Comparison

Withings vs OxyKnight

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Withings

This app serves as a central hub for managing your health, consolidating data from various devices and apps. It provides insights, educational content, and tools to track progress towards goals like weight loss, activity, and sleep. Share your health data securely with your doctor for informed medical decisions.

Highlights
  • Unified health data from devices and apps
  • Weight and body composition monitoring
  • Activity and sleep tracking
  • Blood pressure and cardiovascular health
  • Personalized health insights and coaching
  • Family health profiles
  • Doctor-shareable health reports
Features
Read full description

Whatever your goal—weight loss, activity, blood pressure management, or better sleep—the Withings App is your gateway to health management, offering education, insights, and a seamless way to stay connected. Built on clinical expertise, it unifies your health data to drive smarter decisions and lasting results. YOUR HEALTH ECOSYSTEM, SEAMLESSLY CONNECTED Easily install all your Withings devices and sync your data to bring your health universe together. ALL YOUR HEALTH APPS UNIFIED Connect your health apps like Apple Health, Strava, MyFitnessPal, and more to centralize your data with ease. TRUST MEDICAL-GRADE PRECISION, TO DRIVE PROGRESS Clinical-grade accuracy delivers reliable insights that help you make confident, informed decisions about your health. • WEIGHT & BODY COMPOSITION MONITORING • ACTIVITY MONITORING • SLEEP SCORE • HYPERTENSION MANAGEMENT • CARDIOVASCULAR DISEASE DETECTION • MENSTRUAL CYCLE TRACKING • NUTRITION TRACKING " SHAPE YOUR HEALTH JOURNEY Create a tailored health profile, monitor symptoms, and set achievable goals to better understand your body, stay motivated, and improve your health over time MULTIPLE PROFILES TO TRACK FAMILY HEALTH Track the health of your entire household from one app and easily share data between profiles for a more connected approach to care. INSTANTLY SHARE WITH YOUR DOCTOR Generate secure, shareable reports or send a live link to your health dashboard, giving your healthcare provider immediate access to your most up-to-date metrics. Withings+ POWERING YOUR JOURNEY TO LONGEVITY Precision health made personal—AI and in-app cardiologists guiding you forward. With Withings+, our premium subscription service, you decode your health through clinical reviews and AI assessments, delivering precise, tailored care to strengthen long-term habits and help support your journey toward a better, longer life. YOUR HEALTH SIMPLIFIED All metrics consolidated in one powerful Health Improvement Score to guide your long-term health. SPECIALIST CARE AT YOUR FINGERTIPS Get your ECG reviewed by a cardiologist within 24 hours — with an average wait time of just 4 hours (Observed Jan–Mar 2025). Feel confident knowing your heart health is in expert hands, quickly and reliably. DECODE YOUR BODY With Withings Intelligence, experience around-the-clock AI-driven insights, smart trend analysis, and personalized coaching to help you take control of your health. Kickstart your day with our brand new Vitalité Indicator. This powerful tool brings together key health metrics—including HRV, temperature, sleep patterns, and more — to evaluate your rest and effort levels. Based on these insights, it offers personalized suggestions to help you boost your energy and optimize recovery for the days ahead. You’ll also receive a detailed breakdown that can highlight early signs of potential illness and signal when it’s time to give yourself extra care. YOUR WEEKLY HEALTH BREAKDOWN Track your strengths and weaknesses each week to refine and boost your Health Improvement Score. ABOUT WITHINGS ​​Withings creates clinically validated health devices embedded in beautifully designed, easy-to-use products. A universe of insights all synced to a single source of truth, providing you with the ultimate way to stay connected to your health. Terms of use:https://www.withings.com/legal/applications-conditions#/legal/services-terms-and-conditions Privacy policy: https://www.withings.com/legal/applications-conditions#/legal/privacy-policy Medical compliance: https://www.withings.com/eu/en/compliance?srsltid=AfmBOoovZiYectAmYJC5gs2HhHrMxHAhPdN4NFQQI5RSImnQdrLoxKSc

About

OxyKnight

This app works with compatible smart oximeter devices to monitor and record overnight pulse oximetry. It provides detailed sleep reports with SpO2 and PR trends, customizable alarms, and spot-checking capabilities for oxygen saturation and respiration rate.

