I want to set out clearly where NOOP stands today, what you should expect from it, and what it is going to take to get this where we all want it to go. If you are new here, or you have just downloaded it expecting a finished product, please read this properly. It matters, and it will save us both a lot of frustration.

What NOOP is

NOOP is a free, open, on-device companion for your WHOOP and a growing range of other straps, watches and bands. Everything runs locally on your phone or your Mac. There is no account, no cloud, no subscription, no telemetry, and nothing you record ever leaves your device. It is built in the open by a small community, and every line of it is there for you to read, use, and improve.

That is the heart of it, and that part will never change.

What NOOP is not, yet

It is not a finished product. It is not a commercial app. It is not a polished, guaranteed, set-and-forget replacement for WHOOP, Oura or Garmin that you can lean on without a second thought. It does not come with a support desk, an uptime promise, or a roadmap that lands on a fixed date.

If what you need today is reliability you never have to think about, NOOP is not that yet. I believe it becomes that. It is not that right now, and it would be wrong of me to let you think otherwise.

Where we actually are: early, active development

NOOP is being built in real time. That is genuinely difficult, slow work, and it means the app is in constant motion. Setting your expectations straight here is the whole point of this post.

You should expect:

• 🔄 Frequent updates, sometimes several in a single day.
• 🐞 Real bugs. Things that work today and break tomorrow, then get fixed the day after.
• ↩️ The occasional regression, where a fix for one thing briefly unsettles another.
• 🧪 Features clearly labelled experimental, because they are not proven yet and we will not pretend they are.
• 📐 Numbers and screens that change shape as we learn what is actually correct.
• 🐢 Slow, deliberate progress on the hardest parts, because rushing them produces data you cannot trust.

None of that is the project failing. That is what building something this ambitious, in the open, actually looks like from the inside. If you are comfortable with that, you are in exactly the right place. If you are not, that is entirely fair, and it may be worth checking back in a few months when more of it has settled.

The work going on right now

This is a deliberate, organised effort, not something thrown together and abandoned:

• 🔋 A dedicated battery-testing group is being set up, because strap battery behaviour is subtle and only careful testing across real devices over real time will get it right.
• 🎨 A UI and UX testing group, to make sure the app does not merely work, but feels right to live with every single day.
• 😴 Sustained work on the sleep algorithms, which is some of the most demanding work in the entire app. Getting sleep staging genuinely accurate, from raw signals, on your device, is hard, and we are not going to fake it to look finished.

These things take time. I would far rather move at the pace that gets them right than ship something that looks impressive and quietly misleads you about your own body. That is a line I will not cross.

The orchestra, and why this takes time

The clearest way I can describe my role is this: I am stood at the front of an orchestra with the baton. The musicians are extraordinary, contributors writing code, people submitting strap logs, people testing corners I could never cover on my own. But you do not pull a full orchestra into a finished symphony in a week. We are in rehearsal. Some sections are tight. Some are still finding their timing. My job is holding the whole thing together and pointed in one direction while every part comes up to standard.

It will not all sound right yet. That is the nature of rehearsal, not a fault in the players. The performance is coming, and it will be worth the wait, but the wait is real and I am not going to pretend it away.

How NOOP actually gets built: GitHub is the engine

This is the part I most need you to take on board. NOOP does not improve because one person codes in isolation. It improves because of you, through GitHub. There are three ways to be part of that, and each one genuinely shapes the app.

