# Sonu vs Double Edge Fit

The clearest difference is rating: Double Edge Fit at 5.0 against Sonu's 4.4. Double Edge Fit also leads on iOS requirement (15.0 vs 18.0). Sonu's advantage is ratings volume (232 vs 2). On price, ads, in-app purchases and device support there is nothing between them.

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

Double Edge Fit holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Sonu has 232 ratings behind it against 2, so its average is the more settled of the two.

## The numbers

| Metric | Sonu | Double Edge Fit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (232 ratings)](https://appshunter.io/ios/app/sonu/id1597730467/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/double-edge-fit/id6800428975/reviews)** |
| Number of ratings | **232** | 2 |
| Positive reviews | 71.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | Free | — |
| Size | 209 MB | 111 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sound Health Systems, Inc.](https://appshunter.io/developer/1500011226) | [Double Edge Fitness](https://appshunter.io/developer/1441914980) |

## 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


### Double Edge Fit

[App page](https://appshunter.io/ios/app/double-edge-fit/id6800428975)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Sonu free?

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

### Is Double Edge Fit free?

Double Edge Fit is free to download, with no in-app purchases.

### Which has better reviews, Sonu or Double Edge Fit?

Double Edge Fit is rated higher. Sonu averages 4.4 out of 5 from 232 ratings, while Double Edge Fit averages 5.0 from 2 ratings.

### Do Sonu or Double Edge Fit have ads?

Neither Sonu nor Double Edge Fit shows ads.

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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.*