Comparison

Callibri Biofeedback vs Focus 'n Flow

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

Head to head
About

Callibri Biofeedback

This system uses a sensor to measure muscle tone and visualizes your muscle activity in a game-like interface. It's designed for self-regulation training to improve muscle strength and bodily functions.

Highlights
  • Muscle tone evaluation (EMG signal)
  • Visualizes muscle activity in games
  • Muscle restoration for stroke/CP
  • Home fitness muscle strengthening
  • Increases physiological reserves
Features
Read full description

The "Callibri Biofeedback" system is designed for self-regulation training sets prepared by specialists with a goal of being able to manipulate the body's systems at will. The application works with "Callibri" sensor that instantly evaluates muscle tone level (the EMG signal) and the app visualizes muscle activity in the form of a game situation. The Callibri Biofeedback system is used for: • restoration of weakened muscles in stroke and cerebral palsy; • training, increasing the strength and functionality of muscles in the field of home fitness; • increasing and maintaining the physiological reserves of the body.

About

Focus 'n Flow

Features
Read full description

Welcome to Focus 'n Flow, your go-to Wellness App for mastering Focus Power. This innovative app combines education and entertainment to activate and sustain your attention in a fun, engaging way. Through systematic brain training and game-like exercises, Focus 'n Flow guides you towards a more relaxed and focused mental state. Immerse yourself in our multimedia, entertaining feedback system, and learn to enhance your attention while having a blast. BrainTrain's healthy lifestyle apps are available for personal use. Focus 'n Flow is not intended to be a substitute for consultation with a healthcare provider or for medical treatment of any emotional or psychological problem. Transform Your Focus in Just Minutes a Day: * Learn to Identify and Overcome Distractions: Our adaptive training automatically adjusts to your learning pace, making it easier to boost your brain power and achieve your goals. * Engage and Enjoy: Dive into vibrant, multi-sensory tasks filled with rich graphics, multi-modal feedback, and captivating music. Not just beneficial, these exercises are pure joy, offering immediate feedback and scores to keep you motivated. * Relaxation Techniques: Master the art of relaxation with just three Conscious Breaths, and release tension through special exercises. Becoming mindful of your body's tension helps you live more thoughtfully and stress-free. * Empowerment and Confidence: Discover the power of focused attention and its impact on your personal and professional life. Enhance your presence and confidence, tackling life's challenges with ease. * Mindful Awareness: Commit to enhancing your Focus Power and enjoy the profound benefits of being present. Learn to navigate away from negative thoughts and embrace a mindful state of being. * Track Your Journey: Monitor your progress effortlessly and learn to enter the "focus flow state" with ease. Our app turns learning into an exciting game, offering continuous feedback and detailed progress charts. * Learn at Your Pace: Just 20 minutes a day, a few times a week, can significantly improve your focus. Discover the ease of maintaining a positive and productive mindset in less than 30 days. Commitment is Your Path to Success. Regular engagement with Focus 'n Flow is essential for unlocking the full potential of your Focus Power. Experience the daily benefits of a sharp, attentive mind, transforming your inner life and fostering peace of mind. Start Your Focus Journey Today! Dive into the world of Focus 'n Flow and embark on a delightful path of self-improvement. Unleash your focus power and enjoy the lasting rewards of a concentrated, attentive mind. Join us now and transform your focus in ways you never imagined possible! Subscription • Only for users who were not set up by a trainer. • 1 Month Subscription that allows you to run training. • Unlimited cloud storage. Terms Of Use • Standard Apple EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Callibri Biofeedback4 screens
Focus 'n Flow4 screens

Verdict

The call

The clearest difference is in-app purchases: Callibri Biofeedback at none against Focus 'n Flow's 1. Focus 'n Flow's advantage is update cadence (weekly vs every 4 months) and device support (3 vs 1). On price, ads and iOS requirement 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

Both are free to download. Focus 'n Flow sells 1 in-app purchase, starting at $99.99 per month. Callibri Biofeedback asks for nothing beyond the download.

UpkeepUpdate frequency

Callibri Biofeedback ships an update every 4 months, Focus 'n Flow weekly. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 6 level
Callibri Biofeedback versus Focus 'n Flow: the parameters behind the verdict, then further details
ParameterCallibri BiofeedbackFocus 'n Flow
PriceFreeFree
Rating3.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 4 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.015.0 — better
Further details — not scored
Size269 MB459 MB
Age rating12+4+
DeveloperBRAINBIT INC.BrainTrain Inc.

In-app purchases

None

Callibri Biofeedback

No in-app purchases

1 purchases

Focus 'n Flow

Subscriptions1
  • 1 Month of Cloud And Guidance14 Days trial$99.991 Month

Questions

Is Callibri Biofeedback free?
Callibri Biofeedback is free to download, with no in-app purchases.
Is Focus 'n Flow free?
Focus 'n Flow is free to download, with in-app purchases available.
Do Callibri Biofeedback or Focus 'n Flow have ads?
Neither Callibri Biofeedback nor Focus 'n Flow shows ads.
Which is updated more often, Callibri Biofeedback or Focus 'n Flow?
Callibri Biofeedback ships an update every 4 months, and Focus 'n Flow weekly. Most recently, Callibri Biofeedback was updated on November 3, 2026 and Focus 'n Flow on October 28, 2026.

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