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Heart Rate, Oxygen Monitor Pro icon

Heart Rate, Oxygen Monitor Pro

Andy Hollings

Category: Medical
Sign in to watchView on the App Store (opens in a new tab)
Rankings updated

Current rank

#60 United States · Paid · Medical
Was
Not charting24 hours ago
Change
New entry
Best
#60in 24 hours
Full history

Price and ratings

Price
$2.99
Rating
—
Ratings
0United States

Versions

Released
23 Jan 2025
Last update
Version 1.2
Requires
iOS 18.0 or later

Details

Size
4.9 MB
Languages
1
Website
saxcompute.ltd (opens in a new tab)

First Responder is a heart rate and oxygen (SpO2) monitoring app for Apple Watch. It provides real-time monitoring of heart rate and oxygen saturation on one screen without sharing, tracking, or saving any personal data. The app is designed to prioritize user privacy, allowing it to be used on different users' devices without affecting personal health data. Key features include: Real-time heart rate and oxygen monitoring. No data tracking, saving, or sharing of any kind. Simple…

Countries1In 1 chart right now
Best rank now#60United States Paid · Medical
Ratings, 7 days—Needs a week of rating history
Longest chart run1 dayUnited States Paid · Medical

Competitors

Full chart

Top of Paid · Medical in United States. Heart Rate, Oxygen Monitor Pro is #60 there. Changes are over 7 days.

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Store listing

How the app presents itself on the App Store. Select a screenshot to open it full size.

Heart Rate, Oxygen Monitor Pro screenshot 1 of 2Heart Rate, Oxygen Monitor Pro screenshot 2 of 2

What's new

Version 1.2 · 1 Feb 2026 · 8 months ago

Latest Updates and Security Patches

Current rankings

Every chart this app is in right now, best position first.

Heart Rate, Oxygen Monitor Pro chart positions
ChartRank24 h7 daysBestDays on chart
United States· Paid · Medical · best #60 · 1 day#60New entryChange unknown#601

Rank history

Higher on the chart is better: #1 is at the top.

Sign in to see 30 days, 90 days and all history.

United States · Paid · Medical: best #60, latest #60, over 3 snapshots since 19 Oct.

United States · Paid · Medical: best #60, latest #60, over 3 snapshots since 19 Oct.

Ranking events

Entries, big moves, #1s and new versions we've recorded.

  1. Entered the Paid · Medical chart at #60United States

More from Andy Hollings

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