1. Report bugs, properly. 🐛 Not in a passing Reddit comment, and not as a vague "it is laggy". File it on GitHub Issues, with a strap log attached. There is a button in the app to capture one, and the template walks you through exactly what we need. I cannot fix what I cannot see. A clear report with a log is the single most valuable thing you can give this project, and a large share of every release comes directly from one person taking a few minutes to file one well. The dashboard performance fix that just shipped came from precisely that: one person, one clear report, one strap log. That is the entire loop, and it works.
➡️ Report a bug · All open issues · How to grab a strap log and report it

2. Send a pull request. 🔀 A great deal of what is in NOOP came from the community writing code. We review every single one ourselves, verify it, and reimplement it cleanly rather than merging blindly, but the ideas and the fixes are yours. If you can code, this is the most direct way to build the thing you wish existed.
➡️ Open pull requests · Contributing guide · Roadmap and where we need help

3. Take part in the wider effort. 💬 The testing groups, the discussion, the feedback, it all lives in the community and it all feeds straight back into what gets built next.
➡️ Discord · r/NOOPApp

And if you are here simply to download the app, please understand why it lives on GitHub in the first place. That is not an app-store listing. It is a development repository. You are taking a work-in-progress out of the exact place we are actively building it. That is a good arrangement, free, open, and yours, but the understanding that comes with it is firm: you are an early tester in a build that changes constantly, not a customer buying a finished product off a shelf. Treating it as the latter is where the disappointment comes from, and I would rather you treat it as what it is.

Where this is heading

The destination has not moved. NOOP is becoming a genuine, reliable, on-device alternative to the subscription wearable apps, one that respects your data completely and costs you nothing. We are not there yet. We get there by doing the hard parts properly rather than quickly, and by everyone who uses it taking part in making it better.

That is the deal. It is a serious project with a serious goal, and it is going to take time, patience, and all of us pulling in the same direction.

Everything in one place

What I am asking of you

Be patient. Be early. Use it knowing exactly what it is. When something breaks, report it properly, with a log, on GitHub. If you can write code, send a pull request. Every issue you raise carefully is a problem solved for the next person, and every contribution moves the whole thing forward.

This is not a finished app, and I am not going to dress it up as one. It is a serious, long-term effort to build something genuinely worth having, in the open, for free, and it is going to take real time and real commitment from all of us. If you are here for that, you are exactly who this is for. Thank you for being part of it while we build it properly.

Should my whoop and phone be connected all the time for NOOP to work? I want to go out for a run without carrying my phone

Yes I am , but in INR. I’m ready to pay a small amount as I’m struggling to set it up on ios or android.

I have a whoop 5.0. And I’m just not understanding how to set it up.

I’m facing issues over and over again.

Just wanted to mention I've been rocking my whoop 5 connected to both apps at the same time. Haven't had any problems except that sleep on Noop hasn't been as accurate. Everything else is fairly close.

Could be nice if i could sync my data to a home server so i have backups and have my data ''safe''

Hi, if i sideload Noop to my iphone then i need to do it every 7 days because of Apple. But if i get it on MacOS it would work basicly forever without re-downloading every 7 days.

But if i should re-download that often then the stats and sleep wouldnt even calibrate properly before i even need to download the app again.

So is it possible to use MacOS for sync and then the iPhone for viewing the stats or is there a kind of fix?

I’m curious what sort of battery life other WHOOP 5.0 users are seeing when using NOOP.

I charged mine to 100% on Monday at 8:00 PM, and as of Thursday around 5:00 PM it’s already down to 50%. At that rate, I’m expecting roughly 6–7 days of battery life, which is quite a bit lower than the advertised 14 days.

That said, I may not be a typical user because I have:

• Continuous HRV enabled (I wanted to collect as much data as possible) • Deep Packets (experimental) enabled • Continuous syncing through NOOP

For anyone else running a WHOOP 5.0 with NOOP:

• What battery life are you getting?
• Are you using Continuous HRV?
• Do you have Deep Packets enabled?
• Have you noticed a significant battery-life difference compared with the official WHOOP app?

Just trying to figure out whether ~6–7 days is normal with these settings or whether something might be wrong with my setup.

Thanks!

With the Amazon Prime Days the whoop is on sale for 219 euros, I wonder if I try the Whoop now for a year and then cancel my subscription. Can I keep the device and still use it with a third party app like Bevel?

And does it have a wheelchair mode like the Garmin watches have?

As the titles says , I’m noob. I’m a finance/ accounts guy and I have no clue how to install it any help would be highly appreciated.

I have a windows laptop and IPhone.

