One tap, one hand, in the dark
Tap the dial when a feed starts and tap it again when it ends. Every control sits in the bottom half of the screen, where a thumb reaches while the other arm is holding the baby.
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Zen Otto
A complete log of your baby, built for the hour you actually use it.
- iPhone
Why people pick it
A baby log that behaves like an instrument rather than a feed of notifications.
ScreensZen Otto on
Zen Otto on
iPhone
What you getPurpose built
Purpose built
for one job.
Zen Otto is designed for a single task and finished properly. Here is what that means in practice.
Everything in one place
Feeds left and right, bottles in milliliters or ounces, diapers, pumping, sleep, weight over time, solids, first allergen exposures, and vaccination records with the dose, product, batch and site.
The day, added up
Feeds, bottle total, diapers and the longest gap between feeds for the day, with the feeds laid out across the twenty four hours so a pattern is visible without reading a list. Last night and this week get their own views.
It forgives you
Fed an hour ago and only opening the app now? Log it at the time it happened. Every deletion offers an undo, and everything can be edited afterwards.
Reference, not verdicts
The app writes down what happened and draws no conclusion about your child. No growth percentiles and no immunisation schedule, on purpose. Every judgement stays with you and your doctor.
More than one pair of hands
More than one baby, each with a separate log. A handover screen for whoever takes over. Export, so the record is yours to take anywhere.
Private by construction
No account, no sign in, no analytics, and no advertising. Everything stays on your phone and it works with no connection at all.
In the boxEverything it does,
Everything it does,
in plain language.
- Built for 3am
- Nothing on screen is brighter than it has to be
- What it logs
- Feeds, bottles, diapers, pumping, sleep, weight, solids and allergens
- Vaccinations
- Dose, product, batch, site and any reaction
- Weight
- A plain line. No percentiles, and no judgement about your child
- The day
- A summary with the longest gap between feeds, plus last night and the week
- Handover
- More than one baby, and a screen for whoever takes over
- Account
- None. No sign in, no analytics, nothing leaves the phone
- Price
- Logging is free forever, and never behind a price
PermissionsWe ask in context,
We ask in context,
and no is a complete answer.
Most apps ask for everything at launch and explain nothing. We ask for a permission where the feature lives, tell you what it unlocks, and keep the app working if you decline.
Nothing to start
Open the app and use it. No account, no email, no verification step before you can do the thing you came to do.
Asked where it matters
A permission request appears next to the feature that needs it, in plain language, at the moment you reach for that feature.
Saying no keeps everything
Decline and the app still does its job in full. Allow it and that one feature does a little more, on your device.
QuestionsZen Otto,
Zen Otto,
answered plainly.
Does Zen Otto give medical advice?
No. It shows your own log, and separately it shows published reference ranges with the publisher named on screen. It never compares the two and it never draws a conclusion about your child. It is not a medical device.
What does it cost?
Three days free, then a plan. Monthly, yearly, or one payment that never renews. Everything you log stays on your phone either way, and nothing is ever deleted because a subscription ended.
Where is my data kept?
On your phone. There is no account and no server. Nothing you log is sent anywhere, and the app works with no connection at all.
Can two parents use it?
The log lives on one phone today. There is a handover screen that tells whoever takes over exactly where things stand.
Does it tell me which vaccinations are due?
No, and that is deliberate. Zen Otto records what was given rather than predicting what is next. Immunisation schedules change, and a copy compiled into an app cannot be trusted to stay current, so the app keeps the record and leaves the schedule to your doctor.
Available todayBuilt for one job.
Download on the App Store Built for one job.
Trusted with the rest.
Read the privacy policy and terms before you install. Stores show any price before you buy.