Disclaimer

Last updated: October 15, 2026

日本語

Not a medical device

Sanso (酸素足りてる？, “the app”) is not a medical device. It is not for medical diagnosis, treatment, or prevention. The app shows blood oxygen (SpO2) recorded by Apple Watch. Its purpose is to offer a wellness observation.

Accuracy of the data

The SpO2 data shown in the app is measured by the Apple Watch sensor. The blood oxygen feature on Apple Watch is not a medical-grade pulse oximeter, and readings can include error. Fit, motion, and skin condition can affect accuracy.

If you have a health concern

If the app’s data or reports raise a health concern, talk with a clinic. Do not make a medical decision based only on information from the app.

Limitation of liability

fab products is not liable for any damage that comes from using the app. Information in the app is provided as is. We do not warrant fitness for a particular purpose, accuracy, or completeness.

Contact

fab products
Tomohito Fujita
Email: cs_sanso@fabproducts.io