Track sleep
Start a timer for naps and nighttime sleep. See how long your baby rested and what happened last — without digging through menus.
Your baby's data stays on your phone — always.
A calmer way to track sleep, feeds, and diapers
Joni helps you see your baby's day at a glance — with gentle reminders when time blurs together.
All your data stays on your device. We do not collect, upload, or store any of it.
Your data stays on your device
Sleep logs, feeds, diaper changes, and your baby's profile are stored only on your phone. Joni has no servers that receive your care data. We do not create accounts, do not sync to the cloud, and do not sell or share your information. If you export a CSV, you choose where it goes.
No cloud upload
Your logs are never sent to us
No account required
Nothing to sign up for or log into
No data collection
We do not collect or store your baby's information
Optional feed reminders are scheduled on your phone too — we don't need your data to nudge you.
On your device only
We don't collect or store your data — it never leaves your phone
Built for tired nights
Big buttons, quick logging, optional feed reminders
Yours to share
Export a CSV anytime — only when you choose
Everything you need, nothing you don't
Simple tools for sleep, feeds, and diapers — designed for tired nights and busy days.
Log feeds
Record breast, bottle, and solid feeds in a few taps. Notes and timestamps stay in one timeline you can scroll when the days blur together.
Diaper changes
Log wet, dirty, or both — alongside feeds and sleep so you have a full picture of the day.
Your dashboard
A gentle morning (or midnight) overview: last sleep, last feed, recent activity, and — when you have enough history — predictions for what might come next.
Gentle reminders
Optional notifications about three hours after a feed, for those moments when you lose track of time. You stay in control — turn them on or off anytime.
Export your data
One tap to export sleep, feeding, and diaper logs as CSV. Share a week with your pediatrician or keep your own backup.
How it works
- 1
Set up your baby
Add a name and birth date (optional). No sign-up, no cloud.
- 2
Log as you go
Tap sleep, feed, or diaper from the home screen. Saved on your device only.
- 3
See patterns emerge
Dashboard summaries and predictions build from your own logs — processed locally, not on our servers.
A gentle overview of your day
See last sleep, last feed, and recent activity at a glance — with predictions when you have enough history.
Made for the early months
The newborn stage is beautiful and exhausting. You do not need another complicated app or another login to remember. Joni is intentionally simple: track what matters, see it clearly, and keep it private. Whether you are breastfeeding, bottle-feeding, or mixing both, Joni fits around your routine — not the other way around.
- Your baby's data stays on your phone — we don't collect or store any of it
- No social feed, no ads, no comparison with other babies
- Works offline — your data is always there
- Designed for one-handed use
Your privacy matters
All data stays on your device. We do not collect, upload, or store your baby's name, birth date, or care logs on our servers. No account required. No cloud sync. No selling your data. Optional notifications are scheduled locally on your phone. If you export data, you choose where it goes. You can also sync data between paired devices — for example, both parents' phones — directly over an encrypted connection. A minimal connection service helps your devices find each other online, but your baby's care data itself is sent device-to-device and is never sent to or stored on our servers.
Read full policyFrequently asked questions
Do you collect or store my baby's data?+
No. All data stays on your device. We do not collect, upload, or store your logs on our servers.
Do I need an account?+
No. Joni stores everything locally on your phone. There is nothing to sign up for.
Is my baby's data uploaded to the cloud?+
No. Joni does not sync to the cloud. Data stays on your device unless you export and share it yourself. This is true even if you use multi-device sync: your logs travel directly between your paired devices, never through our servers.
Does Joni work on Android?+
Joni is available now on iOS. Android support is coming soon.
Can I use Joni for twins?+
One baby profile per install today; multi-baby support may come later.
Is Joni medical advice?+
No. Joni is a logging tool, not a substitute for your pediatrician or lactation consultant.
How do reminders work?+
After you log a feed, Joni can schedule a local reminder ~3 hours later. You can disable this in Settings.
Can two parents sync data between their phones?+
Yes. Pair two or more devices and Joni syncs sleep, feed, and diaper logs directly between them over an encrypted peer-to-peer connection. A minimal connection service helps your devices find each other online — it only ever sees device IDs and connection setup info, never your baby's care data, which stays off our servers.