CALM! Downloads & RevenueCALM! - Daily Meditation · App Store
Not in any tracked top chart right now.
Updated 4 Nov 2026 · rankings refresh through the day
DeveloperTNQ Tech, Co.
CategoryHealth & Fitness
PriceFree
Released
Rating★ 5.0 (3)
Version1.0.2
Age rating4+
First seen by us
13 Oct 2026
13 Oct 2026CALM! - Daily Meditation update history & changes
Last change · 3 events since 23 Aug 2025Full timeline ↓Full timeline · 2 events in the last 12 months
- 🆕CALM! - Daily Meditation first spotted by AppInsiderJapan (found via developer)
- 🆕CALM! - Daily Meditation released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
5.0 ★
3 ratings
Measured
CALM! - Daily Meditation on the App Store
App details
App ID
6749538930
Publisher
TNQ Tech, Co.
On the store since
Aug 2025
1 year on the store
Minimum OS
iOS 12.0+
iPhone 5s and later
Devices
iPhone · iPad
Content rating
4+
Languages
2
EN JA
Size
412 MB
Also listed in
Lifestyle
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
5.0 ★
3 ratings
Measured
Ratings
3
Measured
About CALM! - Daily Meditation
CALM! is a mindfulness app that supports self-care based on heart rate variability (HRV).
By placing your finger on the smartphone camera for 30 seconds, the app estimates heart rate variability (HRV) from optical pulse signals.
HRV has been internationally studied in relation to stress and relaxation, and CALM! provides this estimated value as reference information to support daily self-care and mindfulness practice.
Depending on your condition, the app suggests techniques such as bilateral stimulation and box breathing.
You can also choose from multiple frequencies and environmental sounds tailored to your needs—whether you want to relax, focus, or fall asleep. Combined with daily mood logging, CALM! helps you find the best condition for your well-being.
Features
•Reference display of autonomic nervous system state based on HRV analysis
•Mindfulness sessions using bilateral stimulation
•Box breathing and relaxation sound guidance
•Mood tracking and history review
Subscription
•$1.99per month (with a 3-day free trial)
•Premium subscription unlocks the following features:
・Detailed analysis reports
・Storage and comparison of measurement history
・Access to all mindfulness sessions, breathing methods, and sound content
•Cancel anytime
- Supported Environment
This app is only compatible with devices equipped with a flash and running iOS 14 or later.
Please note that operation on iPads or iPhones that do not meet the above requirements is not covered by support.
Disclaimer
•This app provides reference information based on HRV analysis and is not a medical device intended for diagnosis, treatment, or prevention of disease.
•Please consult a healthcare professional when medical judgment or treatment is required.
References
•Selvaraj N, et al. Validation of Smartphone PPG for HRV Measurement. Frontiers in Digital Health. 2024.
•Task Force of the European Society of Cardiology and the North American Society of Pacing and Electrophysiology. Heart Rate Variability: Standards of Measurement, Physiological Interpretation and Clinical Use. Circulation. 1996.
Terms of Use: https://tnq-tech.web.app/term_of_use
By placing your finger on the smartphone camera for 30 seconds, the app estimates heart rate variability (HRV) from optical pulse signals.
HRV has been internationally studied in relation to stress and relaxation, and CALM! provides this estimated value as reference information to support daily self-care and mindfulness practice.
Depending on your condition, the app suggests techniques such as bilateral stimulation and box breathing.
You can also choose from multiple frequencies and environmental sounds tailored to your needs—whether you want to relax, focus, or fall asleep. Combined with daily mood logging, CALM! helps you find the best condition for your well-being.
Features
•Reference display of autonomic nervous system state based on HRV analysis
•Mindfulness sessions using bilateral stimulation
•Box breathing and relaxation sound guidance
•Mood tracking and history review
Subscription
•$1.99per month (with a 3-day free trial)
•Premium subscription unlocks the following features:
・Detailed analysis reports
・Storage and comparison of measurement history
・Access to all mindfulness sessions, breathing methods, and sound content
•Cancel anytime
- Supported Environment
This app is only compatible with devices equipped with a flash and running iOS 14 or later.
Please note that operation on iPads or iPhones that do not meet the above requirements is not covered by support.
Disclaimer
•This app provides reference information based on HRV analysis and is not a medical device intended for diagnosis, treatment, or prevention of disease.
•Please consult a healthcare professional when medical judgment or treatment is required.
References
•Selvaraj N, et al. Validation of Smartphone PPG for HRV Measurement. Frontiers in Digital Health. 2024.
•Task Force of the European Society of Cardiology and the North American Society of Pacing and Electrophysiology. Heart Rate Variability: Standards of Measurement, Physiological Interpretation and Clinical Use. Circulation. 1996.
Terms of Use: https://tnq-tech.web.app/term_of_use
Latest updates
1.0.2
Minor Fixes
