# Sonu vs ButeykoClinic®

The clearest difference is update cadence: Sonu at every 3 weeks against ButeykoClinic®'s every 5 months. Sonu also leads on ratings volume (227 vs 3). ButeykoClinic®'s advantage is review sentiment (100% vs 74%) and rating (4.7 vs 4.4). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ButeykoClinic® holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Sonu has 227 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 74% of Sonu's written reviews are positive against 100% of ButeykoClinic®'s.

Sonu ships an update every 3 weeks, ButeykoClinic® every 5 months. The most recent releases landed on September 14, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Sonu | ButeykoClinic® |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (227 ratings)](https://appshunter.io/ios/app/sonu/id1597730467/reviews) | **[4.7 (3 ratings)](https://appshunter.io/ios/app/buteykoclinic/id6478960199/reviews)** |
| Number of ratings | **227** | 3 |
| Positive reviews | 74.5% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 months |
| Monetization | Free | Free |
| Size | 191 MB | 61 MB |
| Requires iOS | 17.0 | **16.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sound Health Systems, Inc.](https://appshunter.io/developer/1500011226) | [Oxygen Research Institute Ltd.](https://appshunter.io/developer/1589260952) |

## What reviewers say

### Sonu

[App page](https://appshunter.io/ios/app/sonu/id1597730467)

This app offers personalized, drug-free acoustic resonance therapy for nasal congestion relief. It uses AI and facial scanning to tailor treatments, delivered via a separate wearable band. Track your progress and enjoy convenient, at-home therapy sessions.

**Highlights:** Personalized acoustic resonance therapy, Drug-free treatment, AI-enhanced facial scanning, Bluetooth connectivity, Treatment session tracking, Micro vibration options

**In-app purchases:** none

**What reviewers like**

- 👍 Product works well
- 👍 Drug-free congestion relief
- 👍 Effective for sinus issues
- 👍 Helps with breathing
- 👍 Revolutionary technology

**What reviewers complain about**

- 🐛 App has declined
- 🐛 New app confusing
- 🐛 Old features gone
- 🐛 Core functionality buried
- 🐛 Difficult to use (new app)

**Reported bugs**

- Infinite login loop
- App locks after session end
- Bluetooth connection issues
- Offline mode non-functional
- Cannot end session

**Requested features**

- Bring back old features
- Provide battery life indicator
- Add warning for high audio
- Restore alignment check
- Allow disconnection from band


### ButeykoClinic®

[App page](https://appshunter.io/ios/app/buteykoclinic/id6478960199)

Learn a physician-developed breathing program to enhance immunity, reduce stress, and improve sleep and overall health for adults and children. Access guided exercises, track progress, and test your breathing capacity.

**Highlights:** Video program for children and teens, Guided breathing and relaxation for adults, Control Pause breathing test, Progress tracking, Links to resources, Find an instructor

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sonu free?

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

### Is ButeykoClinic® free?

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

### Which has better reviews, Sonu or ButeykoClinic®?

ButeykoClinic® is rated higher. Sonu averages 4.4 out of 5 from 227 ratings, while ButeykoClinic® averages 4.7 from 3 ratings.

### Do Sonu or ButeykoClinic® have ads?

Neither Sonu nor ButeykoClinic® shows ads.

### Which is updated more often, Sonu or ButeykoClinic®?

Sonu ships an update every 3 weeks, and ButeykoClinic® every 5 months. Most recently, Sonu was updated on September 14, 2026 and ButeykoClinic® on September 17, 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.*