Everything you need to understand your body.
BLIP reads what Apple Health already collects and turns it into Recovery, Sleep, and Strain scores — no proprietary wearable required.
Recovery Score
Wake up to a personalized Recovery Score calculated from overnight HRV, resting heart rate, sleep quality, and more — compared against your 30-day personal baseline.
Sleep Score
Get a detailed Sleep Score every night based on duration, deep/REM/core stage breakdown, sleep efficiency, and awakenings.
Strain Score
Track your cumulative daily cardiovascular load across five heart rate zones. Know when you’ve pushed hard enough — and when to back off.
AI Health Coach
Chat with an AI wellness coach that knows your health data. Powered by Claude — only computed scores are shared, never raw data. Bring your own API key.
Built different. Built for you.
Designed from the ground up with privacy and simplicity in mind. No account required, no data collected, no subscription needed.
Works with Apple Watch
No proprietary wearable required. BLIP reads from the Apple Watch and HealthKit sources you already own.
Personal baseline
Scores are compared against your personal 30-day rolling average — not generic population data.
On-device processing
All health data processing happens entirely on your device. Raw data never leaves your iPhone.
Zero tracking
No analytics, no advertising, no third-party SDKs. BLIP contains zero external dependencies.
Long-term trends
Track 16 health metrics over weeks, months, and beyond. See how your recovery, sleep, and strain patterns evolve.
Completely free
No subscription, no in-app purchases, no hidden fees. BLIP is free to download and use.
Frequently asked questions
Have another question? Reach out to us.
What data does BLIP need?
BLIP reads heart rate, HRV, resting heart rate, sleep analysis, respiratory rate, SpO2, and wrist temperature from Apple Health. An Apple Watch is recommended for the best experience, but BLIP works with any HealthKit data source.
How is my Recovery Score calculated?
Your Recovery Score is a weighted combination of overnight HRV, resting heart rate, sleep quality, respiratory rate, SpO2, and wrist temperature — compared against your personal 30-day rolling baseline. Scores personalize over 14 days as BLIP builds your baseline.
What if I don’t have all the health metrics?
BLIP gracefully handles missing data by redistributing weights to the metrics that are available. HRV and resting heart rate are the minimum required for a Recovery Score.
Is my health data safe?
All health data processing happens entirely on your device. BLIP never transmits raw health data to any server or third party. There are zero analytics, tracking, or advertising SDKs in the app.
What about the AI Coach?
The AI Coach uses your own Anthropic API key. Your messages and aggregated health summaries (computed scores and trends) are sent for personalized coaching — but raw Apple Health data is never transmitted. You can delete your API key at any time.
Do I need an Apple Watch?
An Apple Watch is recommended for the richest data (HRV, sleep stages, wrist temperature), but BLIP works with any HealthKit data source including iPhone-only sleep tracking.
Is BLIP really free?
Yes, completely. No subscription, no in-app purchases, no hidden costs. The only optional expense is if you choose to use the AI Coach feature, which requires your own Anthropic API key.
What is the Strain Score?
Strain tracks your cumulative daily cardiovascular load across five heart rate zones. It uses a logarithmic scale from 0 to 21, so higher-intensity activity contributes exponentially more. Great for knowing when you’ve trained enough — or when you can push harder.
Is BLIP a medical device?
No. BLIP is not a medical device and is not intended to diagnose, treat, cure, or prevent any disease. The scores and insights provided are for informational and wellness purposes only.