# Pulse Monitor: No Subs Apps — Heart Rate, RMSSD, SDNN, Pnn50

> Heart Rate, RMSSD, SDNN, Pnn50 (iPhone/iPad app by Xeniya Bykhova.)

- Source: https://appshunter.io/ios/app/pulse-monitor-no-subs-apps/id6758912226 (this page in markdown: same URL + `.md`)
- Developer: [Xeniya Bykhova](https://appshunter.io/developer/1787778807)
- Category: Health & Fitness, Medical
- Price: Free
- Age rating: 4+
- Requires: iOS 17.6 · 4 MB
- Languages: English, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Portuguese, Russian and 5 more
- Released: 2026-02-18
- Data updated: 2026-07-09
- User reviews in markdown: https://appshunter.io/ios/app/pulse-monitor-no-subs-apps/id6758912226/reviews.md

## What is Pulse Monitor?

Pulse Monitor is a transparent, science-minded app for pulse, HRV, breathing, and recovery tracking using only your iPhone sensors.

Built for people who want useful physiology trends without hype:
- Free app
- No subscriptions
- No ads
- No account
- No health-data collection
- No cloud dependency for measurements

PULSE & HRV (camera PPG)
From fingertip camera signal, Pulse Monitor estimates:
- Pulse (BPM)
- AVNN, CVNN
- RMSSD, SDNN, SDSD
- NN20, pNN20, pNN50
- TRP (irregularity index), SampEn, Shannon Entropy
- SD1/SD2 ratio, Poincare area
- HF, LF, VLF, Total Power, LF/HF
- Baevsky Stress Index

BREATHING (motion sensors)
From phone motion on the abdomen, Pulse Monitor estimates:
- Respiratory rate
- Mean breath interval
- Breath-interval SD
- Breath RMSSD
- Breathing CV
- Breathing amplitude CV

GUIDED TESTS
Pulse tests:
- Squat CRF Test (Ruffier-Dickson, Ruffier, HRR1, load reaction, recovery index, VO2max abs/rel)
- Active Stand Test (delta HR, stand ratio, stand slope)
- Deep Breathing 6/min Test (E:I ratio, I-E difference, RMSSD)

Breathing tests:
- RR Recovery Test (recovery time, delta RR)
- Paced Breathing 6/min Test (error to target, compliance, breathing quality)

BREATHING PROTOCOLS
- Guided breathing protocols with stage timers and safety information.
- Clean protocol names in the main list, with detailed purpose and safety notes inside each protocol screen.

QUALITY-FIRST MEASUREMENT LOGIC
- Strict contact and motion checks
- Early quality gate + continuous quality validation
- Automatic rejection of unreliable sessions (instead of misleading numbers)
- Clear localized error messages when signal quality is insufficient

TRACKING, HISTORY, SHARING
- Measurement history with tags
- Detailed report cards for pulse, breathing, and tests
- Shareable result cards
- Bilingual interface (English / Russian)

PRIVACY BY DESIGN
Your measurements are processed on-device. Pulse Monitor does not require registration, does not include ads or tracking SDKs, and does not sell your data.

IMPORTANT
Pulse Monitor is not a certified medical device and does not provide diagnosis or treatment decisions.

Pulse Monitor does NOT measure (and does not claim to measure):
- Blood pressure
- Blood glucose
- Medical-grade SpO2
- Lung volume
- ECG intervals (PR/QRS/QT)
- Cardiac output


## Version history (last 3 releases)

### 5.0 — 2026-06-14

Bug fixes and performance improvements.

### 4.0 — 2026-04-06

Bug fixes and performance improvements.

### 3.0 — 2026-02-18

No release notes.

## Apps similar to Pulse Monitor

| App | Rating | Price | Category |
| --- | --- | --- | --- |
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| [VitalContext](https://appshunter.io/ios/app/vitalcontext/id6758859542) | — | Free | Health & Fitness |
| [AIHeal24](https://appshunter.io/ios/app/aiheal24/id6752254204) | — | Free | Health & Fitness |
| [Froggy Squat - Reps & Wall Sit](https://appshunter.io/ios/app/froggy-squat-reps-and-wall-sit/id6761092580) | 5.0 (1) | Free | Health & Fitness |
| [Medical Scanner AI](https://appshunter.io/ios/app/medical-scanner-ai/id6757233531) | — | Free | Health & Fitness |
| [MyPulse Monitor:Heart Rate&HRV](https://appshunter.io/ios/app/mypulse-monitorheart-rate-and-hrv/id6754377379) | — | Free | Health & Fitness |

## More apps by Xeniya Bykhova

- [Omnia: Astrology](https://appshunter.io/ios/app/omnia-astrology/id6745745471)
- [Sleep Timer: No Subs Apps](https://appshunter.io/ios/app/sleep-timer-no-subs-apps/id6759440745)
- [Daily Planner: by NS Apps](https://appshunter.io/ios/app/daily-planner-by-ns-apps/id6759653980)
- [Dog Training: by NS Apps](https://appshunter.io/ios/app/dog-training-by-ns-apps/id6759794143)
- [Poem Learner: by NS Apps](https://appshunter.io/ios/app/poem-learner-by-ns-apps/id6759861759)

All apps by Xeniya Bykhova: https://appshunter.io/developer/1787778807

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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 2026-07-09.*