One File · Powerful health tracker
Log every night.
See what wrecks your sleep.
A calm, honest sleep log in one HTML file. Track every night for a few weeks and the patterns surface themselves — without paying £200 for a wristband or handing your bedroom data to a cloud server.
One payment · Yours forever · 14-day refund
- Works fully offline
- Installs as an app (PWA)
- No account, ever
- Yours, forever
Loads once, never needs the internet again. On a plane, in a basement, in a foreign hotel.
Every entry, every chart — stored locally. We never see it. We can't.
No subscription. No upgrades. No re-up next year. One file, yours.
Why track
Why measuring sleep beats guessing about it.
A sleep log isn't a wellness app. It's the cheapest way to find out what's actually wrecking your nights.
You don't remember accurately.
Last week's bad week isn't always the week you think it was. Two weeks of logging and the actual pattern shows up.
Factors are easier to spot in tens.
One bad night after coffee proves nothing. Ten do. The factor list lets the data settle the argument.
You don't need a wristband.
Bedtime, wake time, quality, duration, what you ate — that's most of the signal. The £200 device gets you a tiny extra increment.
Trends > nights.
Any single night lies. The 14-day quality trend doesn't. That's what you act on.
real distribution, real factors
rolling, with delta vs prior fortnight
no recurring fee, ever
no cloud has your bedroom data
Inside the file
Eight things you'll use every day. Plus a dozen more.
One file. One dashboard. Every feature you'd expect from a "real" app — without the cloud, the cookies, or the £8/month.
Quick add
Log a night from the home screen — three taps and back to your day.
Live insight banner
The single number that matters today, computed in real time from your entries.
Streak calendar
Daily streak across the last weeks. Showing up becomes the default.
Quality trend
Rolling window with delta vs. the prior period. Spot the drift early.
Searchable, sortable list
Every entry findable in seconds — search across notes, sort by anything.
Rating system
Star or scale ratings per entry — the patterns surface in the dashboard.
Cross-entity links
Reference one entity from another — relationships stay intact across edits.
Light + dark theme
Auto follows the system, manual override available in settings.
Offline, always
Loads once, runs forever without a network connection.
Installs as a PWA
Add to home screen — opens like any native app.
CSV in / CSV out
Bring your old data in. Take everything with you. No lock-in.
No account, ever
No email, no signup, no analytics, no third-party tracking.
Yours forever
If we vanish tomorrow, your tracker keeps working — local file, no server.
Light + dark
Auto-follows the system. Or pick one and stick with it.
Today
Today, at a glance.
The home screen pulls together what just happened and what's coming up — clean enough to actually look at every morning.
- Live insight banner — your unique angle, computed from your entries
- Four-tile stat grid surfacing the numbers that matter today
- Streak calendar showing the last weeks at a glance
- Quick-add button — log without leaving the home screen
- Recent entries on the dashboard so the last log is one tap away
History
Every entry, instantly findable.
A clean list of every entry, sorted, searchable, editable. Click any row to revise it.
- Search across notes, dreams worth remembering
- Sorted by morning of (newest first)
- 8 fields per entry — the right amount of detail
How it's different
What you save by not strapping in. About £200 a year, roughly.
Compared with subscription sleep apps and wearables.
- Pricing modelPay once · $6.99£8 – £15 / month, forever
- Hardware requiredNoYes
- Account requiredNoYes
- Data stored on your deviceYesNo
- Subscription locks featuresNoYes
- Patterns over weeks (not just last night)YesYes
- Ads or upsellsNoYes
The promise
Your sleep data is your business.
We don't want to be in your bedroom.
Offline, always
Open it once, never need the internet again. The file holds the whole app.
Local-first storage
Every entry stored in your browser, on your device. No server sync. No leaks. Nothing to breach.
One payment, forever
No subscription, no upgrade tier, no nag. If we shut down OneFileClub tomorrow, your file keeps working.
Data does not sync automatically between phone and desktop
This is a local-first app — everything stays on the device you logged it on. To use it on both phone and desktop, use the built-in JSON or CSV export on one device and import on the other when you want to keep them in step.
Every view, light and dark.
A look at every screen across both themes — your tracker, populated.
Questions
Real answers, no fine print.
Does it replace a wearable?+
Not for heart rate or sleep stages — that needs hardware. For everything else (duration, quality, factors, trends), self-reported data is most of the value at a fraction of the cost.
What if I miss a night?+
Skip it. The streak counts logging consistency, not perfection. Most people log ~5-6 nights per week and that's plenty for the trends to be useful.
Where is my data stored?+
Locally, in your browser, on your device. Nothing is sent to OneFileClub or anyone else — there is no account, no cloud sync, no analytics.
Does it work offline?+
Yes. Once your personalised copy loads the first time, the entire tracker runs from a single HTML file. Airplane mode is fine.
What does 'personalised copy' mean?+
When you buy, OneFileClub stamps a private copy with your licence and deploys it to a unique URL just for you. You bookmark it, install it as an app, or save the file — and the file is yours, even if OneFileClub disappears tomorrow.
What is your refund policy?+
14 days, no questions asked. Email us, we'll process it and disable your private URL.
One payment.
Years of better nights.
We'll personalise a copy and email you a private link. Bookmark it, install it as an app, log tomorrow morning.
14-day refund · No subscription
