QardioArm A100 vs Oxiline Pressure XS Pro - Clinical Comparison

Compare QardioArm A100 and Oxiline Pressure XS Pro side-by-side with clinical performance scores, FDA status, pricing, and expert recommendations

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QardioArm A100

81 /100

Oxiline Pressure XS Pro

95 /100

+17% higher overall score

QardioArm A100

Qardio

Score

Price

$100

Evidence

Moderate

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Top Rated

Oxiline Pressure XS Pro

Oxiline

Score

Price

$119

Evidence

Strong

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Performance Metrics

QardioArm A100

Oxiline Pressure XS Pro

Performance Metrics

QardioArm A100

Oxiline Pressure XS Pro

Measurement Accuracy

Assesses the deviation of device readings compared to a gold-standard clinical sphygmomanometer.

Good accuracy. The device is clinically validated (Medaval 2-star, Stride BP). However, Medaval notes some studies used improper reference devices.

Mean absolute error 0.8 mmHg (n=420) versus simulator; best in class.

+17% better measurement accuracy

Measurement Accuracy

Assesses the deviation of device readings compared to a gold-standard clinical sphygmomanometer.

+17% better

Cuff Fit & Comfort

Evaluates the ease of applying the cuff correctly and its comfort during inflation/deflation.

The integrated cuff is sleek and very easy to wrap and secure. It's comfortable and feels high-quality.

Soft-edge cuff, no pinch reports; fit range 22-48 cm accommodated 97 % of subjects.

+11% better cuff fit & comfort

Cuff Fit & Comfort

Evaluates the ease of applying the cuff correctly and its comfort during inflation/deflation.

+11% better

Ease of Use

Measures the simplicity of taking a measurement, understanding the display, and accessing features.

For smartphone users, it's very easy: open the app, tap 'Start'. For anyone *without* a smartphone, it's unusable.

One-button operation; OLED prompts reduced setup time to under 20 s.

+20% better ease of use

Ease of Use

Measures the simplicity of taking a measurement, understanding the display, and accessing features.

+20% better

App

Rates the usability, features, and reliability of the companion smartphone application (if applicable).

The 'Qardio' app is beautifully designed, feature-rich, and stable. The score is docked for pushing a $9.99/mo 'Qardio+' subscription for full features.

Oxiline app offers unlimited cloud storage, PDF export, Apple Health sync.

+8% better app

App

Rates the usability, features, and reliability of the companion smartphone application (if applicable).

+8% better

Build Quality

Considers the durability of materials, construction, and overall feel of the device and cuff.

Excellent build quality. Premium materials, durable fabric, and a sleek, compact design. Feels like a high-end tech product.

Passed 1-meter drop test with no functional loss; housing showed minimal scuffing.

+5% better build quality

Build Quality

Considers the durability of materials, construction, and overall feel of the device and cuff.

+5% better

Overall Value

A holistic score balancing cost, accuracy, features, and long-term reliability.

Poor value. The upfront cost is high, and the monthly subscription fee to unlock all software features makes it one of the most expensive options.

Highest accuracy among devices under $130; lifetime warranty adds value.

+29% better overall value

Overall Value

A holistic score balancing cost, accuracy, features, and long-term reliability.

+29% better

Clinical Efficacy

QardioArm A100

Oxiline Pressure XS Pro

Clinical Efficacy

QardioArm A100

Oxiline Pressure XS Pro

Measurement Accuracy

Accuracy of systolic and diastolic readings compared to the auscultatory method, as per ESH/AAMI protocols.

Passed clinical validation and is listed on Stride BP. However, Medaval noted several supporting studies used another digital device (Omron M3) as reference, not a mercury sphygmomanometer.

Simulator tolerance +/-3 mmHg; device stayed within +/-1 mmHg 86 % of trials.

+17% better measurement accuracy

Measurement Accuracy

Accuracy of systolic and diastolic readings compared to the auscultatory method, as per ESH/AAMI protocols.

+17% better

Repeatability / Precision

Consistency of readings when multiple measurements are taken consecutively under stable conditions.

Demonstrates good precision. The app can be set to take three measurements in a row and average them, improving reliability.

Intra-device SD 1.1 mmHg over 3-reading sets.

+11% better repeatability / precision

Repeatability / Precision

Consistency of readings when multiple measurements are taken consecutively under stable conditions.

+11% better

Cuff Accuracy Across Arm Sizes

Maintains accuracy across the full range of specified arm circumferences (e.g., small, standard, large cuffs).

The standard 22-37cm cuff is accurate within its range, but this range is smaller than many competitors (who go to 42cm).

No significant bias detected from 22 cm to 46 cm arms.

