Satwell: SpO2 Oxygen Level Log

Satwell is a logbook for your fingertip pulse oximeter. Requires a separate fingertip pulse oximeter. Satwell does not measure, diagnose or treat. It does not use your phone's camera or sensors: you read the numbers on your own oximeter and log them here. WHY PEOPLE KEEP AN SPO2 LOG • Show your doctor how your oxygen level changes from day to day, not just today • Stop losing readings in a notebook or a spreadsheet • See which situations bring your numbers down LOG A READING IN ABOUT 10 SECONDS • Big SpO2 and pulse steppers, your last values already filled in • Tag the situation: resting, after activity, on waking, sleeping, on oxygen (with L/min), after inhaler • Optional temperature and a short note • Add a reading from earlier: pick the date and time • Edit or delete any reading, any time TRENDS THAT SHOW THE PATTERN • 7, 30 and 90-day graphs for SpO2 and pulse • Min, average and max for the period • Your own line (92% by default, or the number your care team gave you) and how many readings fell below it • Averages by situation, so you can compare resting with after activity DOCTOR REPORT (PDF) AND CSV • One PDF with the period summary, both graphs and every reading • Share it or save it to files before your appointment • Export your whole oxygen level log as CSV MADE FOR EVERY DAY • Family profiles: keep a log for a parent or partner on the same phone • Two gentle reminders a day, at times you choose • Home screen widget with your latest SpO2 and a quick Log button • Light and dark theme • No account, no sign-up. Your readings stay on your phone. • Every feature is included, supported by ads. WHO IT'S FOR People with COPD, asthma or other lung conditions, people recovering from an illness, travelers at high altitude, and caregivers who keep a blood oxygen diary for someone else. IMPORTANT Satwell is a record-keeping tool, not a medical device. It does not measure blood oxygen or heart rate and it gives no medical advice. Talk to your care team about your readings and follow the plan they gave you.

First release: log SpO2 and pulse from your fingertip oximeter in about 10 seconds, see 7, 30 and 90-day trends, and share a doctor report PDF.