Love your project. I really want Noop app to support Fitbit air in the future.

Hey everyone,

Is anyone else having issues installing/updating to NOOP 7.2.0 on iOS (latest stable)?

I’m trying to install the update the same way as always, using AltStore, but this time it just crashes AltStore during the update process. The app doesn’t update and there’s no error message shown, so I’m not really sure what’s going wrong.

Previous updates worked fine for me with the same setup, so it seems like something may be broken specifically with the 7.2.0 IPA/build.

Has anyone managed to install 7.2.0 successfully on iOS via AltStore? Or is there a known workaround?

Short version: if you own a WHOOP, the band is dead weight without a ~$199–$359/year membership, and all your data lives on their cloud. NOOP is a free, open-source app that talks to your WHOOP directly over Bluetooth and gives you recovery, strain, sleep and a lot more — on your own device, no account, no cloud, no subscription. Your data never leaves your phone or Mac.

It's independent and unofficial (not affiliated with WHOOP). It's been going a while — 171 releases, 10,000+ downloads, 1,600+ GitHub stars — and v4 is the biggest update yet.

⭐ Standout features (the stuff that makes people switch)

• No subscription, ever. Every feature unlocked, no account, no nag. Free forever.
• 100% offline & private. No cloud, no sign-up — your raw heart-rate and sleep data physically stay on your device. You can export all of it whenever you want.
• It runs on a Mac. WHOOP doesn't even make a Mac app. NOOP gives you a full desktop dashboard and a menu-bar live-HR readout.
• NEW in v4 — a longevity engine: your Fitness Age, a Vitality score (0–100) and a Body Age in years, computed from data you already have.
• Your strap can buzz back. NOOP uses the band's own haptic motor for HRV breathing biofeedback (it paces your breath with felt cues) and a silent HIIT interval timer (buzzes every work/rest transition — train hands-free, no screen).
• Turn your strap into a remote. Double-tap the band to lock your Mac, mark a moment, or run any macOS Shortcut.
• Bring your WHOOP history across in ~1 minute by importing your official export — then it's yours.

🆕 What v4 adds — the "Age & Longevity" engine

Three new on-device numbers, all framed honestly as wellness estimates (never a clinical age):

• 🫀 Fitness Age — how fit your heart is vs your actual age, from resting HR + recent activity, built on the published Nes/HUNT VO₂max research. A "How accurate is this?" panel shows exactly which inputs went in.
• ✨ Vitality (0–100) + Body Age — your longevity read, the way WHOOP's "Healthspan" works: resting HR, sleep duration + regularity, HRV and activity each weighed against published all-cause-mortality research. It even names the one habit helping you most and the one holding you back.
• 🏃 Optional VO₂max estimate — add a waist measurement and NOOP shows it alongside your Fitness Age.

(v4.0.1, out today, also makes Today's Effort update live through the day instead of lagging, and fixes a sleep-time-edit bug.)

📋 The full feature list

Daily scores — NOOP's own, all out of 100 to go head-to-head with WHOOP:

• Charge (recovery) from HRV / resting HR / skin temperature / sleep quality
• Effort (strain), now computed live as your day builds
• Rest (sleep) composite, with full sleep staging

The screens:

