Comparison

iAwake® Technologies vs HRV4Biofeedback

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

iAwake® Technologies

Enhance focus, relaxation, creativity, and meditation with innovative sound tools. This app uses brainwave entrainment technology to guide your mind into desired states, making it easier to access them repeatedly.

Highlights
  • Brainwave entrainment technology
  • Focus and flow enhancement
  • Deep relaxation and stillness
  • Creativity and healing sounds
  • Multi-layered sound entrainment strategies
  • Neuroplasticity support
Features
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Innovative sound-based tools to power your focus & flow, deep relaxation, creativity, profound meditation, and healing. Imagine using the power of resonance to set your mood and dial the brainwave states you want. Think joy, total relaxation, deep stillness, high focus, out-of-the-box creativity, rest...delivered through a pair of headphones and this app. Welcome to iAwake®. HOW DOES THE TECH WORK? As you read this text, billions of brain cells are generating measurable electrical activity across your brain. Extensive scientific research has revealed how all our mind states (relaxation, focus, anxiety, sleep, meditation...) correspond to specific brainwave patterns. All the feelings, thoughts, and actions we engage in on a daily basis are somehow electro-chemically rooted in neuron-to-neuron communication and so reflected in our ever-changing brainwave states. Due to the tendency of our brains to synchronize with external stimuli, it is possible to use sound to influence the amplitude of our various brainwave frequencies. For example, as you listen to an alpha brainwave track, certain areas of your brain want to quite literally follow the rhythm and get synchronized to the speed of alpha waves. When that happens, you might feel the calm and open focus that is associated with alpha rhythms. Thanks to neuroplasticity (the brain's endless and amazing capacity to change, adapt, and reorganize itself), the more frequently you enter a state, the easier you are able to go back to it. Brainwave entrainment lets your brain calm down or speed up, depending on your needs. THE IAWAKE® DIFFERENCE iAwake's sound entrainment envelops brainwave activity, strategically guiding it toward transformative states of consciousness. Rather than embedding simple binaural frequencies into a nature soundtrack, the iAwake’s approach influences neurological activity through a multi-layered approach that synergizes numerous brainwave entrainment strategies. These may include: binaural, isochronic, monaural beats, as well as psychoacoustic (using music itself as part of entrainment process), panning from side to side (to facilitate releasing of stress), exhaustive binaural encoding, dual pulse binaural signals, harmonic layering, carrier frequency therapy, and much more. iAwake® integrates science AND art in the creation of its unique, powerful yet kind, and beautiful soundscapes. CONNECT WITH US Website: http://www.iawaketechnologies.com/ Facebook Page: https://www.facebook.com/ProfoundMeditationProgram/ Facebook Practitioners Group: https://www.facebook.com/groups/profoundmeditation/ Youtube: http://www.youtube.com/c/iAwakeTechnologies Twitter: https://twitter.com/TeamIawake iAWAKE® PRICING & TERMS The iAwake® App is free, with a selection of free brainwave entrainment tracks. The full iAwake® library is accessible through product purchases via the iAwake® Technologies website, but accessed in the app with just your email address. Read more about our terms of use here - http://www.iawaketechnologies.com/terms-of-service/ Read more about our privacy policy here - http://www.iawaketechnologies.com/privacy-policy/

About

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.

Highlights
  • Camera-based HRV measurement
  • Real-time heart rate feedback
  • Resonant frequency analysis
  • Biofeedback score
  • Subjective annotations
  • HealthKit integration
  • Bluetooth sensor support
Features
Currently charting
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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

Screenshots

iAwake® Technologies4 screens
HRV4Biofeedback4 screens

Verdict

The call

The clearest difference is price: iAwake® Technologies at Free against HRV4Biofeedback's $9.99. iAwake® Technologies also leads on rating (4.6 vs 3.4) and review sentiment (80% vs 53%). HRV4Biofeedback's advantage is chart position (#98 vs unranked). On ratings volume, 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

CostPrice · In-app purchases · Ads · Monetization

iAwake® Technologies is free to download; HRV4Biofeedback costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

iAwake® Technologies holds the better App Store score, 4.6 against 3.4. Both are backed by a comparable volume of ratings — 27 and 29 respectively. Written reviews point the same way: 80% of iAwake® Technologies's written reviews are positive against 53% of HRV4Biofeedback's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on August 23, 2026 and September 25, 2026 respectively.

Scorecard6 real differences · 5 level
iAwake® Technologies versus HRV4Biofeedback: the parameters behind the verdict, then further details
ParameteriAwake® TechnologiesHRV4Biofeedback
PriceFree — better$9.99
Rating4.6 (27 ratings) — better3.4 (29 ratings)
Positive reviews80.0% of reviews — better53.1% of reviews
Number of ratings2729 — better
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree with in-app purchasesFree — better
Best chart rank—#98 — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.4 — better15.6
Further details — not scored
Size21 MB138 MB
Age rating4+4+
DeveloperiAwake Technologies, LLCA.S.M.A. B.V.

Customer experience

iAwake® Technologies

All ratings27 ratings
Positive88.9%
Neutral3.7%
Negative7.4%
Written reviews20 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

HRV4Biofeedback

All ratings29 ratings
Positive51.7%
Neutral20.7%
Negative27.6%
Written reviews32 reviews
Positive53.1%
Neutral15.6%
Negative31.3%

In-app purchases

None

iAwake® Technologies

No in-app purchases

None

HRV4Biofeedback

No in-app purchases

Questions

Is iAwake® Technologies free?
iAwake® Technologies is free to download, with no in-app purchases.
Is HRV4Biofeedback free?
HRV4Biofeedback costs $9.99, with no in-app purchases.
Which has better reviews, iAwake® Technologies or HRV4Biofeedback?
iAwake® Technologies is rated higher. iAwake® Technologies averages 4.6 out of 5 from 27 ratings, while HRV4Biofeedback averages 3.4 from 29 ratings.
Do iAwake® Technologies or HRV4Biofeedback have ads?
Neither iAwake® Technologies nor HRV4Biofeedback shows ads.
Which is updated more often, iAwake® Technologies or HRV4Biofeedback?
iAwake® Technologies ships an update every 2 months, and HRV4Biofeedback every 2 months. Most recently, iAwake® Technologies was updated on August 23, 2026 and HRV4Biofeedback on September 25, 2026.

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