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NOOP Wiki

Your strap. Your data. Your machine. Local-first, no cloud.

NOOP is an independent, source-available, fully-offline companion app for WHOOP straps (4.0 and 5.0/MG), on macOS, Android, and iOS. It pairs directly with the strap over Bluetooth, keeps everything on your own device, and recomputes your three daily scores — Charge (how recovered and ready you are), Effort (the day's load), and Rest (last night's sleep) — along with HRV, all on a single 0–100 scale, locally. No account, no cloud, no subscription. Think of it as an energy economy: you wake with a Charge, spend it as Effort, and rebuild it with Rest. It reads your own device's data over your own Bluetooth; nothing is uploaded.

⚠️ NOOP is an independent, unofficial project — not affiliated with, endorsed by, or sponsored by WHOOP, Inc. "WHOOP" is a trademark of WHOOP, Inc., used nominatively only to identify the hardware NOOP works with. It works only with a device you own, and it is not a medical device. See Privacy and Security and the disclaimer below.

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🚀 New here? Start with these

• Installation — download and first launch (macOS Homebrew + Gatekeeper, Android .apk sideload, iOS .ipa via AltStore/SideStore)
• Getting Started — your first 10 minutes: install → pair → what fills in when
• Strap Support and Pairing — WHOOP 4.0 vs 5.0/MG, and the all-important pairing guide
• ⌚ WHOOP 5.0 / MG — what works & what's coming — read this first if you have a 5.0 or MG: the honest status of SpO₂, steps, recovery and sleep on the newer straps
• Keeping NOOP Updated — the in-app Check for updates, per-platform update routes, and why your data survives every update
• FAQ — quick answers to the most common questions (start here — most questions are covered)
• Troubleshooting — fixes for "no live HR", "history syncs but no data", macOS "damaged", and more

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📖 Tutorials — how to actually use it

Tutorial	What you'll learn
Getting Started	Install, pair, and a guided tour of every tab
Devices & Other Straps	Run multiple bands, switch the active one, or pair a Polar/Wahoo/Coospo strap
Tracking a Workout	Manual start/stop, live effort, HR zones
Understanding Charge, Effort & Rest	What your scores mean and how to act on them
Fitness Age & Vitality	Your Fitness Age, Vitality score and Body Age — and how to move them
Activity Cost	What each activity costs your next-morning Charge
Setting Up Automations	Double-tap actions, wear automations, smart alarm (Mac)
Breathing & Interval Training	HRV breathing biofeedback + the silent HIIT timer
Importing Your History	Bring your WHOOP + Apple Health data in
Importing Nutrition	Pull a Cronometer / MacroFactor CSV into your metrics
Mood and Mind	The daily mood check-in and what it correlates with
Apple Health via Shortcuts (iOS)	The HealthKit-free Health import path on iPhone
Setting Up the AI Coach	The optional, bring-your-own-key Coach
The Android Widget & Notifications	Home-screen widget + per-app notification buzzes
Reading Your Sleep	The hypnogram, stages, browsing past nights, and how sleep detection works
Estimated Steps (WHOOP 4.0)	How NOOP estimates steps on a 4.0, and calibrating them to your stride
Explore & Compare	Find patterns in your own data

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📚 Reference

• Features — the complete feature catalogue, every screen and capability
• How NOOP Works — the architecture, in plain language
• The Science — how Charge / Effort / Rest (and the HRV behind them) are computed, with the methods cited
• Privacy and Security — offline by design; the one opt-in network exception
• Protocol — how the BLE protocol was mapped (for the technically curious)

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🤝 Project & community

• Roadmap — what's next, and how community support drives it
• Contributing — file a report, send a PR, share a strap log, build from source
• Donations — keep this one-person project going (100% optional, crypto-only)
• Discussions — the Discussions tab is where ideas and the app's direction get shaped. Jump in.

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This wiki is maintained alongside the app and updated as NOOP evolves. Versioning follows SemVer. Current version: see the Releases page.