StrapLog HRV Downloads & RevenueStrapLog HRV · App Store
18 days old
StrapLog HRV is #73 in Health & Fitness Paid in United States and charting in 1 of 30 countries we track.
Updated 8 Nov 2026 · rankings refresh through the day
DeveloperEnsembio, Inc.
CategoryHealth & Fitness
Price0.99 USD
Released
Rating★ 0.0 (0)
Version1.1
Age rating4+
First seen by us
5 Nov 2026
5 Nov 2026Full timeline · 3 events
- 🆕StrapLog HRV first spotted by AppInsider#28 in Top Paid · Health & Fitness · United States
- 📦StrapLog HRV version 1.1• Charts scroll: drag back through a recording, and tap a marker on a recording's page to jump to it.
• The breathing pacer works any time, with or without a recording.
• Sleep recordings show the night's lowest heart rate live.
• Apple Watch: StrapLog stays on screen, dimmed, when you lower your wrist on an Always On watch.
• An illustrated guide, with a new chapter on analyzing your recordings with Claude skills.… more - 🆕StrapLog HRV released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
0.0 ★
0 ratings
Measured
Best rank now
#73
Health & Fitness PaidMeasured
StrapLog HRV on the App Store
App details
App ID
6824288032
Publisher
Ensembio, Inc
On the store since
Oct 2026
Under a year
Minimum OS
iOS 18.0+
iPhone XS and later
Devices
iPhone · iPad · Watch
Content rating
4+
Languages
1
EN
Size
28 MB
Also listed in
Sports
Where StrapLog HRV's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| United States | Health & FitnessPaid | #73 |
Apps near StrapLog HRV on the chart
Health & Fitness Paid, around #73.
Ratings
App Store, worldwide.
Rating
0.0 ★
0 ratings
Measured
Ratings
0
Measured
About StrapLog HRV
StrapLog records every heartbeat from a chest-strap heart-rate sensor and keeps it safe on your iPhone. It shows heart rate and heart-rate variability live, saves each recording as a file you own, and lets you mark moments as they happen.
StrapLog requires a Polar H10-compatible heart-rate sensor. Watches and wrist sensors do not connect.
BEAT BY BEAT
• Every RR interval the strap measures, stored as it arrives, so even a crash or a dead battery loses almost nothing.
• Live heart rate, RMSSD and DFA alpha 1, with artifact percentage so you know how clean the data is.
• Charts of HR, alpha 1 and RR that you can pinch from one minute to the whole session, and drag back through to any moment.
SLEEP AND MORNING READINGS
• Overnight recordings that stop themselves at your wake time, after a 5-minute resting reading if you are still lying down.
• The strap's motion sensor tells lying from upright, so the recording ends when you get up.
• The night's lowest heart rate so far, live on the recording screen.
TRAINING ZONES
• DFA alpha 1 refreshed every 20 seconds and coloured by intensity band, for finding your aerobic and anaerobic thresholds on a walk, ride or treadmill.
• A breathing pacer for slow-breathing practice, any time, recording or not.
MARKERS
• Tap to stamp "lights out", "start stage 3" or "coffee" into the recording, from the app, the Lock Screen, the Dynamic Island, your Apple Watch or Siri.
APPLE WATCH
• See heart rate and alpha 1 on your wrist, add markers, and start or stop the recording on your iPhone. Complications for the watch face, and an Always On view when you lower your wrist.
YOUR DATA, YOUR FILES
• Each recording is a single SQLite file in iCloud Drive or On My iPhone. Open it in Python, R or any SQLite tool.
• No account, no server, no analytics. Nothing leaves your devices unless you share it.
ANALYZE IT
• Free, open-source skills for Claude Code read the files directly: overnight HRV reports, resting HRV against a 7-day baseline, workout summaries, and thresholds from a ramp test. The in-app guide shows how to install them.
• A Python package does the same from your own scripts.
StrapLog is a personal measurement tool, not a medical device. It does not diagnose, treat or prevent any condition.
StrapLog requires a Polar H10-compatible heart-rate sensor. Watches and wrist sensors do not connect.
BEAT BY BEAT
• Every RR interval the strap measures, stored as it arrives, so even a crash or a dead battery loses almost nothing.
• Live heart rate, RMSSD and DFA alpha 1, with artifact percentage so you know how clean the data is.
• Charts of HR, alpha 1 and RR that you can pinch from one minute to the whole session, and drag back through to any moment.
SLEEP AND MORNING READINGS
• Overnight recordings that stop themselves at your wake time, after a 5-minute resting reading if you are still lying down.
• The strap's motion sensor tells lying from upright, so the recording ends when you get up.
• The night's lowest heart rate so far, live on the recording screen.
TRAINING ZONES
• DFA alpha 1 refreshed every 20 seconds and coloured by intensity band, for finding your aerobic and anaerobic thresholds on a walk, ride or treadmill.
• A breathing pacer for slow-breathing practice, any time, recording or not.
MARKERS
• Tap to stamp "lights out", "start stage 3" or "coffee" into the recording, from the app, the Lock Screen, the Dynamic Island, your Apple Watch or Siri.
APPLE WATCH
• See heart rate and alpha 1 on your wrist, add markers, and start or stop the recording on your iPhone. Complications for the watch face, and an Always On view when you lower your wrist.
YOUR DATA, YOUR FILES
• Each recording is a single SQLite file in iCloud Drive or On My iPhone. Open it in Python, R or any SQLite tool.
• No account, no server, no analytics. Nothing leaves your devices unless you share it.
ANALYZE IT
• Free, open-source skills for Claude Code read the files directly: overnight HRV reports, resting HRV against a 7-day baseline, workout summaries, and thresholds from a ramp test. The in-app guide shows how to install them.
• A Python package does the same from your own scripts.
StrapLog is a personal measurement tool, not a medical device. It does not diagnose, treat or prevent any condition.
Latest updates
1.1
• Charts scroll: drag back through a recording, and tap a marker on a recording's page to jump to it.
• The breathing pacer works any time, with or without a recording.
• Sleep recordings show the night's lowest heart rate live.
• Apple Watch: StrapLog stays on screen, dimmed, when you lower your wrist on an Always On watch.
• An illustrated guide, with a new chapter on analyzing your recordings with Claude skills.