Sonmol Upgraded Digital Peak Flow Meter with ePEF App (SMPF-2S) vs MIR Spirobank Oxi - Clinical Comparison

Compare Sonmol Upgraded Digital Peak Flow Meter with ePEF App (SMPF-2S) and MIR Spirobank Oxi side-by-side with clinical performance scores, FDA status, pricing, and expert recommendations

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Sonmol Upgraded Digital Peak Flow Meter with ePEF App (SMPF-2S)

86 /100

MIR Spirobank Oxi

93 /100

+8% higher overall score

Sonmol Upgraded Digital Peak Flow Meter with ePEF App (SMPF-2S)

Sonmol

Score

Price

$60

Evidence

Moderate

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Top Rated

MIR Spirobank Oxi

MIR

Score

Price

$249

Evidence

Strong

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Performance Metrics

Sonmol Upgraded Digital Peak Flow Meter with ePEF App (SMPF-2S)

MIR Spirobank Oxi

Performance Metrics

Sonmol Upgraded Digital Peak Flow Meter with ePEF App (SMPF-2S)

MIR Spirobank Oxi

Measurement Accuracy

Evaluates the precision and reliability of the spirometer's readings compared to clinical-grade laboratory equipment.

Provides reliable daily trending for PEF and FEV1 using a differential pressure transducer, though it lacks the advanced quality prompts and strict tolerances of premium clinical devices.

Meets strict ATS/ERS 2019 spirometry standards and ISO standards for oximetry, delivering highly reliable clinical-grade data for both volume/flow and SpO2.

+14% better measurement accuracy

Measurement Accuracy

Evaluates the precision and reliability of the spirometer's readings compared to clinical-grade laboratory equipment.

+14% better

Ease of Use

Assesses the simplicity of device operation, setup, and maintenance for the average home user.

Very straightforward 'blow and read' design with the added convenience of automatic app syncing and easy-to-clean detachable mouthpieces.

+2% better ease of use

Consolidating two tests is highly convenient, though mastering the full FVC breathing maneuver and getting a fast read from the touch oximeter requires a brief learning period.

Ease of Use

Assesses the simplicity of device operation, setup, and maintenance for the average home user.

+2% better

App Quality

Measures the functionality, stability, and user interface of the companion digital application.

The ePEF app effectively logs data and displays trends, but it is somewhat basic in design compared to highly polished or AI-driven competitor apps.

The MIR Spirobank app brilliantly displays real-time animations, plethysmographic curves, and handles symptom e-diaries effortlessly.

+14% better app quality

App Quality

Measures the functionality, stability, and user interface of the companion digital application.

+14% better

Value for Money

Weighs the device's feature set, clinical accuracy, and durability against its retail price and ongoing costs.

At roughly $85, it offers a highly affordable entry point into Bluetooth-connected respiratory monitoring, significantly undercutting full-loop smart spirometers.

Provides exceptional value by eliminating the need to purchase and manage a separate, high-quality pulse oximeter, packaging both into one robust clinical ecosystem.

+4% better value for money

Value for Money

Weighs the device's feature set, clinical accuracy, and durability against its retail price and ongoing costs.

+4% better

Clinical Efficacy

Sonmol Upgraded Digital Peak Flow Meter with ePEF App (SMPF-2S)

MIR Spirobank Oxi

Clinical Efficacy

Sonmol Upgraded Digital Peak Flow Meter with ePEF App (SMPF-2S)

MIR Spirobank Oxi

FEV1 Measurement Accuracy

Measures the precision of Forced Expiratory Volume in the first second.

Adequate for home tracking of airway obstruction, providing a reliable baseline for daily asthma action plans.

Maintains excellent precision for FEV1 using the factory-calibrated turbine, accurately capturing essential obstruction data.

+13% better fev1 measurement accuracy

FEV1 Measurement Accuracy

Measures the precision of Forced Expiratory Volume in the first second.

+13% better

FVC Measurement Accuracy

Measures the precision of Forced Vital Capacity readings.

This device is designed specifically for PEF and FEV1; it does not measure Forced Vital Capacity (FVC).

Captures total exhaled volume accurately, allowing for calculation of the FEV1/FVC ratio.

+100% better fvc measurement accuracy

FVC Measurement Accuracy

Measures the precision of Forced Vital Capacity readings.

+100% better

Longitudinal Trend Tracking

Evaluates the device's ability to consistently track respiratory changes over time.

The ePEF app successfully automates longitudinal tracking, representing a massive usability improvement over manual paper logging.

The app stores both spirometry and oximetry data alongside symptom logs, creating a highly detailed, chronological health diary.

+10% better longitudinal trend tracking

Longitudinal Trend Tracking

Evaluates the device's ability to consistently track respiratory changes over time.

+10% better

Clinical Spirometry Correlation

Assesses how closely the home measurements align with formal clinical pulmonary function tests.

