is rating (4.2 vs 3.9). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Retro Synth sells 3 in-app purchases, starting at $3.99 per month. Theremin asks for nothing beyond the download.

Retro Synth holds the better App Store score, 4.2 against 3.9. Both are backed by a comparable volume of ratings — 11 and 5 respectively.

## The numbers

| Metric | Theremin | Retro Synth |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (11 ratings)](https://appshunter.io/ios/app/theremin-pro/id1090745630/reviews) | **[4.2 (5 ratings)](https://appshunter.io/ios/app/retro-synth-syntophone/id6754520378/reviews)** |
| Number of ratings | **11** | 5 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 16 MB | 14 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jochen Falck](https://appshunter.io/developer/779504523) | [Kerem ERSU](https://appshunter.io/developer/1759709233) |

## What reviewers say

### Theremin

[App page](https://appshunter.io/ios/app/theremin-pro/id1090745630)

This music app allows users to create tones by touching the screen. Moving a finger changes the sound, offering an intuitive and adjustable musical experience.

**Highlights:** Touch-based sound creation, Dynamic sound alteration, Personalizable adjustments, Easy to play interface

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

**In-app purchases:** none


### Retro Synth

[App page](https://appshunter.io/ios/app/retro-synth-syntophone/id6754520378)

Create authentic retro music with this vintage-inspired synthesizer app. Explore sound design with tone controls and vibrato, or upgrade for premium waveforms and studio effects. Designed for instant musical creativity, it offers a portable music-making experience.

**Highlights:** Authentic vintage sound recreation, Tone control for sound shaping, Vibrato effect for musical expression, Zero latency real-time response, Premium waveforms (Sine, Sawtooth, Triangle), Studio effects (Reverb, Delay), MIDI export

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $3.99 | per month |
| Annual Subscription | $24.99 | per year |
| Remove ads | $2.99 | one-time |


## Frequently asked questions

### Is Theremin free?

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

### Is Retro Synth free?

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

### Which has better reviews, Theremin or Retro Synth?

Retro Synth is rated higher. Theremin averages 3.9 out of 5 from 11 ratings, while Retro Synth averages 4.2 from 5 ratings.

### Do Theremin or Retro Synth have ads?

Neither Theremin nor Retro Synth shows ads.

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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.*