Highlights
  • Overnight HRPO monitoring
  • Sleep reports with SpO2/PR trends
  • Customizable SpO2/PR alarms
  • Spot Check SpO2, PR, Respiration Rate
  • Bluetooth device connection
  • Shareable sleep data
Features
Read full description

The updated OxyKnight® App is now compatible with multiple CMI Health smart oximeters including the OxyKnight® Watch, the OxyKnight® Watch Lite, and the OxyKnight® Finger. The OxyKnight® Watch and Watch Lite are perfect for anyone who snores, who feels not fully rested after sleep, has sleep disorders or oxygen issues, or people who may need to be monitored during sleep. They are very comfortable to wear and operate continuously throughout the night. It’s made with a soft, flexible fingertip cup and adjustable wrist strap for simple use. Just 1 tap within the App to connect the Watch with the OxyKnight® App via Bluetooth. The OxyKnight® Finger is a clinical-grade smart fingertip oximeter designed for home use, sports, and aviation. Check your oxygen saturation anytime, anywhere, and sync results effortlessly with the OxyKnight® App. FEATURES (Need the compatible and designated OxyKnight® device for the specific functionality) - Monitors and records HRPO (High-Resolution Pulse Oximetry) overnight - Sleep report includes SpO2 and PR trend graph, and a series of statistics. Easy to share with family members or doctors. - Trend data for sleep quality, SpO2, and PR - Customizable SpO2 and PR alarms - Spot Check SpO2, PR, and Respiration Rate Disclaimer: Please always seek a doctor’s advice before making any medical decisions.

Screenshots

Withings4 screens
OxyKnight4 screens

Verdict

The call

The clearest difference is rating: Withings at 4.6 against OxyKnight's 4.0. Withings also leads on ratings volume (369K vs 12) and chart position (#72 vs unranked). OxyKnight's advantage is in-app purchases (none vs 3) and review sentiment (50% vs 24%). On price, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Withings sells 3 in-app purchases, starting at $9.99 per month. OxyKnight asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Withings holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: Withings has 369K ratings behind it against 12, so its average is the more settled of the two. Written reviews complicate that: 24% of Withings's written reviews are positive against 50% of OxyKnight's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 28, 2026 and October 22, 2026 respectively.

Scorecard7 real differences · 4 level
Withings versus OxyKnight: the parameters behind the verdict, then further details
ParameterWithingsOxyKnight
PriceFreeFree
Rating4.6 (369K ratings) — better4.0 (12 ratings)
Positive reviews24.2% of reviews50.0% of reviews — better
Number of ratings369K — better12
Update frequencyFortnightlyFortnightly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#72 — better—
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPod
Requires iOS18.013.0 — better
Further details — not scored
Size461 MB48 MB
Age rating4+4+
DeveloperWithingsCMI Health Inc.

Customer experience

Withings

All ratings368,692 ratings
Positive90.0%
Neutral3.4%
Negative6.5%
Written reviews6,260 reviews
Positive24.2%
Neutral9.4%
Negative66.3%

OxyKnight

All ratings8 ratings
Positive62.5%
Neutral0.0%
Negative37.5%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Bugs and requests

Withings

Reported bugs

4 issues
  • Inconsistent weight data reporting
  • App crashes or freezes on launch
  • Inaccurate body composition measurements
  • Unreliable blood pressure readings

Requested features

4 requests
  • Improved sleep tracking and reporting
  • More granular data visualization
  • Ability to manually edit or delete measurements
  • Better integration with third-party apps

OxyKnight

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Withings

Subscriptions2
  • Withings+ Monthly offer14 Days trial$9.991 Month
  • Withings+ Annual offer14 Days trial$99.991 Year
One-time1
  • ECGs Cardiologist Review$59.99
None

OxyKnight

No in-app purchases

Questions

Is Withings free?
Withings is free to download, with in-app purchases available.
Is OxyKnight free?
OxyKnight is free to download, with no in-app purchases.
Which has better reviews, Withings or OxyKnight?
Withings is rated higher. Withings averages 4.6 out of 5 from 369K ratings, while OxyKnight averages 4.0 from 12 ratings.
Do Withings or OxyKnight have ads?
Neither Withings nor OxyKnight shows ads.
Which is updated more often, Withings or OxyKnight?
Withings ships an update fortnightly, and OxyKnight fortnightly. Most recently, Withings was updated on October 28, 2026 and OxyKnight on October 22, 2026.

Other comparisons