Effective the day the app version with "Share with family" is released · Updated November 6, 2026 · 한국어
Until the effective date, the October 30, 2026 version applies. What changes: only if you turn on "Share with family" are your logs kept on our server in Japan (sections 2 and 3).
OhMa Lab ("we") runs OhMaBaby, a baby care log (the app and the web app, together the "service"). OhMaBaby works without an account, and your logs are stored on your device. Only if you turn on "Share with family" to see the same logs with your family are your logs kept on our server.
Everything you log (feeding, sleep, diapers, growth, temperature, medicine, vaccinations and so on), your child's nickname, birthday and photo, notes and settings are stored on your device, in the app's storage or your browser's storage. Unless you turn on Share with family, they are not sent to our servers and we can't see them. Your child's photo stays on your device even with sharing on.
When you log by voice, your phone's speech recognition (from Apple or Google) turns your words into text. OhMaBaby doesn't save the audio or send it to us.
If you add your child's photo, OhMaBaby crops it to a small square (512 × 512 pixels) and keeps only that copy on your device, not the original. It's used only to show next to your child's name at the top of the screen. When you choose a photo, the app reads only the one you pick. If you take a new one, your phone asks for camera access first.
Sharing starts only when you turn it on in Settings → Share with family, and we ask for your separate consent to keep health information. If you don't agree, only sharing is unavailable; everything else works the same.
| What | Details | Why | How long |
|---|---|---|---|
| Logs | Feeding, sleep, diapers, growth, temperature, medicine, vaccinations, notes and so on (includes health information) | To show the same logs on your family's devices | Until the family space or that log is deleted |
| Child details | Nickname, birthday, sex, due date | To group logs by child and show growth percentiles | Same as above |
| Names | The name your family sees (e.g. Mom) and the family name. Also shown on each log to say who added it | Family list and "logged by" | Until you leave that family (names on logs stay with the logs) |
| Device ID | A random ID and secret the app creates (we store only a hash of the secret) | To recognize this device | Until you leave the family or delete your account. A device removed by the owner is deleted the next time the app opens (a signed-in device: when you sign out or delete your account). A device whose app was deleted is removed from the server after 30 days out of the family |
| Sign-in ID | If you choose Kakao, Apple or Google sign-in, the one user number that company gives us. We don't receive your email, name, photo or phone number. For Apple sign-in we also keep the token Apple gives us so we can disconnect it when you delete your account | To find your family on a new device | Until you delete your account |
| Notification token | The notification address and language of a device in a family. It stays on the server even if "Notify me when family logs" is off | To keep widgets up to date and show family timers when the app is closed, and to notify people who turned notifications on | While you're in the family. Deleted when you leave or delete your account, and within an hour if the owner removes you or another device on your account leaves |
| Lock Screen token | The Live Activity token an iPhone gets from Apple while the family timer on the Lock Screen is on. It's on when you join a family, and you can turn it off in Settings → Share with family | To show and update a timer your family started on the Lock Screen when the app is closed | Until you turn it off, leave the family or delete your account. The token for a single timer is deleted when the timer ends, within 12 hours at most |
| Timer status | A running timer's type (the title is only the type name, such as "Sleeping"), the name of who started it, and its start and pause times | To show the same timer on your family's phones | Until the timer ends, 12 hours at most |
| Widget summary | The current status made by the device that sent a log: your child's nickname, the last feeding, sleep and diaper, and medicine, temperature and symptom rows | To keep your family's widgets up to date when the app is closed | Replaced by each new summary, until the family space is deleted |
| Purchase check | The store's transaction number (iPhone) or purchase token (Android) when a device that bought Remove ads turns on sharing | To remove ads for the whole family, and to check that one purchase isn't shared across too many devices | Until the device is removed or isn't confirmed for 180 days. Refunded or canceled purchases are kept for up to 2 years so they can't be reused |
Only when sharing is on, data is transferred abroad as follows (needed to provide the service).
