# Resona: Resonance Breathing — HRV Biofeedback, stress Relief > HRV Biofeedback, stress Relief (iPhone/iPad app by Frederik Flohr Larsen.) - Source: https://appshunter.io/ios/app/resona-resonance-breathing/id6789603808 (this page in markdown: same URL + `.md`) - Developer: [Frederik Flohr Larsen](https://appshunter.io/developer/6789603810) - Category: Health & Fitness - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 17.0 · 6 MB - Languages: American English, Danish - Released: 2026-09-27 - Data updated: 2026-10-24 ## What is Resona? Train for better HRV with breathing that adapts to your physiology. Most breathing exercises use the same pace for everyone. Resona does something different. Using live beat-to-beat heart data from a compatible Bluetooth heart rate monitor, Resona explores how your body responds to different breathing rhythms. It learns which rhythm produces your strongest and most stable response, then uses that insight to personalize future sessions. The goal is simple: to help you build a breathing practice that can support higher HRV, a calmer response to stress and better recovery. PERSONALIZED TO YOUR PHYSIOLOGY Your ideal breathing rhythm is personal. During measured sessions, Resona gradually tests and refines the pace that works best for your body. As your rhythm becomes clearer, your sessions become more individually tailored. MEASURE YOUR RESPONSE Resona turns breathing practice into something you can follow over time. See how your body responded during each measured session and explore changes in your: • Personal breathing rhythm • Resona Score • Time to calm • Resonance stability • Perceived effect • Practice consistency Once Resona has learned your rhythm, you can also continue guided sessions without wearing your heart rate monitor. WITH RESONA, YOU CAN: • Discover and train your personal breathing rhythm • Practice with adaptive sessions guided by your physiology • Support your HRV through personalized resonance breathing • Follow your response and development over time • Build a more consistent breathing practice • Continue guided sessions without a heart rate monitor • Keep your measurements and history on your own iPhone HEART RATE MONITOR REQUIRED A compatible Bluetooth heart rate monitor capable of transmitting beat-to-beat data is required for measured sessions. PRIVATE BY DESIGN Resona requires no account and uses no advertising, tracking or third-party analytics. Your measurements, history and settings remain stored locally on your iPhone. SUBSCRIPTION A subscription is required to start new sessions. Your existing history, results and settings remain accessible without an active subscription. Subscription details, including the current price and any available introductory offer, are shown before purchase. GENERAL WELLNESS Resona is intended for general wellness, relaxation and breathing practice. Individual responses may vary. Resona is not a medical device and is not intended to diagnose, treat, cure or prevent any medical condition. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Resona | $4.99 | per month | | Resona yearly | $34.99 | per year | ## Is Resona safe? Not enough ratings yet to assess Resona. ## Is Resona legit? Resona: Resonance Breathing has limited verification signals. The AppsHunter Legitimacy Score for Resona is 58 out of 100 points across 7 verification signals from App Store and developer data. ## Version history (last 5 releases) ### 1.3 — 2026-10-24 Welcome to a calmer start. • New onboarding: a first breath together with the app, a short introduction, and help connecting your heart rate sensor. • Your first measured session is included: start it right from onboarding, with a short guide on how to breathe. • Clearer explanations: every ⓘ text has been rewritten to say first what you see, then how to use it. • A calmer heart rate trend on the results page. • Small improvements and fixes. ### 1.2.1 — 2026-10-22 Explore your practice over time. • View your weekly practice time and completed sessions. • Track your current and longest streak. • Open Your practice from Home or History. • Enjoy refreshed charts throughout History. ### 1.2 — 2026-10-15 Build your daily breathing habit. • Track your streak and see your completed days at a glance. • Reach new milestones and celebrate a full week of practice. • Improvements to adaptive rhythm learning and reliability. ### 1.1.1 — 2026-10-13 More insight into your breathing sessions. • Explore detailed session data, including your heart-rate curve, pulse trend, HRV measurements and guided rhythm changes. • A simpler session ending with a check-in and clearer rhythm comparisons. • New onboarding guidance on how to breathe gently and comfortably. • Optional usage statistics to help improve Resona. Sharing is off until you choose to enable it and can be changed in Settings → Privacy. Your physiological measurements and personal session results stay on your iPhone. ### 1.1 — 2026-10-04 Resona 1.1 makes measured sessions more reliable and easier to understand. • Clearer sensor connection and readiness before a session • Better guidance when beat-to-beat data is missing • More transparent post-session explanations • Monthly and yearly subscription options • Improved accessibility, diagnostics and overall polish ## Apps similar to Resona | App | Rating | Price | Category | | --- | --- | --- | --- | | [Resonance: Breath & Calm](https://appshunter.io/ios/app/resonance-breath-and-calm/id6792345187) | — | Free | Health & Fitness | | [LUMÉ GYM](https://appshunter.io/ios/app/lume-gym/id6758963210) | — | Free | Health & Fitness | | [Plugin Heat Club Copenhagen](https://appshunter.io/ios/app/plugin-heat-club-copenhagen/id6805156045) | — | Free | Health & Fitness | | [Vesterbronx Gym](https://appshunter.io/ios/app/vesterbronx-gym/id6664068088) | — | Free | Health & Fitness | | [Ohm Yoga](https://appshunter.io/ios/app/ohm-yoga/id1599242877) | — | Free | Health & Fitness | | [Rules Boxing Club - BB](https://appshunter.io/ios/app/rules-boxing-club-bb/id6503434321) | — | Free | Health & Fitness | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-24.*