Sedentary heart rate
Recent sedentary samples make the last several hours visible without folding movement into the resting signal.
Apple Watch + resting heart rate
rhr/spark
Your resting heart rate. Two sources. No blending. On your wrist.
RHRSpark puts your Resting Heart Rate on your Apple Watch face. Short windows use sedentary HealthKit samples. Longer windows show Apple's daily RHR directly.
Built for transparent resting heart-rate trends
10
Complications
Multiple watch-face formats.
4
Windows
Short and longer-range views.
2
Sources
Sedentary HR plus Apple daily RHR.
0
Hidden Algorithms
No interpretation.
Official app
RHRSpark
App Store ID
6762872980
Current version
1.0.4
Privacy
No account. No telemetry.
Show your work
The math is on the label.
Every complication in the gallery prints its own recipe in plain type on the screen where you install it. This is the 24-hour sedentary complication's label, straight from the app:
Big Number = avg(non-empty 5m buckets
from last 2h using only heartRate samples
where motionContext == .sedentary);
sparkline = avg sedentary HR per 1h bucket
over 24h; empty buckets = dashes.If a number is going to sit on your watch face all day, you should not have to guess how it was made.
The instrument
Calm enough to live beside the clock.
RHRSpark is built for repeated glances. The line shows the shape. The large value keeps the current signal legible. Dashes show where qualifying data is not available instead of pretending the gap is real signal.
As a resting heart rate complication for Apple Watch, it does one narrow thing well: it keeps sedentary samples and Apple's daily RHR on the face, separate and named.
Sedentary
Short windows focus on samples marked sedentary, so movement does
not quietly masquerade as rest.
Apple RHR
Longer windows use Apple's daily resting heart-rate metric
directly, clearly labeled as Apple's source.
Gaps
When there is no qualifying data, the line shows a dash instead
of filling the space with a guess.
Two sources, four windows
Short-term texture and long-term baseline stay separate.
Daily sedentary shape
The 24-hour view helps you notice how rest, work, sleep, and movement show up across the day.
Apple's daily RHR
A week of Apple's own resting heart-rate values gives the short-term line a steadier baseline.
Longer RHR arc
The 30-day view shows drift and baseline movement without inventing a new hidden metric.
Design philosophy
Transparency is the feature.
"I wanted to see the actual shape of my resting heart rate throughout the day. When the line dips, I know why. When there is a gap, I know I was moving."
— developer
Who it is for
People who want the numbers without a verdict.
The self-tracker
You already notice how sleep, training, travel, and long days move resting heart rate. You want that signal closer to the surface.
The transparency advocate
You want to know what counted, what did not, and whether you are seeing sedentary samples or Apple's daily RHR.
The HRV companion user
Resting heart rate complements HRV naturally, broadening the picture without one metric trying to explain the other.
The plain-numbers type
You do not need encouragement, warnings, or congratulation. You need the trend where you can see it.
Simple pricing
Start free. Unlock Pro once.
Free to download and try with three 24-hour complications. Pro unlocks all 10 complications across four time windows. No subscriptions, no accounts.