| Recipient | Country | What | Purpose | When and how | Retention |
|---|---|---|---|---|---|
| Oracle Corporation Japan (Oracle Cloud Osaka, a server we rent) | Japan | Everything in section 2 | Keep family devices in sync | Each time you log, over an encrypted connection | As in section 2 |
| Apple Inc. (Apple Push Notification service) | USA | Notification token, Lock Screen token, note and timer status | Deliver notifications and family timers to iPhone | When a family member logs | Not kept by us after delivery |
| Google LLC (Firebase Cloud Messaging) | USA | Notification token, note and timer status | Deliver notifications and family timers to Android | When a family member logs | Not kept by us after delivery |
If you don't want this, don't turn on sharing, or leave the family. Everything else keeps working. While you're in a family, the token for widgets and timers passes through these companies even with notifications off.
Our web server and sharing server may keep an access log with your IP address and the time of the request. We use it only for security and to find errors.
| Provider | What it does | Location |
|---|---|---|
| Oracle | Runs the web server and the sharing server (Oracle Cloud) | Japan (Osaka) |
If you haven't turned on sharing, nothing about you or your child is stored on these servers apart from access logs.
The app (not the web app) shows ads from Google AdMob. There are no ads for the first 7 days, and never on the screen where you log. To show ads and measure them, AdMob may collect information such as an advertising identifier, device information, approximate location (estimated from your IP address) and which ads you saw. OhMaBaby requests only non-personalized ads, and on iPhone it never asks for permission to track you across other apps and websites. Shared logs are never used for ads. See how Google uses information in ads. You can reset or delete your advertising ID in your phone's settings.
If you buy Remove ads, the store you got the app from handles the payment. We never receive your card number or other payment details. The app only asks the store whether you've bought it and notes that on your device. If you turn on sharing, the purchase check in section 2 is kept on our server to remove ads for your whole family.
On Korean-language screens, the app may show a Coupang Partners banner and links to baby supplies such as diapers and formula. The banner image is loaded from Coupang's servers, so Coupang can see your IP address and that the banner was shown. OhMaBaby sends Coupang none of your logs or identifiers, and what happens after you tap a link follows Coupang's privacy policy. If you buy through these links, OhMa Lab earns a commission from Coupang.
Shared logs are visible only to the family members you invite. We don't sell personal information or share it with anyone else. Because the app requests only non-personalized ads, we don't share personal information for cross-context behavioral advertising. If you join a different family than before, only logs written by the person on that device go to the new family. Logs other people wrote, and the previous family's child details, stay on that device and aren't sent to the new family.
OhMaBaby is made for parents and other caregivers. It is not directed to children under 13, and we don't knowingly collect personal information from children. Information about your child is entered by you and is visible only on your devices and, if you turn on sharing, to the family you invite.
You can see, correct, export and delete your logs in the app. Depending on where you live (for example California or another US state, or Korea), you may have rights to access, correct or delete personal information we hold about you. If you use sharing, email us and we'll respond within the time the law requires.
Privacy officer: 마승희 (owner) · support@ohmalab.com
If we change this policy, we'll post the change on this page at least 7 days before it takes effect. If we start collecting more, we'll also tell you in the app.
October 15, 2026: added that a child photo, if you add one, is stored only on your device. Nothing more reaches us, so this applies right away.
October 30, 2026: added the Coupang Partners banner and links on Korean-language screens. Nothing more reaches us, and this applies from the app version that has the banner.
November 5, 2026: added "Share with family" (only if you turn it on, logs are kept on our server in Japan; sign-in and notifications are optional). It applies only to people who turn it on and give separate consent at that moment, and nothing changes for anyone else, so it takes effect without the 7-day wait, from the day the app version with this feature is released. Cleanup of the earlier family sharing (Supabase) is complete.
November 6, 2026: added the Lock Screen token, timer status, widget summary and purchase check kept on our server when sharing is on to the tables in sections 2 and 3. These take effect on the same date as the November 5 change. We also added that a notification token stays on the server for widgets and timers while you're in a family, and that the content of a deleted log is removed from the server right away.