Sonu vs Breth.
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sonu
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.
- Personalized acoustic resonance therapy
- Drug-free treatment
- AI-enhanced facial scanning
- Bluetooth connectivity
- Treatment session tracking
- Micro vibration options
Read full descriptionHide full description
SONU provides personalized, drug free, acoustic resonance therapy to treat nasal congestion symptoms caused by allergic and non-allergic rhinitis. SONU is backed by FDA authorization, extensive clinical trials, and enhanced by AI. SONU works with iPhone X or later models and uses Bluetooth to connect with your iPhone. To get started simply download the app and follow the on-screen instructions to get to your 15 minute treatment session. You can choose to relax with the gentle micro vibrations or go about your daily activities. The SONU app takes a scan of your face using the front facing camera and personalizes the acoustic therapy based on your facial anatomy and other proprietary factors. The acoustic resonance is delivered via medical grade bone conduction transducers in the SONU band (a lightweight, wearable headband purchased separately). SONU is proven to be safe and effective and also has a history of your treatment sessions in the app so you can track your usage over time. Medical Disclaimer: This app does not replace or provide medical advice and diagnosis. Always seek the advice of a physician or other qualified health provider with any questions you may have regarding a medical condition. Regulatory Jurisdiction: The SONU band is authorized for use by regulatory authorities only in the USA (FDA) and Singapore (HSA). Any feedback? Contact us at https://soundhealth.life/contact/ Additional information including the privacy policy, biometric notice and terms of use can be found at https://soundhealth.life
Breth.
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.
- 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
Read full descriptionHide full description
Reset with breth Placed on your chest or held in your hand, breth's haptic vibrations are synchronized with sounds and visuals from your iOS device for an incredibly immersive experience. Improve focus, reduce stress, and activate your body's reset button in the time available to you - in as little as 3 minutes. Breth provides sensory-rich breathwork exercises and energizing haptic experiences. Designed for all experience levels, breth empowers you to master your breathing while honing your mental clarity so you can own your daily pressures. Why Breathwork? Breathwork is a proven method to lower your stress levels naturally without medication, sharpen your mental clarity, reduce stress and experience deeper, more restful sleep. But many people don't know how to do it, forget to practice, or find it aimless. Breth changes all that by making it simple, intuitive and joyful to incorporate breathwork into your daily self-care routine. Breth is your partner in building a healthier, more focused, and less stressed you. Key Features: • Personalized Breathwork – Breth measures your breathing capabilities and makes a recommendation for your breathing pace (how long you should inhale, exhale and hold your breath during exercises such as box breathing, triple breathing, belly breathing, triangle breathing, double exhaling and 234 breathing). • Haptic Vibrations – Breth's vibrations offer a unique and amazing feeling. Inhales are felt at the top of the device, while exhales are felt at the bottom for an intuitive experience. So even with your eyes closed, you’ll be able to follow along to the patterns of the breathing exercises. • Synchronized sessions - 2 breth devices connect to 1 iOS device for shared sessions. This feature is selectable with all breathing exercises and experiences. • Offline mode - Breth’s offline mode lets you load your favorite activity onto your breth device and start a haptic session without needing to be connected to your phone. • Customize your Sessions – Whether you're within exercise or experience mode, Breth provides customization in vibration intensity, duration, and type, ensuring simplicity and versatility. • Anytime, Anywhere – Whether you're at home, in the office, or on the go, Breth’s portability helps you find moments of peace and clarity whenever you need them most. You'll look forward to your 5 or 10 minute breth sessions as you become the focused, de-stressed version of yourself you know you can be. • USB-C Charging – The USB-C charging port does double-duty. Plug in your Breth device when it needs a charge or connect the optional necklace attachment to the USB-C port for a worn option.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Sonu | Breth. |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (227 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 74.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 227 — better | 1 |
| Update frequency | Every 3 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 191 MB | 228 MB |
| Age rating | 4+ | 4+ |
| Developer | Sound Health Systems, Inc. | True Angle Medical Technologies Inc. |
Customer experience
Sonu
Breth.
Bugs and requests
Sonu
Reported bugs
6 issues- Infinite login loop
- App locks after session end
- Bluetooth connection issues
- Offline mode non-functional
- Cannot end session
Show 1 moreShow fewer
- Server maintenance prevents app use
Requested features
11 requests- Bring back old features
- Provide battery life indicator
- Add warning for high audio
- Restore alignment check
- Allow disconnection from band
Show 6 moreShow fewer
- Provide feedback on band connection status
- Improve SONUcast loading time
- Allow users to remove mediation sounds
- Improve offline mode functionality
- Add real number scales to data graphs
- Enable Bluetooth connection to two devices simultaneously
Breth.
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Sonu
No in-app purchases
Breth.
No in-app purchases









