The baby tracker that shows your day’s rhythm
Log sleep, feeds and diapers in a couple of taps. The home screen shows when your baby is likely to want the next nap and the next feed. One diary for the whole family, and it works offline.
Rytmi is on iPhone for now. The Android app isn’t on Google Play yet.
For iPhone · free · no ads
Sleep and wake time One-tap timer, naps and night sleep kept apart
Feeds Breast, bottle, expressed milk and solids
Up to five adults A partner, grandparent or nanny in the same diary
Works offline Entries save instantly and sync when you’re back online
Two taps and it’s in the diary
A nap or a feed starts with one button. Missed one at 3 a.m.? Add it in the morning with the right time. Event types you don’t use can be hidden from the menu.
A running feed stays in view
Start a breastfeed or a bottle and a timer card sits on top of the diary. Switch sides right on the card; each side is timed separately.
One diary for everyone who helps
Your partner, a grandparent or a nanny opens the same diary, up to five adults in all. Everyone logs from their own phone, and everyone sees the same thing.
- Invite with a link from the diary settings
- Revoke access at any time
- The same estimates on every phone
- Each child has their own diary and insights
Your baby’s normal, not someone else’s schedule
The last three full days are compared with what is typical for your baby: total sleep, day and night sleep, wake windows, the first nap. If something has shifted, it shows up on its own line.
When your baby usually falls asleep
Wake windows over the last few days, usual sleep and wake-up times, and charts of sleep and feeds for any period. Estimates start from age-based ranges and adjust to your baby’s own history.
Every entry, right where you left it
All events in one list, with search and a filter by type. Open any entry to fix the time or delete it. Sleep that runs past midnight stays one entry and is split correctly between the two days.
Your diary stays yours
What you write about your child is private. Rytmi doesn’t sell data or show ads, and only the people you invite can open your diary.
- Diary details never appear in notifications
- The database on your phone is encrypted
- No ads and no tracking across apps
- Delete your account and every entry from Settings
Questions
How much does it cost?
Rytmi is free right now, with no ads and no in-app purchases.
How do I add my partner?
Open the diary settings, tap “Invite a family member” and send the link. Your partner opens it on their phone, signs in and sees the same diary. A family can have up to five adults.
What if my phone was offline?
Nothing is lost: entries are saved on the phone and sync once you are back online.
What if I have twins?
Each child gets their own diary, estimates and insights. You switch between them with one tap on the home screen.
Is there an Android version?
Not on Google Play yet. Right now Rytmi is available for iPhone with iOS 17 or later.
Start with today
Log the first nap and you’ll see an estimate for the next one right away. It gets more accurate every day.
Rytmi is on iPhone for now. The Android app isn’t on Google Play yet.
For iPhone · free · no ads
Estimates are for planning the day, not medical advice. For questions about your child’s health and development, talk to your pediatrician.
