HRV4Biofeedback vs Surreally
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HRV4Biofeedback
This app uses your phone's camera to measure heart rate variability and provide biofeedback. It guides you through deep breathing exercises to improve self-regulation and manage stress. Track your progress and explore correlations with your daily experiences.
- Camera-based HRV measurement
- Real-time heart rate feedback
- Resonant frequency analysis
- Biofeedback score
- Subjective annotations
- HealthKit integration
- Bluetooth sensor support
Read full descriptionHide full description
Improve self-regulation and better cope with stress using HRV4Biofeedback, the camera-based Heart Rate Variability (HRV) Biofeedback app APP FEATURES: > camera-based biofeedback measurement showing real-time heart rate > spot check measurements at rest > frequency power spectrum > biofeedback score to quantify the effectiveness of the practice in terms of deep breathing and duration > resonant frequency analysis to determine the optimal breathing rate for your sessions > semi-real time HRV analysis > alternative manual breathing rate configuration between 4.5 and 8.5 breaths / minute > subjective annotations, including up to 5 personalized questions > current streak > explore correlations between subjective annotations and biofeedback data > Integration with HealthKit (you can write heart rate, HRV and Mindful minutes) > weekly and monthly summaries > support for Bluetooth sensors > background nature sounds > vibration to guide you through the practice WHAT'S BIOFEEDBACK? Heart Rate Variability (HRV) Biofeedback is a technique that can directly affect physiological and psychological factors through deep breathing exercises and is an ideal strategy to help us self-regulate and better cope with stressful situations Practically speaking, HRV Biofeedback consists of providing an individual with real-time feedback on instantaneous heart rate and respiration changes while being instructed to breathe at low frequencies You can learn more about the psychological and physiological benefits of deep breathing and HRV Biofeedback, at HRV4Biofeedback.com HOW CAN I BENEFIT FROM BIOFEEDBACK? Life can be demanding, from both a physical and psychological point of view Our health and performance can be affected by how we are able to effectively cope with stressful situations and deal with anxiety, or in broader terms, our ability to emotionally self-regulate is key The goal of HRV Biofeedback is to improve self-regulation, therefore impacting positively our health and performance LEARN MORE: - App features: https://www.hrv4biofeedback.com/faq.html - An introduction to biofeedback: https://www.hrv4biofeedback.com/blog/a-primer-on-heart-rate-variability-biofeedback - How to use the camera measurement: https://www.hrv4biofeedback.com/blog/guidelines-and-best-practices-for-camera-based-measurements Supported devices for the camera measurement: iPhones 8 and onwards HRV4Biofeedback requires to register an account with your email address, so that your data can be backed up safely and retrieved in case anything happens (app issue, changing phone, etc.) The validation of the camera-based heart rate measurement is available here: https://www.researchgate.net/publication/315059917_Comparison_of_Heart_Rate_Variability_Recording_With_Smart_Phone_Photoplethysmographic_Polar_H7_Chest_Strap_and_Electrocardiogram_Methods
Surreally
Read full descriptionHide full description
Surreally is the world’s first hypnosis app tailored for entrepreneurs, founders, and creators. Surreally helps you work through the fears, beliefs, and unconscious self-sabotage patterns that keep you stuck. Maybe you’re overthinking every decision, struggling with imposter syndrome, procrastination, overwhelm, afraid to put yourself out there, or working harder than ever but feeling emptier and burning out. Sometimes the problem isn’t a lack of strategy, motivation, or discipline. It’s the unconscious patterns you’ve been carrying for years. Surreally brings together guided and personalised hypnosis and breathwork practices to help you explore those patterns, work through what’s holding you back, so you can create your life & business with more flow, alignment & fulfilment. Overcome what’s holding you back and become the best version of yourself. MEET YOUR HYPNOTIST Hi, I’m Ginny Wan, founder of Surreally and a serial entrepreneur. I’ve worked and taught over 4,300 founders and creators, built seven businesses, and burned out running a six-figure marketing agency by the age of 26. Through hypnosis, I realised I’d created my own growth ceiling in my business, building it around an old pattern of people-pleasing. I was overdelivering, underpricing, and making myself indispensable. Once I understood that in trance, I changed my business model, doubled my revenue, and worked five times less. That experience led me to train with leading hypnotherapists to learn how the unconscious works, how to change our limiting beliefs and habits to break through old patterns that no longer serve us. I created Surreally because I know what it’s like to have the ambition, ideas, and skills, yet still feel like something inside you is holding you back. Sometimes you don’t need another strategy. You need to understand why you keep getting in your own way and change your unconscious scripts, so I built Surreally to help fellow entrepreneurs live consciously and build their businesses from love rather than from pain. YOUR JOURNEY, YOUR PACE Explore 1-day, 7-day, 14-day, or 21-day challenges, with guided sessions, daily check-ins, and practical steps to help you make meaningful changes. Self-Realisation: Stop getting in your own way. Understand your self-sabotage and start making different choices. Clarity: Feeling overwhelmed? Clear your head and find your next step. Peace: Tired of overthinking? Quiet the mental noise and trust your decisions. Flow: Feeling burned out? Find a healthier balance between work, creativity, and rest. Magnetic: Afraid of being seen? Work through the fear of judgment and share your work with confidence. Momentum: Keep putting things off? Move past procrastination and perfectionism and start following through. Quantum: Meet your future self. Explore who you want to become and start bringing those qualities into your life. Calm: Struggling to switch off? Release tension and feel more grounded. Self-Acceptance: Nothing feels good enough? Quiet your inner critic and build a kinder relationship with yourself. Presence: Can’t stop scrolling? Reclaim your attention and make room for what matters. Abundance: Feel like there’s never enough? Explore your money beliefs and open yourself to new possibilities. Surreal: Curious about altered states? Explore immersive breathwork through seven energy centres. AWAKEN THE WISDOM WITHIN Sometimes the most meaningful changes begin when you slow down, understand yourself, and start responding differently. Surreally creates space to explore who you are, what holds you back, and who you want to become. Awaken your potential. Change from within. MEMBERSHIP Your first week is free. It renews automatically at the end of each period until you cancel in your Apple ID settings. Surreally is a self-development and wellness app, not a medical device or substitute for professional medical or mental health care. Individual results may vary.
Screenshots
Verdict
The clearest difference is price: Surreally at Free against HRV4Biofeedback's $9.99. HRV4Biofeedback's advantage is in-app purchases (none vs 3) and update cadence (every 2 months vs every 5 months). On ads and device support 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
Surreally is free to download; HRV4Biofeedback costs $9.99 up front. Surreally sells 3 in-app purchases, starting at $99.00 per month. HRV4Biofeedback asks for nothing beyond the download.
HRV4Biofeedback ships an update every 2 months, Surreally every 5 months. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | HRV4Biofeedback | Surreally |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 3.4 (30 ratings) — better | — |
| Positive reviews | 53.1% of reviews | — |
| Number of ratings | 30 — better | — |
| Update frequency | Every 2 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 138 MB | 31 MB |
| Age rating | 4+ | 17+ |
| Developer | A.S.M.A. B.V. | Surreal Digital Academy |
In-app purchases
HRV4Biofeedback
No in-app purchases
Surreally
- Monthly membership7 Days trial$99.001 Month
- Quarterly membership7 Days trial$299.993 Months
- Yearly membership7 Days trial$899.001 Year