Useful for basic asthma management, but lacks the comprehensive parameter scope and strict ATS/ERS 2019 quality prompts for full diagnostic correlation.

Dual tracking of oxygen saturation and full-loop spirometry heavily aligns with the protocols used in formal pulmonary function labs.

+18% better clinical spirometry correlation

Clinical Spirometry Correlation

Assesses how closely the home measurements align with formal clinical pulmonary function tests.

+18% better

Specifications

Specification	Sonmol Upgraded Digital Peak Flow Meter with ePEF App (SMPF-2S)	MIR Spirobank Oxi
Price	$60	$249
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

86 score / $60

143.4

value score

284% better value

93 score / $249

37.3

value score

Value score = Performance score ÷ Price × 100

Sonmol Upgraded Digital Peak Flow Meter with ePEF App (SMPF-2S)

Strengths

✓ Adds Bluetooth connectivity for automatic syncing to the ePEF app.
✓ Measures both PEF and FEV1 instantly on a built-in LCD screen.
✓ Features a Smart Risk Indicator for quick assessment of asthma zones.
✓ Includes two detachable, easy-to-clean mouthpieces.
✓ Highly portable and lightweight design.

Limitations

× Does not measure Forced Vital Capacity (FVC).
× Lacks the rigorous maneuver quality prompts found on higher-end clinical devices.
× The ePEF app is functional but lacks advanced features and interface polish.

MIR Spirobank Oxi

Strengths

✓ Combines full-loop spirometry and pulse oximetry in a single device.
✓ Displays a real-time plethysmographic curve on the smartphone app.
✓ FDA-cleared and fully compliant with ATS/ERS 2019 standards.
✓ Generates unified PDF reports covering all respiratory metrics.
✓ Bluetooth 5.0 ensures fast, stable connectivity.

Limitations

× Lacks a built-in screen; entirely dependent on a smartphone or tablet.
× The touch reflectance oximeter requires warm fingers and a steady hand for the best reading.
× Reusable turbine must be cleaned meticulously to maintain accuracy.

Expert Review Summary

Our clinical assessment and verdict for each device

Sonmol Upgraded Digital Peak Flow Meter with ePEF App (SMPF-2S)

Worth Considering

"An affordable, Bluetooth-enabled digital peak flow meter that successfully bridges the gap between basic manual meters and premium smart spirometers."

The Sonmol Upgraded Digital Peak Flow Meter (SMPF-2S) builds upon the brand's entry-level model by adding crucial Bluetooth connectivity. Designed primarily for asthma and COPD management, it utilizes a differential pressure transducer to measure Peak Expiratory Flow (PEF) and Forced Expiratory Volume in one second (FEV1). The device features a built-in LCD screen for immediate readings and a Smart Risk Indicator that categorizes results into Green, Yellow, or Red zones based on the user's personal best. Unlike its predecessor, the SMPF-2S syncs seamlessly with the ePEF mobile app, allowing patients to track longitudinal trends, log symptoms, and share digital reports with their doctors without maintaining a paper diary. While it lacks Forced Vital Capacity (FVC) measurements and the rigorous maneuver quality prompts of more expensive clinical models like the Vitalograph asma-1 BT, its inclusion of two detachable mouthpieces and a sub-$90 price point make it an excellent mid-tier choice.

Moderate Clinical Evidence

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MIR Spirobank Oxi

Highly Recommended

"A highly versatile, 2-in-1 smart device that seamlessly merges comprehensive clinical spirometry with reflectance pulse oximetry for complete home respiratory management."

The MIR Spirobank Oxi elevates remote patient monitoring by integrating two vital diagnostic tools into a single, highly portable device. Not only does it deliver full Flow/Volume loop spirometry (measuring FVC, FEV1, PEF, FEF2575, and more) using MIR's proven turbine technology, but it also features an innovative touch reflectance pulse oximeter to measure SpO2 and heart rate. FDA-cleared and compliant with ATS/ERS 2019 standards, the device connects via Bluetooth 5.0 to the MIR Spirobank mobile app. This allows users to view real-time plethysmographic curves, track longitudinal trends, log symptoms, and generate comprehensive PDF reports for their healthcare providers. It is an exceptionally powerful tool for managing complex respiratory conditions where both airway obstruction and oxygen saturation are critical metrics.

Strong Clinical Evidence

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Where to Buy

Verified purchase options and current availability

Sonmol Upgraded Digital Peak Flow Meter with ePEF App (SMPF-2S)

$60 MSRP

Sonmol

$55.99

Free Shipping 30 day money back guarantee

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Manufacturer Site

HSA/FSA: Usually Eligible

MIR Spirobank Oxi

Top Choice

$249 MSRP

MFI Medical

$225.00

3-5 business days FSA/HSA eligible; includes trial disposable turbines.

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Manufacturer Site

HSA/FSA: Usually Eligible

Important Purchase Considerations

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