Comparison

Mindfield eSense vs Calm Now.

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

Head to head
About

Mindfield eSense

This app uses biofeedback sensors to help you measure and manage stress, improve relaxation, and increase self-awareness. It offers real-time feedback through various multimedia options and customizable training programs for daily life, coaching, and research.

Highlights
  • Biofeedback sensors for stress measurement
  • Real-time multimedia feedback
  • Customizable breathing pacer
  • Adjustable training programs
  • Unlimited data archive with export
  • OSC and LSL streaming for researchers
Features
Read full description

The Mindfield eSense App turns your iPhone and iPad, together with the eSense Biofeedback sensors, into a comprehensive solution for stress measurement, relaxation training and self-awareness - in daily life, in training and coaching settings, and in research. **What is Biofeedback?** Biofeedback makes unconscious body signals such as skin conductance, skin temperature, pulse, breathing or muscle tension visible in real time. With targeted training you learn to influence these signals consciously - a scientifically well-documented approach for stress reduction and overall wellbeing. **Five sensors for precise biofeedback:** 1. **eSense Skin Response**: measures skin conductance (EDA, GSR) as a direct stress indicator. 2. **eSense Temperature**: captures skin temperature for effective hand-warming training. 3. **eSense Pulse**: Bluetooth chest strap for accurate heart rate and heart rate variability (HRV) measurement. 4. **eSense Respiration**: breathing-belt add-on for the eSense Skin Response - captures breathing rate, depth and pattern. 5. **eSense Muscle**: measures muscle activity (EMG) for targeted relaxation and activation training. **Comprehensive app features:** - **Customisable breathing pacer** with breathing rate, hold times and resonance breathing - **Multimedia feedback** through video, music, sounds, vibration and Philips Hue Smart Bulbs - **Adjustable training programs (procedures)** for structured multi-step sessions - **Unlimited archive** with ZIP export, CSV/PDF data analysis and per-sensor data wipe for shared devices - **Real-time thresholds** for reactive video feedback (sharpness, brightness, colour) - **14 languages**, continuous updates, intuitive operation **Concrete use cases:** - Stress management and more recovery in everyday life - HRV training and resonance breathing for autonomic balance - Breathing exercises for mindfulness, sports and mental clarity - Hand-warming training to support circulation - Muscle relaxation for desk-bound tension - Focus and performance training **Cloud functions and eSense Web App:** - **Basic Plan**: cloud storage of measurements and access to the eSense Web App (esense.live) - **Premium Plan**: additional cloud storage of procedures, real-time streaming to the Web App and sharing of measurements - **Web App**: simultaneous display of multiple sensors - ideal for group supervision and professional use **OSC and LSL streaming (In-App Purchase, optional):** For researchers and power users: stream your eSense data in real time directly from the app. - **OSC (Open Sound Control)**: to receivers like Max/MSP, Pure Data, TouchDesigner, Processing - **LSL (Lab Streaming Layer)**: to LabRecorder, OpenViBE, MATLAB, BCI2000, pylsl and other LSL-compatible research tools Both protocols are bundled into a single In-App Purchase. **Who is the app for?** - **Individuals** who want to train stress, breathing and relaxation in a focused way - **Trainers and coaches** for structured training sessions, with a multi-user-friendly archive on shared devices - **Researchers and universities** for quantitative data collection with bridges to MATLAB, LabRecorder and custom LSL pipelines **Flexibility and mobility:** - Use at home, in a training or coaching setting, or on the go with iPhone or iPad - Integration into daily life for regular biofeedback training - Free app with continuous updates and fair value for high-precision biofeedback hardware **More information:** - Product overview and tutorials: mindfield-esense.com - Order sensors and accessories: mindfield-shop.com - FAQ & support: help.mindfield.de With precise sensors, a versatile app and cloud functions, biofeedback integrates seamlessly into daily life, training and research.

About

Calm Now.

