# Sonu vs Breth.

The clearest difference is rating: Breth. at 5.0 against Sonu's 4.4. Breth. also leads on review sentiment (100% vs 74%). Sonu's advantage is ratings volume (227 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Breth. holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Sonu has 227 ratings behind it against 1, 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 Breth.'s.

Sonu ships an update every 3 weeks, Breth. every 2 weeks. The most recent releases landed on September 28, 2026 and July 10, 2026 respectively.

## The numbers

| Metric | Sonu | Breth. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (227 ratings)](https://appshunter.io/ios/app/sonu/id1597730467/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/breth/id6502418753/reviews)** |
| Number of ratings | **227** | 1 |
| Positive reviews | 74.5% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 191 MB | 228 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sound Health Systems, Inc.](https://appshunter.io/developer/1500011226) | [True Angle Medical Technologies Inc.](https://appshunter.io/developer/1247584741) |

## 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


### Breth.

[App page](https://appshunter.io/ios/app/breth/id6502418753)

This app offers immersive breathwork exercises synchronized with haptic vibrations and audio-visual cues. It helps improve focus, reduce stress, and promote restful sleep through personalized breathing patterns. Designed for all levels, it makes daily self-care intuitive and joyful.

**Highlights:** Personalized breathwork recommendations, Immersive haptic vibrations, Synchronized shared sessions, Offline mode for on-the-go use, Customizable session intensity and duration, Portable for anytime, anywhere use

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sonu free?

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

### Is Breth. free?

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

### Which has better reviews, Sonu or Breth.?

Breth. is rated higher. Sonu averages 4.4 out of 5 from 227 ratings, while Breth. averages 5.0 from 1 ratings.

### Do Sonu or Breth. have ads?

Neither Sonu nor Breth. shows ads.

### Which is updated more often, Sonu or Breth.?

Sonu ships an update every 3 weeks, and Breth. every 2 weeks. Most recently, Sonu was updated on September 28, 2026 and Breth. on July 10, 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.*