• Today — home dashboard: recovery ring, a "today's synthesis" insight, stat tiles (recovery, strain, sleep, HRV, RHR, SpO₂, respiratory, steps, weight, calories) each with a 14-day sparkline, live strap battery %, HR trend and recent workouts.
• Readiness — a "should you push today?" call built on real sports science: HRV vs baseline (Plews/Buchheit), resting-HR drift (Lamberts), respiratory drift, training-load balance (acute:chronic, Gabbett) and monotony (Foster) → one headline (Primed / Balanced / Strained / Run down) with the reasons.
• Sleep — hypnogram, stage breakdown, efficiency, resting HR & HRV from the on-device sleep stager. Browse back through past nights, and edit bed/wake times.
• Stress — day-level autonomic-load view. Health — full biometric overview (HR, HRV, SpO₂, skin temp, respiratory rate). Trends — long-range trends across everything.
• Workouts — detected sessions with strain + HR detail, plus GPS workout tracking with route map, HR zones and a post-session summary. Live — real-time HR/frame stream.
• Breathe — HRV haptic breathing biofeedback with pre/post HRV outcome (Relax 4-6, Coherence 5.5, Box 4-4). Intervals — silent haptic HIIT timer.
• Mind — a daily mood check-in correlated against your own recovery/sleep/HRV (on-device, non-clinical).
• Explore / Compare / Insights — interrogate any metric over time, plot two together, and surface correlations from your own data.
• Data Sources — one-tap import of a WHOOP CSV export, an Apple Health export, or a nutrition CSV (Cronometer / MacroFactor).
• Automations — double-tap → Mac action/Shortcut, lock-on-wrist-off, HR-zone haptic coaching, and a smart alarm that arms the strap's own firmware to buzz you awake even if the app's closed.
• Coach — an optional AI coach you can ask about your data in plain language. It's off until you add your own key (Anthropic, OpenAI, or any OpenAI-compatible endpoint including a fully local model via Ollama / LM Studio) — and it only ever sends a short text summary + your question, never raw data. With a local model the conversation never leaves your machine.
• Settings — profile, step calibration, units, the in-app What's new changelog, and an opt-in Experimental section.

Also in the box: Apple Health + Health Connect (reads in, writes your workouts back out), steps, strap battery alerts, rename your strap, a live-HR widget / Dynamic Island / Live Activity, raw sensor CSV export, a menu-bar extra on Mac, a first-run onboarding wizard, and a built-in scoring guide that explains every number and how it differs from WHOOP's.

📱 What devices are supported

Platforms — one feature set across all three:

• macOS (13+) — full app + menu-bar extra.
• Android (8+) — full app, install the APK.
• iPhone / iPad — sideload the unsigned .ipa with AltStore / SideStore and sign it with your own free Apple ID (no App Store, no developer account). Newer and a little less battle-tested than Mac/Android.

Straps:

• WHOOP 4.0 — ✅ the fully supported path: live HR, recovery, strain, sleep, full history offload.
• WHOOP 5.0 / MG — 🧪 live heart rate works on real hardware; deeper overnight metrics (recovery, strain, sleep) are still being reverse-engineered, and the app tells you straight which ones aren't ready yet. (Note: pairing a 5/MG means closing the official WHOOP app first so it isn't holding the Bluetooth bond — there's a guide in-app.)
• Multiple WHOOPs — manage several straps, switch between them, and see what each band can do.
• Generic Bluetooth heart-rate straps (Polar and friends) — early support, with a Devices screen and guided pairing wizards.

💡 Why it beats the official setup

📰 As featured in

AOL · Yahoo · Android Authority · TechRadar · BGR · Android Central · Android Police · Notebookcheck · Trusted Reviews

⬇️ Download (free)

→ https://github.com/NoopApp/noop/releases/latest

• macOS: the .zip, or brew install --cask noopapp/noop/noop
• iPhone/iPad: the .ipa (sideload + sign with your free Apple ID)
• Android: the .apk

Questions, setup help & release news → r/NOOPApp.

♥ Keeping NOOP alive

Full honesty: NOOP is free forever, every feature unlocked, no nag — and it's built and maintained by one person, out of pocket. Keeping up with WHOOP's hardware and firmware takes real time and real test gear. The project continues if the people who use it help fund it.

Donations are crypto-only, on purpose — it keeps the project (and you) anonymous, no names attached. If even a small fraction of those 10,000+ downloads chipped in $50 (a fraction of one year's WHOOP membership), NOOP's future is secure for a long time:

• BTC: bc1qn2gkl7wslwpws06mvazjn2uu689zlkv7kg3kf5
• ETH: 0xd64D508b531c4b1297Ca4023C774e0E97aA67B7F

New to crypto? Cash App / Coinbase / Kraken will have you sending in ~2 minutes. Thank you for keeping an independent, no-subscription project alive. 🙏

A few weeks ago this was a wild idea: what if your WHOOP just worked, forever, for free, no subscription, your data living on your own devices and going precisely nowhere else?

