How to keep a pressure log you can open in a spreadsheet

Why the usual way fails

Most weather apps show current conditions for your area, pulled from a station that may be far away, and they rarely let you download what they showed you last week. A real barometer on the wall gives you a reading but no history unless you copy it out yourself. Phone apps that do keep history often want an account, a location permission or a cloud sync before they will export anything. So the simple wish, my own readings in a file I control, ends up harder than it sounds. And a log built from a distant station tells you about that station, not about the room or valley you were actually in. If you move between places, the numbers stop matching what you felt.

How BaroGuard helps

BaroGuard keeps pressure history on the watch itself, using the watch's built-in barometer, with 24-hour, 7-day or 30-day windows. When you want the data out, you export the retained history as a CSV file and pick where to send it through the system share menu. Nothing leaves the watch until you start that export. There is no account, no location and no cloud sync in between, so the file you end up with is simply your own readings from your own wrist.

Step by step

1. Install BaroGuard on a Wear OS watch that has a built-in barometer.
2. Pick the history length that suits your log: 24 hours, 7 days or 30 days.
3. Calibrate against a trusted pressure reference if you want the numbers to line up with another source.
4. Open the app regularly; live pressure and history update while BaroGuard is open.
5. When you want the file, export the retained history as CSV and choose a share target.
6. Open the CSV in your spreadsheet and add your own notes next to the dates.

Tips

• Open the app at roughly the same times each day. History and live readings update while BaroGuard is open, so regular check-ins give you a more even log. A morning and an evening check are enough for most logs, and they make day-to-day changes easy to compare.
• Calibrate once against a known reading before you start a long log, so every row in the file is measured from the same reference.
• Export before the window runs out. If you keep 7 days of history, a weekly export means you never lose a stretch of readings, and you can paste each file into one master sheet. Name each file with the date range it covers so the master sheet stays in order.
• Treat the numbers as a personal record, not a lab measurement. The readings are approximate and vary with the watch hardware and the sensor. Trends over hours and days are where the log is most useful.

Questions