BreathFriend
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See your breathing session alongside your HRV.

Review breathing sessions and optional pre- and post-session HRV information in BreathFriend. Measurement needs a supported device or data source.

Get BreathFriend on Google Play Find your starting point

For Android phones and compatible Wear OS watches.

A place to start

Choose a pace you can follow comfortably.

Try the browser breathing timer
  1. Check the HRV sources supported by your phone or watch and the access available in the app.
  2. If supported, follow the instructions for a reading around your breathing session.
  3. Review the session and readings over time. Treat missing or unusual readings with care.
BreathFriend optional HRV and session information on Android
BreathFriend optional HRV and session information on Android

Add context to a breathing routine

BreathFriend can show optional HRV information around supported sessions, alongside your practice history. This gives you another way to review a session. A higher reading is not a guaranteed result, and a single change does not explain how you feel.

Check what your device can measure

HRV support depends on the sensor, source, permissions and app configuration. Health Connect availability does not mean every connected device supplies the data needed for every feature. Check the source options inside BreathFriend before relying on a measurement.

Keep the numbers in perspective

Readings vary with measurement conditions and many factors outside the breathing session. The app provides wellness information, not a diagnosis or a recovery clearance for exercise. You can use the breathing guide even when HRV measurement is unavailable.

See what changed without turning every breath into a score.

Built around each session

BreathFriend's HRV workflow surrounds the guided session: measure before, practice, measure again and review the difference. The signal remains optional so the breathing experience still works without it.

  • Pre-session baseline HRV measurement.
  • Post-session HRV measurement and change.
  • Recovery trends across repeated sessions.
  • Wear OS recovery tiles and Health Connect support where available.
BreathFriend HRV recovery dashboard with baseline and trend analysis

What BreathFriend measures and shows

On supported devices and with appropriate permissions, BreathFriend captures pre-session and post-session HRV, presents the change after the exercise and builds longer-term recovery trends. Availability depends on the watch, sensor support, feature access and data permissions.

BreathFriend Health Connect onboarding screen

Health Connect integration

Health Connect can provide a shared Android data layer for supported health information. BreathFriend uses the integration only where the app and device support the relevant flow.

How this differs from live HRV biofeedback

BreathFriend's main recovery model compares measurements around a completed session; it does not claim continuous clinical beat-to-beat coaching during every breath. Apps built for live biofeedback may require compatible external sensors and answer a different question.

What HRV cannot tell you by itself

A single HRV value is not a diagnosis, and a higher number is not automatically better in every context. Sleep, activity, illness, stress, device fit and measurement timing can all affect readings.

Important limitationBreathFriend is not a medical device. Do not use its recovery views to diagnose a condition or make treatment decisions.

To focus on the breathing experience itself, read the Wear OS guide or compare HRV breathing apps.

Continue exploring.

Related BreathFriend guides

Wear OS guided breathing

See the complete watch-first session flow.

Read guide →

Best HRV breathing apps

Compare built-in recovery tracking with live external-sensor biofeedback.

Read guide →

About BreathFriend

Read product scope and safety language.

Read guide →

Recovery snapshots, heart-rate context and live HRV biofeedback are different products.

Understand the data model

The comparison pages state which signal an app actually uses so you can avoid buying a metric that does not match your goal.

Best HRV breathing apps

See why BreathFriend leads for all-in-one Wear OS breathing and recovery tracking.

Compare HRV apps →

BreathFriend vs Vayu

Compare pre/post-session HRV recovery with live heart-rate context.

Read the head-to-head →

Free breathing timer

Try the pacing itself before deciding whether biometric context adds value.

Try a pattern →

Start guided breathing from your wrist.

Install BreathFriend on Android and a compatible Wear OS watch.

Get BreathFriend on Google Play →

Before you start

Is HRV measurement available on every watch?

No. It requires a supported device or source, appropriate permissions and the relevant feature access.

Will a session increase my HRV?

No increase is guaranteed. HRV can vary between readings, and a change does not prove that the breathing session caused it.

Can I use the app without HRV?

Yes. Guided breathing is available separately from optional measurement features.

Set up your next breathing session.

Choose your rhythm and the cues you want to follow.

Get BreathFriend on Google Play

Feature access and Pro options are explained in the app.