That idea has gone off like a rocket, and it's because of you. Here's where we are. Buckle up.

⭐ Nearly 2,000 stars on GitHub
🍴 777 forks
📦 220 releases
🚀 7 major versions, v1.0 all the way to v7.0.3
🛠 312 pull requests
🐛 358 issues hunted down
👥 161 people who've written code, filed bugs or shaped a feature
📝 Over 230,000 lines of Swift and Kotlin
📱 Three platforms: iPhone, Mac, Android
💬 1,100+ of you on Reddit, hundreds more on Discord

And nearly all of that happened in a matter of weeks. No company. No roadmap meetings. Just a community that decided a good piece of hardware shouldn't be held hostage.

Here's the bit that actually fires me up. A WHOOP without a subscription is a paperweight. Stop paying and the band on your wrist, a perfectly good sensor that cost real money to make, goes dark. Multiply that by everyone who's ever cancelled and that's a mountain of working tech heading for a drawer or a landfill.

NOOP says no. Your strap keeps working. Your data stays on your phone. No cloud, no fees, no "upgrade or lose access." We're not just building an app, we're keeping kit alive that the industry would happily have you bin and re-buy. That's less e-waste, less money out of your pocket, and a small middle finger to planned obsolescence. Own your data. Keep your gear. Waste nothing.

And look what we built together: WHOOP 4 and 5/MG support, Charge / Effort / Rest scores, Fitness Age, a Vitality score, hydration tracking, automatic workout detection, GPS workouts, a rebuilt sleep stager with editable nights, skin temp and respiratory trends, a bring-your-own-key AI coach, support for straps way beyond WHOOP, light and dark themes, full data export, and a dozen more, all of it offline, all of it yours.

But an app is just code. The soul of this is people. So here they are, the wall of legends who've sent a PR, cracked a bug, pasted a strap log at 3am, or just told us exactly what was broken:

adamstefanik, ahmedelfayoume, alexsas00, andreasc1, artur01-code, asemfahad, Brechard, cbarrado, claypilat, Copperknox, danielrossdanielross, darylbleach, dev-goalz, Dharanesh07, DieserLiton, Divad27, don86nl, eltomato89, Eph00n, Extazian, exzanimo, fkmooney, frazzle28, FrostDev7, gingerbeardman, hkuehl, iamkishann, iHateSubscriptions, jamartif, JanLoebel, jannikl-punkt, jhjosephcho, joalavedra, JordanBouchier, Joshsil03, julian-ben, julienranc, kavemang, khalilkm01, maddognik, marceauboul, MasterARK4, Meriquium, Mindfulpaths, mornepousse, MrL0, muthuganeshp, mvanhorn, nhe, NoahMcE, oregontrailbison, PatrickClipa25, phsycology, pilleuspulcher-blip, pranavfrost69, psifertex, rayg8, RazvanRex, RichrdJ, robin-liquidium, rr-allin, ruedigermunz, ryanbr, sactyr, sebastianwoo, spasypaddy, stnnnts, subscriptiondestroyer, sudden-break, sunny-noop, tajchert, TasadduqB, tavelli, Te1man, tigercraft4, Twenzo-cell, ujix, umarXBT, virajshoor, wagenknecht, witchykinkajou

...and the hundreds more of you in the threads: the testers, the lurkers, the "hey this would be cool if" crew. Every single one of you moved this forward.

This is a mission now, not a project. We're only just getting warmed up. ❤️

So have bought myself a whoop 4 second hand with the intention of running this alongside the whoop 5 to compare the info.

Whoop 5 running through the whoop app

Whoop 4 running through the Noop app

Both loaded on to my S26 Ultra phone, so far no issues with compatibility, will update if this becomes an issue.

Just about to head to the gym for a spin session so will have one on each wrist to see how they compare.