# NoStress: HRV Stress Tracker — Calm, Heart Rate & Sleep Sync

> Calm, Heart Rate & Sleep Sync (iPhone/iPad app by Leonid Resenchuk.)

- Source: https://appshunter.io/ios/app/nostress-hrv-stress-tracker/id6756629270 (this page in markdown: same URL + `.md`)
- Developer: [Leonid Resenchuk](https://appshunter.io/developer/1616023236)
- Category: Health & Fitness, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 24 MB
- Languages: American English, French (France), German (Germany), Brazilian Portuguese, European Spanish
- Released: 2026-01-26
- Data updated: 2026-10-24

## What is NoStress?

See stress building up before you feel it. NoStress turns the heart rate variability (HRV) your wearable already records in Apple Health or Google Health into one simple stress level, next to resting heart rate, sleep and blood oxygen.

Glance at your stress on the Apple Watch face, check the daily overview on iPhone, and follow weekly and monthly trends. Wear a Fitbit as well? Its steps, heart rate and sleep merge through Google Health sync without double-counting.

Works with any device: Apple Watch, Fitbit, or anything else that writes to Apple Health or Google Health, such as Oura, Whoop, Garmin or Withings. NoStress reads HRV, heart rate, resting heart rate, sleep and blood oxygen from there.

Monitor your stress levels through heart rate variability (HRV) data from your Apple Watch, Fitbit or any device that syncs to Apple Health. Simple, clean interface for understanding your body's signals.

Features:
* Real-time stress level display
* HRV and data tracking
* Resting heart rate monitoring
* SpO2 tracking
* Sleep duration analysis
* Respiratory rate monitoring
* Step counter
* Historical data charts
* Daily overview dashboard
* Weekly and monthly trends

Important:
This app displays biometric data for informational purposes only. It does not provide medical advice, diagnosis, or treatment recommendations. Always consult healthcare professionals for medical concerns.

NoStress Pro is an auto-renewing subscription: $9.99 per month, or $59.99 per year, each with a 3-day free trial for new subscribers. Payment is charged to your Apple ID account at confirmation of purchase. The subscription automatically renews unless it is turned off at least 24 hours before the end of the current period; your account is charged for renewal within 24 hours prior to the end of the current period. You can manage or cancel your subscription anytime in your Apple ID account settings after purchase.

Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Manage or cancel subscriptions: https://apps.apple.com/account/subscriptions
Terms of Use: https://appstore-metadata.web.app/nostress/terms
Privacy Policy: https://appstore-metadata.web.app/nostress/privacy

Illustrations by Icons8.

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Unlimited Premium Yearly | $59.99 | per year |
| Unlimited Premium | $9.99 | per month |


## Is NoStress safe?

Not enough ratings yet to assess NoStress.

## Is NoStress legit?

NoStress: HRV Stress Tracker appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for NoStress is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 2.4 — 2026-10-21

The button on the notifications intro screen now reads Continue.
The More apps list no longer shows CloudShots.

### 2.3 — 2026-10-12

The stress level on Home, the widget and Apple Watch now shows only from a fresh reading in the last 6 hours. Otherwise it says there is no recent data instead of an old number.
Today's details are now free; past days stay in Pro.
The overnight stress card is no longer locked.

### 2.2 — 2026-10-06

Connect Fitbit through Google Health and see every metric in NoStress.
Sleep redesigned like Apple Health, with day, week, month and 6-month views and a stage timeline.
Cleaner stress and HRV charts.
A new Home Screen widget.
A weekly report and a morning card with your overnight stress.
Faster loading.

### 2.1 — 2026-09-23

Fitbit Air steps, heart rate and sleep now appear when the Google Health app syncs to Apple Health.
Data from two devices, like Apple Watch and Fitbit, is now merged instead of counted twice.
Stability improvements.

### 2.0 — 2026-05-22

Bugfixes and improvements

## Apps similar to NoStress

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Aoryn](https://appshunter.io/ios/app/aoryn/id6770318007) | — | Free | Health & Fitness |
| [Still Here: Grief Journal](https://appshunter.io/ios/app/still-here-grief-journal/id6779709915) | — | Free | Health & Fitness |
| [AI Health Insights: HRV Sleep](https://appshunter.io/ios/app/ai-health-insights-hrv-sleep/id6771649018) | — | Free | Health & Fitness |
| [Nostresso](https://appshunter.io/ios/app/nostresso/id6752930439) | — | Free | Health & Fitness |
| [Kora: Energy & Focus Tracker](https://appshunter.io/ios/app/kora-energy-and-focus-tracker/id6758922286) | — | Free | Health & Fitness |
| [Aera: Sleep & Running Tracker](https://appshunter.io/ios/app/aera-sleep-and-running-tracker/id6762456252) | — | Free | Health & Fitness |

## More apps by Leonid Resenchuk

- [Math Games: 1st Grade AI Tutor](https://appshunter.io/ios/app/math-games-1st-grade-ai-tutor/id6746938495)
- [Currency Converter: Best](https://appshunter.io/ios/app/currency-converter-best/id6755351989)
- [Pixero: Blur, Redact, Erase BG](https://appshunter.io/ios/app/pixero-blur-redact-erase-bg/id6770034829)
- [CloudShots: Screenshot History](https://appshunter.io/ios/app/cloudshots-screenshot-history/id6776119510)
- [PDF Scanner & OCR: DocuClean](https://appshunter.io/ios/app/pdf-scanner-and-ocr-docuclean/id6815216632)

All apps by Leonid Resenchuk: https://appshunter.io/developer/1616023236

## Related topics

[nostress](https://appshunter.io/ios/topics/nostress) · [stress tracker for apple watch](https://appshunter.io/ios/topics/stress-tracker-for-apple-watch)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-24.*