# Windy vs ThereminAir

The clearest difference is price: Windy at Free against ThereminAir's $3.99. Windy also leads on ratings volume (40 vs 1) and iOS requirement (11.3 vs 17.0). ThereminAir's advantage is rating (5.0 vs 4.0) and in-app purchases (none vs 1). On ads and device support there is nothing between them.

Windy is free to download; ThereminAir costs $3.99 up front. Windy sells 1 one-off in-app purchase. ThereminAir asks for nothing beyond the download.

ThereminAir holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Windy has 40 ratings behind it against 1, so its average is the more settled of the two.

Windy ships an update monthly, ThereminAir every 11 days. The most recent releases landed on October 22, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Windy | ThereminAir |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | [4.0 (40 ratings)](https://appshunter.io/ios/app/windy/id800758888/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/thereminair-theremin-synth/id6772935515/reviews)** |
| Number of ratings | **40** | 1 |
| Positive reviews | 51.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 11 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 8 MB | 2 MB |
| Requires iOS | **11.3** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Kindred, Inc.](https://appshunter.io/developer/645807741) | [Tom Pardee](https://appshunter.io/developer/1882976406) |

## What reviewers say

### Windy

[App page](https://appshunter.io/ios/app/windy/id800758888)

This app transforms your device into a playable musical instrument. Learn to play songs interactively by blowing into your device's microphone and using its tilt controls for different notes and octaves. Enjoy playing along with guided songs or improvising freely.

**Highlights:** Play like a real instrument, Interactive song playback, Tilt controls for notes, Octave control, Guided songs, Device microphone input

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Windy Plus | $1.99 | one-time |

**What reviewers like**

- 👍 Easy to use and make music
- 💡 Clever and innovative concept
- ✨ Attractive interface
- 🤩 Fun and entertaining
- 🚀 Seamless design

**What reviewers complain about**

- 🐛 Crashes after update
- 🐛 Stops working after first minute
- 🐛 Keeps closing when tilting phone
- 🐛 No sound output
- 🐛 Sound not working

**Reported bugs**

- App crashes after update
- App stops working after first minute
- App closes when phone is tilted
- No sound output from the app
- Sound not working at all

**Requested features**

- Add more instruments (harmonica, clarinet, oboe, french horn)
- Allow resizing and moving buttons on screen
- Add dynamic range (volume) for each note
- Add reverb
- Prevent sound dropout when changing fingers


### ThereminAir

[App page](https://appshunter.io/ios/app/thereminair-theremin-synth/id6772935515)

This app transforms your Apple Watch into a unique theremin instrument. Play music through arm gestures, controlling pitch and volume without touching any buttons. Explore different modes and scales to create a variety of sounds.

**Highlights:** Gesture-based pitch and volume control, Pure mode for continuous glide, Scale modes for staying in tune, Adjustable pitch ranges and vibrato depths, Live readout of frequency and note name, Complication for instant play

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Windy free?

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

### Is ThereminAir free?

ThereminAir costs $3.99, with no in-app purchases.

### Which has better reviews, Windy or ThereminAir?

ThereminAir is rated higher. Windy averages 4.0 out of 5 from 40 ratings, while ThereminAir averages 5.0 from 1 ratings.

### Do Windy or ThereminAir have ads?

Neither Windy nor ThereminAir shows ads.

### Which is updated more often, Windy or ThereminAir?

Windy ships an update monthly, and ThereminAir every 11 days. Most recently, Windy was updated on October 22, 2026 and ThereminAir on October 11, 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.*