Remote health, explained simply
Practical, plain-language guides on monitoring blood oxygen and heart rate — and keeping an eye on the people you care about from anywhere.
How to Monitor an Elderly Parent's Oxygen Levels Remotely
How to track an aging parent's blood oxygen (SpO₂) and heart rate from another home — what you need, how to get started, and what to watch for.
Read guideWhat Is a Normal SpO₂ Reading? Blood Oxygen Levels Explained
What blood oxygen (SpO₂) measures, what counts as a normal reading, why readings vary, and when a low number is actually a concern.
Read guideAre Pulse Oximeters Accurate? What Affects Your Readings
How accurate consumer pulse oximeters really are, what affects readings (skin tone, cold hands, nail polish, motion), and how to get a reliable one.
Read guideHow to Monitor COPD at Home: Oxygen Levels & Warning Signs
How to monitor COPD at home: what to track day to day, a normal SpO₂ range for COPD, the warning signs of a flare-up, and how remote monitoring helps.
Read guideHow to Choose a Remote Pulse Oximeter App: What to Look For
The features that matter in a remote pulse oximeter app — true remote viewing, custom alerts, disconnect warnings, history, and privacy.
Read guideO2Ring vs SleepU vs Checkme O2 Max: Which to Buy in 2026
O2Ring, O2Ring S, SleepU, Checkme O2 Max or Oxyfit? An honest comparison of Wellue / Viatom pulse oximeters for overnight tracking and remote monitoring.
Read guideSpO₂ Drops During Sleep: What's Normal and When to Talk to a Doctor
Saw your blood oxygen dip overnight? What normal nighttime SpO₂ variation looks like, which patterns are worth a conversation with a doctor, and how to record useful data.
Read guideChoosing a Pulse Oximeter for an Elderly Parent
How to pick a pulse oximeter for an older adult: comfort, ease of use, overnight tracking, alarms, and letting family keep an eye on the readings remotely.
Read guideHow to Set Up Overnight Oxygen Monitoring at Home
A practical guide to tracking blood oxygen overnight at home: the equipment you need, how to wear it, how to read your first nights, and when to see a doctor.
Read guideWhat Oxygen Level Is Too Low? When a Low SpO₂ Is Dangerous
What counts as a dangerously low blood oxygen level, what readings like 92%, 90% and 88% really mean, and when a low SpO₂ needs urgent medical attention.
Read guideUsing a Pulse Oximeter for Sleep Apnea: Tracking Oxygen Overnight
How a pulse oximeter helps with sleep apnea — what oxygen desaturation looks like, what the ODI means, which device to use overnight, and why it is not a diagnosis.
Read guideNormal Blood Oxygen Levels by Age: SpO₂ Chart & Reference
Normal blood oxygen (SpO₂) by age — a clear chart for babies, children, adults and older adults, plus why a healthy range doesn't actually fall with age.
Read guideHow to Read a Pulse Oximeter: SpO₂, PR and PI Explained
What the numbers on a pulse oximeter mean — SpO₂, pulse rate (PR bpm) and the perfusion index (PI) — plus how to get a reading you can actually trust.
Read guideThe Best Remote Pulse Oximeter App for iPhone in 2026
Looking for an iPhone app to watch someone's blood oxygen from afar? How remote oximeter apps differ from ordinary ones, what to look for, and how to set one up.
Read guideBlood Oxygen at High Altitude: What's Normal and When to Worry
Blood oxygen by altitude — what SpO₂ is normal at elevation, why it drops, at what altitude you might need oxygen, and how to tell acclimatization from altitude sickness.
Read guideViHealth Alternative for the O2Ring: Remote View & Alerts
ViHealth only shows live O2Ring data on the paired phone, in Bluetooth range. What that means in practice, and how to get remote viewing and low-oxygen alerts.
Read guideCan You View Wellue O2Ring Data Remotely? Yes — Here's How
Yes, but not with the ring and ViHealth alone. What remote O2Ring viewing actually needs, and how to set it up so family can watch live from anywhere.
Read guideBest App for the Wellue O2Ring: ViHealth & Alternatives
The best app for your Wellue O2Ring: what ViHealth does well, its one big limit, and which companion app adds remote viewing and low-oxygen alerts.
Read guideViHealth Not Working or Lost Data? Causes and What to Do
ViHealth not working, not syncing, or history gone after an update? Here's why ViHealth loses data, what you can salvage, and how to avoid it next time.
Read guideHow to View Your O2Ring on Two Phones (and Watch It From Another Room)
Want to view your O2Ring on two phones? A ring pairs to one phone at a time over Bluetooth. Here's the honest reason why, and how remote viewing actually works.
Read guideWhat Pulse Oximeter Do You Need for Remote Oxygen Monitoring?
Not sure what pulse oximeter to buy to monitor oxygen at home or overnight? Here's how to choose the right one for ongoing, remote SpO2 monitoring.
Read guideThe Best Continuous Pulse Oximeter for Overnight Oxygen Tracking
The best continuous pulse oximeter for overnight oxygen tracking: what to look for in a wearable SpO₂ monitor for sleep, plus the top pick and remote-viewing on iPhone.
Read guideSpot-Check vs Continuous Pulse Oximeter: Which One Should You Buy?
Fingertip spot-checker or a continuous Bluetooth ring? The honest difference between the two types of pulse oximeter, and which to buy for occasional vs overnight use.
Read guideUsing a Pulse Oximeter with CPAP: Is Your Therapy Actually Working?
Your CPAP machine reports compliance and AHI, but it never measures blood oxygen. Here is how a pulse oximeter verifies your therapy keeps oxygen up overnight.
Read guideBest Bluetooth Pulse Oximeters 2026: Continuous & Remote
Our picks for the best Bluetooth pulse oximeter 2026 buyers — continuous rings, wrist units, and fingertip options for overnight tracking, alerts, and remote viewing.
Read guideWhat Is PI (Perfusion Index) on a Pulse Oximeter?
PI (the perfusion index) shows how strong your pulse signal is — a perfusion index chart, what a normal PI range looks like, what a low reading means, and PR bpm.
Read guideWellue Remote Linker Alternative: Remote Monitoring by App
Looking at Wellue's Remote Linker to watch an Oxylink or O2Ring from afar? Why an app like OxyRemote is a simpler, cheaper way to monitor someone's oxygen remotely.
Read guideOvernight Pulse Oximetry Test at Home: How It Works
What an overnight pulse oximetry test measures, how to do one at home with a recording oximeter, what the results can show, and how it differs from a sleep study.
Read guideViatom Checkme O2 Max Review: Wrist Oxygen Monitor
An honest Checkme O2 Max review: what the wrist-worn Viatom oxygen monitor does well, its battery and comfort trade-offs, and how it compares to the O2Ring.
Read guideO2Ring vs O2Ring S: What Actually Changed
The Wellue O2Ring S records every second instead of every four, runs 24 hours instead of 16, and charges by USB-C. What that changes — and what doesn't.
Read guideViHealth O2 Score: What It Means and What It Doesn't
Wellue's ViHealth app scores your night out of 10. What the O2 Score actually combines, how to read the colour, and the limits worth knowing before you worry.
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