Sanso - Blood Oxygen Tracker

Daily SpO2 Log for Apple Watch

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Your Apple Watch has been measuring your blood oxygen (SpO2) every night. Most people never look at it. Sanso makes that data visible — automatically, every morning. --- What Sanso does --- Daily SpO2 Report Each morning, receive a summary of your previous night's blood oxygen levels — rated Normal, Check, or Alert. No manual tracking. Just wear your Watch. SpO2 Graph See how your blood oxygen changed throughout the night, hour by hour. Spot patterns you'd never notice from a single number. AI Insights Sanso sends your SpO2 stats to an AI and returns a plain-language explanation of what you're seeing. No medical background needed to understand your own data. SpO2 History Browse past reports by date. The longer you use Sanso, the clearer your personal baseline becomes. --- How it works --- Sanso reads SpO2 data already stored in Apple Health by your Apple Watch. No new device needed. No pairing required. Just install and your data is ready. Compatible with Apple Watch Series 6 and later (SpO2 sensor required). Apple Watch SE (1st and 2nd generation) is not supported. --- Important --- Sanso is a wellness app, not a medical device. It is not intended to diagnose, treat, or screen for any medical condition. If you notice concerning patterns in your data, please consult a healthcare professional. AI Insights use Anthropic's Claude API to explain your SpO2 statistics. No raw health data or personally identifiable information is transmitted. Your explicit consent is required before any data is sent. See our Privacy Policy for details. --- Requirements --- - iPhone with iOS 17 or later - Apple Health access - Apple Watch Series 6 or later (recommended for SpO2 data) --- Support --- Questions or feedback: cs_sanso@fabproducts.io --- Legal --- Terms of Use: https://sanso-tariteru.vercel.app/terms Privacy Policy: https://sanso-tariteru.vercel.app/privacy

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First English release. Sanso is now available globally with full English localization.

Version 1.1

The developer, Tomohito Fujita, 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 Linked to You

    The following data may be collected and linked to your identity:

    • Health & Fitness
    • Identifiers
    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • Tomohito Fujita
Size
  • 4.5 MB
Category
  • Health & Fitness
Compatibility
Requires iOS 26.2 or later.
  • iPhone
    Requires iOS 26.2 or later.
  • Mac
    Requires macOS 26.2 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 26.2 or later.
Languages
  • English and Japanese
Age Rating
9+
Copyright
  • © 2026 fab products
  • Developer Website
  • Privacy Policy