# LibreArm — Offline Blood Pressure Tracker

> Offline blood pressure tracker for QardioArm, saving data to Apple Health. (iPhone/iPad app by PAUL ANDREW TAYLOR.)

- Source: https://appshunter.io/ios/app/librearm/id6752661389 (this page in markdown: same URL + `.md`)
- Developer: [PAUL ANDREW TAYLOR](https://appshunter.io/developer/1840428821)
- Category: Medical, Health & Fitness
- Price: Free
- Rating: 4.80/5 from 48 App Store ratings · 56 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.5 · 1 MB
- Languages: American English
- Released: 2025-11-20
- Data updated: 2026-09-09
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/librearm/id6752661389/reviews.md

## What is LibreArm?

LibreArm is a free, open-source iPhone app that connects directly to a QardioArm blood-pressure monitor over Bluetooth and can save completed owner readings to Apple Health. It requires no Qardio account, subscription or cloud service.

Features:
• Connect directly to QardioArm over Bluetooth
• Choose one, two or three readings with automatic averaging
• Save completed systolic, diastolic and heart-rate values to Apple Health
• Use one-shot Guest Measurement mode without saving to the owner’s Health data
• View live measurement progress and a compact NICE home-reading guide
• See clear connection, battery, pairing and Health-save outcomes
• Keep all processing on the iPhone with no analytics, advertising or tracking

LibreArm is an independent community project and is not affiliated with or endorsed by Qardio, Inc. QardioArm™ is a trademark of Qardio, Inc.

LibreArm is intended for personal wellness tracking only. It does not provide diagnosis, treatment or medical advice. Follow the monitor manufacturer’s instructions and seek advice from a qualified healthcare professional if a reading or symptom concerns you.

## Key features

- Connects to QardioArm via Bluetooth
- Saves readings to Apple Health
- Offline data storage
- Simple, clean interface
- Open-source project

## Recent user reviews (10 of 56)

All indexed reviews: https://appshunter.io/ios/app/librearm/id6752661389/reviews.md

### 5/5 — Now my QardioArm isn’t just a doorstop

*2026-08-27, version 1.6.0*

Thank you for identifying a problem, coming up with a solution, and not charging a subscription!

### 5/5 — Great replacement for Qardio app

*2026-08-19, version 1.6.0*

LibreArm is a perfect replacement for the Qardio blood pressure app. Well built app and stable. Thank you for developing this and open sourcing it too

### 5/5 — Thank You and Great update!

*2026-08-02, version 1.6.0*

Thank you for creating this app! I can now use my Qardio Arm after the Qardio app disappeared. The latest update now is even better to sync to Apple Health!

### 5/5 — Thank You!!

*2026-07-31, version 1.6.0*

I cannot thank Paul enough for creating this app. Not only has it prevented my BP cuff from becoming e-waste, this app works better than the manufacturer’s did! And it’s free!  A triple gift!

### 5/5 — Thank you

*2026-07-30, version 1.5.0*

Thank you for developing a simple and effective app!

### 5/5 — Works for me!

*2026-07-26, version 1.5.0*

Very thankful I found this app. Thank you to the developer!! It works with my Qardioarm device and syncs with apple health app. Thanks again Paul Taylor!

### 5/5 — Fantastic App

*2026-07-23, version 1.5.0*

Thank you Paul Taylor !!!  You provided a wonderful service for anyone with a Qardio BP cuff.  Works great!

If it doesn’t work - try replacing the four AAA batteries in your Qardio cuff.  That’s what we needed.

### 1/5 — Apple health integration broken

*2026-06-27*

Please advise as it is not writing to Apple health, shows inactive in Apple health with no trigger to enable

### 5/5 — Works great!

*2026-06-22*

Thank you so much for making this available.  My wife and I rely on our Qardio unit to take twice daily measurements.  It means a lot that we can do it at home with this App.

### 5/5 — Brilliant !!

*2026-05-24, version 1.5.0*

Thank u so much for making this app — I’ve been using my Qardio for 5+ years only to find out there is no longer an original app for my iPhone … and your app works perfect — ❤️🩸

## Frequently asked questions about LibreArm

### What does LibreArm do?

LibreArm is an open-source iOS application that connects to your QardioArm blood pressure monitor via Bluetooth. It allows you to save your systolic, diastolic, and heart rate readings directly to your iPhone and optionally to Apple Health, all while keeping your data offline.

### What are the key features of LibreArm?

Key features include direct Bluetooth connection to QardioArm, saving readings to Apple Health, a simple and clean interface for starting/stopping measurements, and entirely offline data storage on your iPhone. It is also an open-source project for transparency.

### Is LibreArm free to use?

Yes, LibreArm is a free application. It does not require any accounts, subscriptions, or cloud services, and it contains no ads or analytics, ensuring a private and cost-free experience for users.

