No account required. Just simple beautiful tracker for your health. Save your data to Apple Health or get your heart rate and blood oxygen from Apple Health. Please, note: you need to have an external device (such as pulse oximeter or smart watch) to get push notifications about the changes in your blood oxygen level or heart rate. Disclaimer: App measurements are just recommendations and can’t be used for diagnostics or medical purpose. Always seek a doctor's advice before making any medical decisions. Blood Oxygen App is free to download and use. If you upgrade to Blood Oxygen App Premium, we offer weekly, monthly & annual auto-renewing subscriptions. If you need to connect your family and sync between devices, we offer a Family Sync plan. If you need to connect your family and sync between devices, we offer a Family Sync plan. This plan includes all premium features + sync between 6 family members. Payment will be charged to the credit card connected to your iTunes Account when you confirm the initial subscription purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24-hours before the end of the current subscription period. Your account will be charged for renewal within 24-hours prior to the end of the current period, and the cost of the renewal will be identified. You may manage your subscription and auto-renewal may be turned off by going to your Account Settings after the purchase. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription, where applicable. Terms of use: https://aboutmeapps.com/terms-of-use/ Privacy policy: https://aboutmeapps.com/privacy-policy/