01
No subscription.
Buy your band once. Never pay anyone again. Phreep is free; Phreep Pro is a one-time unlock for the deep features.
YOUR BAND. YOUR DATA.
Run your Whoop 5
without the cloud.
An offline Android companion app that reads your band over BLE, computes recovery, strain and sleep on-device, and never sends a byte to anyone else.
Public beta · Android 8+ · Free, with optional one-time Pro unlock
02
No cloud.
Every byte your band streams stays on your phone. No accounts, no servers, no telemetry, no third-party processors.
03
No compromise.
Recovery, strain, sleep stages, HRV, ECG, BioAge — all the metrics, computed locally with the same algorithms.
WHAT'S INSIDE
Restoration
HRV-driven recovery score with 14-day baselines, computed from beat-to-beat RR intervals.
Day strain
HR-zone-weighted TRIMP scoring updated live as you wear the band.
Sleep stages
Light / Deep / REM / Awake hypnogram from accelerometer + HR, plus sleep performance and consistency.
BioAge
Cardiovascular fitness age via Jackson 1990 non-exercise VO₂max + Wisløff RHR adjustment.
ECG
30-second rhythm strips with on-device HR analysis. PDF export ready for your doctor.
Smart alarm
Wakes you in your light-sleep window, on-band, even with your phone in airplane mode.
Bulk sync
Drains the band's 14-day buffer in seconds. Pulls every heartbeat you've banked since you last opened the app.
Health Connect
Optional one-tap sync to Android's Health Connect so your HR/HRV/RHR/Sleep show up in Fit, Samsung Health, etc.
PRIVACY
Your band is a sensor. Your phone is the brain.
Nothing else needs to know.
Phreep does not have servers. We literally cannot see your data — not because we promise we won't, but because there's no path for it to leave your device. Read the privacy policy if you want the details in writing.
FAQ
Is this Whoop's app?
No. Phreep is an independent third-party app that talks to the band over the standard Bluetooth protocol. Whoop's official app is something else entirely.
Do I need a Whoop subscription?
You'll need to have one once to set the band up via the Whoop app. After that, you can cancel and use Phreep instead.
What's "Phreep Pro"?
A one-time $9.99 unlock for the heavier features (extended history, raw PPG export, ECG PDF export, Health Connect sync). The free version covers the daily-use loop.
Will it work on iPhone?
Not yet. iOS BLE restrictions make the offline approach harder; we're investigating.
What if my band breaks or I switch to a Garmin?
Your data exports to a single SQLite file you fully control. You can also push to Health Connect at any time.
Where do I report a bug?
Email support@phreep.com. We read every message.
Get the beta.
Phreep is in private beta. Join the waitlist for an invite when the public Play Store listing goes live.
EMAIL BETA@PHREEP.COM →