# Sonu vs CapnoTrainer

The clearest difference is iOS requirement: CapnoTrainer at 13.0 against Sonu's 18.0. 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.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 10, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Sonu | CapnoTrainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (232 ratings)](https://appshunter.io/ios/app/sonu/id1597730467/reviews)** | — |
| Number of ratings | **232** | — |
| Positive reviews | 73.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | — |
| Size | 209 MB | 54 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sound Health Systems, Inc.](https://appshunter.io/developer/1500011226) | [Muhammad Arshad Khan](https://appshunter.io/developer/1617354083) |

## 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


### CapnoTrainer

[App page](https://appshunter.io/ios/app/capnotrainer/id1617354081)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sonu free?

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

### Is CapnoTrainer free?

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

### Do Sonu or CapnoTrainer have ads?

Neither Sonu nor CapnoTrainer shows ads.

### Which is updated more often, Sonu or CapnoTrainer?

Sonu ships an update every 3 weeks, and CapnoTrainer every 3 weeks. Most recently, Sonu was updated on October 10, 2026 and CapnoTrainer on September 29, 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.*