# Theremin I/O vs Sonobender

The clearest difference is price: Sonobender at Free against Theremin I/O's $2.99. Sonobender also leads on in-app purchases (none vs 1). Theremin I/O's advantage is ads (none vs shown) and chart position (#184 vs unranked). On device support there is nothing between them.

Sonobender is free to download; Theremin I/O costs $2.99 up front. Theremin I/O sells 1 one-off in-app purchase. Sonobender asks for nothing beyond the download.

## The numbers

| Metric | Theremin I/O | Sonobender |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.0 (5 ratings)](https://appshunter.io/ios/app/theremin-io/id669456913/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 76.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 24 months | — |
| Monetization | Paid | — |
| Best chart rank | **#184** | — |
| Size | 18 MB | 21 MB |
| Requires iOS | **8.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | +4 | 4+ |
| Developer | [FFFF00 Agents AB](https://appshunter.io/developer/288966262) | [Ouimin Lee](https://appshunter.io/developer/1860222503) |

## What reviewers say

### Theremin I/O

[App page](https://appshunter.io/ios/app/theremin-io/id669456913)

**Currently charting:** #184 Top Paid · Music (US App Store)

Transform your iPhone into a touchless musical instrument using your camera and flash. Control sound generation by hand proximity, with options for scales, sound presets, and effects. An in-app purchase enables MIDI controller functionality.

**Highlights:** Touchless instrument control via camera, Adjustable scales and harmony quantization, Multiple sound presets with effects, MIDI controller functionality (in-app purchase), Interactive tutorial overlay

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Network MIDI | $5.99 | one-time |


### Sonobender

[App page](https://appshunter.io/ios/app/sonobender/id6756349156)

**In-app purchases:** none


## Frequently asked questions

### Is Theremin I/O free?

Theremin I/O costs $2.99, and also offers in-app purchases.

### Is Sonobender free?

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

### Do Theremin I/O or Sonobender have ads?

Sonobender shows ads; Theremin I/O does not.

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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.*