Features
Read full description

Struggling with daily stress, pre-meeting jitters, or sudden moments of panic? Take back control in 60 seconds. Calm Now is your pocket panic button, a simple and beautiful app that uses the scientifically-proven technique of box breathing to restore your inner peace. WHAT YOU GET FOR FREE - Classic Box Breathing: Master the simple, yet powerful 4-4-4-4 breathing technique, proven to calm your nervous system - Beautiful Visual Guide: Follow our hypnotic, animated breathing circle that makes it easy to find your rhythm - Basic Audio Cues: Simple sounds and a clear default voice to keep you on track - Elegant Dark Theme: A soothing interface that's easy on the eyes, day or night. UNLOCK THE PREMIUM EXPERIENCE: Upgrade to Calm Now Premium to transform your practice and unlock a deeper sense of peace. - Find Your Perfect Guide: Choose from a library of premium voices, including a soothing female calm, a grounding deep male voice, and an ultra-gentle female whisper. - Immerse Yourself in Nature: Drown out the noise with exclusive soundscapes like Ocean Waves, Forest Sounds, Gentle Rain, and White Noise. - Master Advanced Techniques: Explore powerful patterns like the 4-7-8 technique for sleep, Gentle Box for beginners, or Deep Box for advanced relaxation. - Feel Your Breath with Haptics: Engage your sense of touch with gentle vibrations that guide you through each inhale and exhale—perfect for silent practice anywhere. - Unlimited Session Lengths: Practice for as long as you need with sessions from one minute to Infinite Mode. ---- Privacy Policy: https://mateusz0909.github.io/calmnow-lp/privacypolicy/ Terms of Service: https://mateusz0909.github.io/calmnow-lp/termsofservice/

Screenshots

Mindfield eSense4 screens
Calm Now.4 screens

Verdict

The call

The clearest difference is iOS requirement: Mindfield eSense at 15.0 against Calm Now.'s 18.5. On price, 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

Both are free to download. Mindfield eSense sells 19 in-app purchases, starting at $3.99 per month and Calm Now. sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Mindfield eSense ships an update monthly, Calm Now. fortnightly. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

Scorecard1 real difference · 9 level
Mindfield eSense versus Calm Now.: the parameters behind the verdict, then further details
ParameterMindfield eSenseCalm Now.
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews45.0% of reviews—
Number of ratings1 — better—
Update frequencyMonthlyFortnightly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.5
Further details — not scored
Size276 MB52 MB
Age rating4+4+
DeveloperMindfield Biosystems Ltd.Mateusz Byrtus

In-app purchases

19 purchases

Mindfield eSense

Subscriptions11
  • Skin Response, Basic,monatlich$3.991 Month
  • eSense Pulse, Basic, monatlich$3.991 Month
  • Temperature, Basic, monatlich$3.991 Month
Show 8 more
  • SkinResponse,Premium,monatlich$6.491 Month
  • all 4 eSense, Basic, monthly$6.491 Month
  • 4 eSense, Premium, monatlich$8.991 Month
  • Skin Response, Basic, jährlich$38.991 Year
  • Respiration,Basic,jährlich$38.991 Year
  • eSense Muscle, Basic, jährlich$38.991 Year
  • Alle 4 eSense,Basic,jährlich$60.991 Year
  • eSense Pulse,Premium,jährlich$60.991 Year
One-time8
  • additional eSense Videos$3.99
  • additional eSense Music$3.99
  • Frequency-Domain HRV Analysis$9.99
Show 5 more
  • OSC data$9.99
  • esense Hue$9.99
  • eSense Cloud$19.90
  • All purchases$47.99
  • esense Polar$129.00
3 purchases

Calm Now.

Subscriptions2
  • Monthly Premium$3.991 Month
  • Yearly Premium$24.991 Year
One-time1
  • Lifetime Premium$69.99

Questions

Is Mindfield eSense free?
Mindfield eSense is free to download, with in-app purchases available.
Is Calm Now. free?
Calm Now. is free to download, with in-app purchases available.
Do Mindfield eSense or Calm Now. have ads?
Neither Mindfield eSense nor Calm Now. shows ads.
Which is updated more often, Mindfield eSense or Calm Now.?
Mindfield eSense ships an update monthly, and Calm Now. fortnightly. Most recently, Mindfield eSense was updated on October 30, 2026 and Calm Now. on October 25, 2026.

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