### What devices is LibreArm compatible with?

LibreArm is designed for iOS devices and specifically connects to the QardioArm blood pressure monitor via Bluetooth. Your readings are saved locally on your iPhone and can be optionally shared with Apple Health.

### Who is LibreArm intended for?

LibreArm is intended for personal wellness tracking. It is for individuals who use a QardioArm monitor and prefer to keep their health data private and offline, without the need for external accounts or cloud storage. It is for tracking purposes only and does not provide medical advice.

## Version history (last 5 releases)

### 1.6.0 — 2026-07-31

New in v1.6.0

• Choose one, two or three readings, with automatic averaging and a configurable interval.
• Use one-shot Guest Measurement mode without writing the guest result to Apple Health or changing owner settings.
• See clear Apple Health authorisation, save outcomes and recovery guidance.
• Follow live pressure progress while classification waits for the completed result.
• Use the compact NICE home-reading guide with text, symbols and threshold details.
• See device-reported irregular-pulse information when supplied by the cuff, clearly identified as non-diagnostic.
• Benefit from safer cancellation, pairing recovery, connection timeouts and defensive measurement handling.
• See foreground cuff battery status and low or critical battery warnings.
• Includes privacy-manifest and reliability improvements.

### 1.5.0 — 2026-01-13

New in v1.5.0

• Always-Visible Hypertension Graph
– Blood pressure graph is now permanently displayed on the main screen
– No longer hidden behind a modal or button
– Shows a placeholder graph with reduced opacity when no readings exist yet
– Automatically updates with each new reading
– Color-coded zones: Low (cyan), Normal (green), Prehypertension (orange), Stage 1 (pink), Stage 2 (red)

• Settings Persistence
– User preferences are now saved between app sessions
– “Save to Apple Health” toggle state is persisted
– “Average (3 readings)” mode selection is persisted
– Delay slider value is persisted (15s, 30s, 45s, or 60s)
– Settings are restored automatically on app launch

• Improved UI Layout
– Streamlined interface with no shifting elements
– Removed app icon from the main view to reduce clutter
– Top bar now shows “LibreArm” on the left and “Blood Pressure” on the right
– Status and battery information displayed on a dedicated line
– Delay slider is always visible (disabled when not in Average mode)
– Fixed layout prevents UI jumping when toggling settings

• Enhanced Graph Integration
– Hypertension classification graph embedded directly in the reading card
– Proper axis labels (Systolic / Diastolic in mmHg)
– Zone labels clearly positioned and left-aligned
– Reading plot point includes a white border and shadow for better visibility

• Version updated to 1.5.0

### 1.4.0 — 2026-01-06

Battery Level Display: Real-time battery monitoring using standard BLE Battery Service (0x180F)
Battery percentage shown in UI under connection status
Low battery warning (≤20%)
Critical battery alert (≤10%)

Battery Notifications: Background notifications when battery crosses low/critical thresholds (only when app is backgrounded)

Critical Battery Protection: Measurements are blocked when battery ≤10% to prevent incomplete readings
Clear warning message displayed
Stop button remains functional during ongoing measurements

Strict Reading Validation: Enhanced data quality control
Invalid or incomplete readings are no longer displayed or saved to Apple Health
Readings validated for physiological plausibility (ranges, systolic > diastolic, pulse pressure)
Clear warning messages when measurements fail validation

Average Mode Improvements: Requires all 3 readings to be valid
If any reading is invalid, the entire average session is rejected
No partial averages saved to Health
User prompted to retry if session invalid

Automatic Battery Checks: Battery level read on connect, before measurements, and after completion

Version updated to 1.4.0

Special Thanks:
v1.4.0 was inspired by valuable community feedback:
Battery percentage monitoring suggested by ashok-raj (https://github.com/ashok-raj)
Inaccurate reading validation improvements suggested by stacksjb (https://github.com/stacksjb)

### 1.3.0 — 2025-10-21

• Added a new delay slider — choose a 15, 30, 45, or 60-second pause between readings in Average Mode
• Improved Average Mode clarity and accuracy, with better handling of invalid readings
• Updated controls: all toggles and sliders are now disabled during active measurements to prevent accidental changes
• Enhanced stability and reliability of multi-run sessions
• General performance and UI improvements

### 1.2.0 — 2025-10-15

• New Average Mode: the app now performs 3 readings spaced 10 seconds apart, and saves the averaged result
• Live countdown display between runs (“next in Xs…”)
• Stop button stays red and active until the entire 3-run sequence completes
• Screen no longer sleeps during measurements
• Added version label in the app footer for clarity

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## Related topics

[qardio app](https://appshunter.io/ios/topics/qardio-app)

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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 2026-09-09.*