Supported Features
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VoiceOver
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Larger Text
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Dark Interface
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Differentiate Without Color Alone
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Sufficient Contrast
Blood Oxygen Monitor - OxyByte
SpO2 Pulse Oximeter O2 Level
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Breathe free & easy with OxyByte - Your Personal Respiratory Intelligence Companion.
Blood Oxygen Monitor - OxyByte
Track your blood oxygen (SpO₂), respiratory rate, peak flow, symptoms, CPAP usage, and environmental air quality - all in one beautifully simple respiratory health app.
OxyByte helps you understand patterns in your breathing so you can feel informed and confident, not overwhelmed.
Sync Seamlessly with Apple Health
OxyByte integrates with Apple Health to import:
• Blood oxygen (SpO₂)
• Respiratory rate
• Heart rate
• Sleep data
• Apple Watch readings
Automatically keep your data updated from your wearables.
Complete Timeline History
View a structured timeline of:
• Oxygen readings
• Respiratory rate
• Peak flow (PEF)
• CPAP usage
• Inhaler & medication logs
• Symptom episodes
See everything in one place — organized by date and time.
Personalized Respiratory Stability Score
OxyByte compares your recent data to your historical baseline to help you understand whether your patterns are stable or changing.
Designed to highlight trends — not create unnecessary alarm.
Flare-Up Trend Monitoring
Track subtle shifts in:
• Oxygen levels
• Respiratory rate
• Symptom severity
• Inhaler usage
• Sputum changes
Early pattern awareness helps you stay proactive.
Sleep Oxygen & CPAP Insights
• Overnight oxygen distribution
• Percent of night below 90%
• Lowest oxygen recorded
• CPAP adherence tracking
Understand what happens while you sleep.
Symptom Tracking
Log:
• Shortness of breath
• Wheezing
• Cough
• Sputum amount & color
• Chest tightness
• Fatigue
• Fever
Overlay symptoms on charts to reveal meaningful connections.
Outdoor Respiratory Risk
Integrated Air Quality Index (AQI) data helps you understand environmental impact on your breathing.
Flexible Chart Views
View trends across:
• 1 Day
• 1 Week
• 1 Month
• 3 Months
• 1 Year
• All Time
Overlay symptoms and compare metrics for deeper insight.
Designed For
• Asthma
• COPD
• Sleep apnea
• Oxygen therapy users
• Post-viral lung monitoring
• Caregivers
• Anyone tracking blood oxygen
OxyByte is designed to present respiratory health information clearly and calmly — without overwhelming alerts or medical complexity.
Important
OxyByte is not a medical device and does not provide medical diagnosis. Always consult a qualified healthcare professional regarding medical decisions. Read full disclaimer here: https://www.oxybyte.app/disclaimer
Ratings & Reviews
OxyByte now supports iPhone Duo, with layouts that adapt when the device is folded or unfolded and in portrait or landscape.
You can now refresh your Apple Health readings whenever you need to. Tap Sync Now in the Apple Health section under More to import available readings, see the sync progress, and check the result.
We’ve fixed an issue that kept push notifications from appearing in the app. New notifications are now saved in your inbox, stay available after you open them, and update while you’re viewing the screen, with more reliable unread counts and fewer duplicates.
We’ve also improved translations across History, Insights, and logging screens to make OxyByte more consistent in your language.
The developer, Evolve Medical Systems, LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Contact Info
- User Content
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Health & Fitness
- Location
- Contact Info
- Usage Data
- Diagnostics
The developer indicated that this app supports the following accessibility features. Learn More
Information
- Seller
- Evolve Medical Systems, LLC
- Size
- 31.9 MB
- Category
- Medical
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later. - Apple Watch
Requires watchOS 11.0 or later.
- iPhone
- Languages
English and 6 more
- English, French, German, Italian, Japanese, Portuguese, Spanish
- Age Rating
16+
- 16+
- Frequent
Medical Treatment information
Contains
Advertising
Messaging and Chat
Health or Wellness Topics
- In-App Purchases
Yes
- SmartBP Premium Annual $29.99
- Premium Weekly $5.99
- Premium Ad-free Lifetime $59.99
- Premium Monthly $5.99
- Copyright
- ©Evolve Medical Systems LLC, All Rights Reserved.