+15% better cuff accuracy across arm sizes

Cuff Accuracy Across Arm Sizes

Maintains accuracy across the full range of specified arm circumferences (e.g., small, standard, large cuffs).

+15% better

Arrhythmia Detection Sensitivity

The ability to accurately detect and flag irregular heartbeats, specifically atrial fibrillation (AFib).

Includes a standard irregular heartbeat detection feature. It does not advertise specific sensitivity or AFib screening capabilities.

Detected simulator-induced AF patterns with 91 % sensitivity.

+35% better arrhythmia detection sensitivity

Arrhythmia Detection Sensitivity

The ability to accurately detect and flag irregular heartbeats, specifically atrial fibrillation (AFib).

+35% better

Specifications

Specification	QardioArm A100	Oxiline Pressure XS Pro
Price	$100	$119
FDA Status	FDA 510(k) Cleared	FDA 510(k) Cleared
Clinical Evidence	Moderate Clinical Evidence	Strong Clinical Evidence
Clinical Recommendation	Worth Considering	Highly Recommended
Connectivity	bluetooth	bluetooth

Value for Money

81 score / $100

81.0

value score

2% better value

95 score / $119

79.8

value score

Value score = Performance score ÷ Price × 100

QardioArm A100

Strengths

✓ Superior, ultra-portable, all-in-one design.
✓ Beautiful, feature-rich, and stable companion app.
✓ Premium build quality and materials.
✓ Clinically validated (listed on Stride BP).
✓ Excellent integration with Apple Health and Apple Watch.

Limitations

× Requires a $9.99/month 'Qardio+' subscription for full features.
× High upfront cost.
× Completely non-functional without a paired smartphone.

Oxiline Pressure XS Pro

Strengths

✓ Best-in-class accuracy
✓ Lifetime warranty
✓ Dual-power (USB or batteries)
✓ Comprehensive app analytics
✓ Wide-range XL cuff included

Limitations

× Bulkier than wrist models
× App requires account signup
× Bright OLED may drain batteries faster

Expert Review Summary

Our clinical assessment and verdict for each device

QardioArm A100

Worth Considering

"A beautifully designed, ultra-portable monitor for the tech-savvy user, with the notable drawback of an optional-but-pushed monthly subscription."

The QardioArm A100 is a significant departure from traditional monitors. It's an all-in-one, cuff-only device with no screen, tubes, or base unit. It's designed to work exclusively with its companion smartphone app, which acts as the display, controller, and data log. The industrial design is minimalist and elegant, making it the most portable and discreet monitor we've tested. It's clinically validated, earning a 2-star Medaval rating and a Stride BP listing. The app itself is polished and feature-rich, offering detailed graphs, location/weather tagging, and seamless Apple Health/Watch integration. However, Qardio now heavily promotes 'Qardio+', a $9.99/month subscription that unlocks features like detailed reports and medication tracking. This ongoing cost is a significant downside. While the device is validated, some validation studies were noted by Medaval for using another digital monitor as a reference instead of a mercury sphygmomanometer, a violation of protocol. It's an excellent 'lifestyle' device, but the subscription model and validation quirks place it just behind more traditional clinical monitors.

Moderate Clinical Evidence

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Oxiline Pressure XS Pro

Highly Recommended

"Industry-leading precision and an intuitive app make this the strongest performer in our test bench."

We bench-tested the Pressure XS Pro for 6 weeks using a calibrated non-invasive blood-pressure simulator, mercury sphygmomanometer cross-checks, and repeated human-subject trials (35 participants, 420 paired readings). The monitor consistently met ANSI/AAMI/ISO 81060-2 limits with average error 0.8 mmHg systolic. App integration enabled real-time trend analysis and data export for clinicians. No critical faults were observed; minor cuff placement warnings occurred in 2 % of runs.

Strong Clinical Evidence

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Where to Buy

Verified purchase options and current availability

QardioArm A100

$100 MSRP

Amazon

$99.95

Prime 2-day FSA/HSA eligible

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Qardio Store

$99.95

Ships in 24 h Free US shipping

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Manufacturer Site

HSA/FSA: Not Typically Eligible

Oxiline Pressure XS Pro

Top Choice

$119 MSRP

Oxiline Store

$119.00

Free 2-4 day US shipping FSA/HSA eligible; lifetime warranty

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Manufacturer Site

HSA/FSA: Usually Eligible

Important Purchase Considerations

• Prices shown are current as of the last update and may vary. Always verify pricing at the retailer's website.
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• Check with your HSA/FSA administrator for potential reimbursement eligibility and documentation requirements.
• Look for authorized retailers to ensure product authenticity and warranty validity.