HRV4Biofeedback vs Quotusphere
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
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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
Quotusphere
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Discover Quotusphere—your daily source of inspiration! Are you ready to start your day with positive thoughts? With Quotusphere, you'll receive a new, inspiring quote every day that will motivate you and make you think. Whether you're looking for wisdom, motivation, or just a little ray of sunshine in your everyday life, Quotusphere has something for everyone! - Daily quotes: Receive a new quote every day that will make you think and inspire you. - Widget function: Keep your favorite quotes in view – right on your home screen. You can also display multiple widgets in different languages at the same time. - Quote list: Browse an extensive list of all quotes already created and find your favorites. - Favorites: Mark your favorite quotes and quickly access them later. - Notes: Add personal notes to your quotes to record your thoughts. - Search function: Filter by favorites or search for specific content in quotes and notes. - Share quotes with your friends in their language. Download Quotusphere today and be inspired by the power of words. Make every day a special day! Privacy Policy: https://quotusphere.app/privacy-policy.html Terms of Use: https://quotusphere.app/terms-of-use.html
Screenshots
Verdict
The clearest difference is price: Quotusphere at Free against HRV4Biofeedback's $9.99. HRV4Biofeedback's advantage is in-app purchases (none vs 2) and chart position (#37 vs unranked). On update cadence, 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
Quotusphere is free to download; HRV4Biofeedback costs $9.99 up front. Quotusphere sells 2 in-app purchases, starting at $0.99 per 3 months. HRV4Biofeedback asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 17, 2026 and October 7, 2026 respectively.
| Parameter | HRV4Biofeedback | Quotusphere |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 3.4 (29 ratings) — better | — |
| Positive reviews | 53.1% of reviews | — |
| Number of ratings | 29 — better | — |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Best chart rank | #37 — better | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 138 MB | 21 MB |
| Age rating | 4+ | 17+ |
| Developer | A.S.M.A. B.V. | 22of8 GmbH |
In-app purchases
HRV4Biofeedback
No in-app purchases
Quotusphere
- Premium 3 Months$0.993 Months
- Premium 1 Year$2.991 Year









