One File · Powerful health tracker
Every feed.
Every nap. Every nappy.
A baby sleep, feed and nappy log in one HTML file. The unique trick: a 24-hour rolling rhythm view that surfaces patterns at 3am when you can't remember if you fed at midnight or 1am.
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 log
Why new parents end up with baby trackers.
Sleep deprivation eats memory; the log is the back-up brain.
Rhythm-banner answers the 3am question.
Time since last feed. Today's count. Both phones see the same data — and you don't argue about who fed at midnight.
Multi-baby supported (twins, siblings).
Each baby gets their own rhythm. Twin parents already know why this matters.
Feeds-by-hour bar chart reveals patterns.
After a fortnight, the routine you can't see in the moment becomes visible. Useful for sleep training.
Milestone log + tummy-time captured alongside feeds.
First smile. First crawl. First word. Captured in the same place.
across the first months
feeds, naps, nappies, milestones
no recurring fee, ever
private baby 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 an event 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.
Events 7d
Visual split across categories so the pattern becomes obvious without squinting.
Searchable, sortable list
Every entry findable in seconds — search across notes, sort by anything.
Free-form notes
A textarea per entry for the things that don't fit a field.
PNG share cards
One-tap share card of your stats, ready for Instagram or a group chat.
Cross-entity links
Reference one entity from another — relationships stay intact across edits.
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
24-hour log
Every event, in one place.
Date, time, event type, amount (ml / minutes / etc.) per row. Sortable, searchable, groupable.
- Search across notes
- Sorted by date (newest first)
- Group by event type with one tap
- 7 fields per entry — the right amount of detail
Babies
Every baby, in one place.
Name, date of birth, birth weight (kg) per row. Sortable, searchable, groupable.
- Search across name, notes (allergies, preferences, paediatrician)
- Sorted by date of birth (newest first)
- 5 fields per entry — the right amount of detail
How it's different
What you give up vs. baby apps. AI sleep coach.
Compared with subscription baby apps.
- Pricing modelPay once · $8.99£8 – £15 / month, forever
- Account requiredNoYes
- AI sleep / feeding coachNoYes
- Multi-baby (twins) freeYesOften paywalled
- Both parents on same dataYesYes
- Data stays on your deviceYesNo
- SubscriptionNoYes
The promise
Your baby's data is yours.
Period.
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.
Both parents access?+
Bookmark the same private URL on both phones. Edits sync to whichever device you're on; export periodically as belt-and-braces backup.
Sleep training included?+
No — that's a methodology choice. The log captures whatever cadence you're working toward; the bar charts help you see whether it's settling.
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.
A logbook for the first year.
We'll personalise a copy and email you a private link. Bookmark it, install it on both phones, log the next feed.
14-day refund · No subscription
