Privacy policy

Effective November 7, 2026

Miara helps families keep a shared record of their baby’s feeds, diapers, sleep, solid foods and growth. This policy explains what Miara stores, why, and the choices you have.

What we store

• Account details: your email address, and your name if you provide it or Apple or Google shares it when you use Sign in with Apple or Sign in with Google. Used to sign you in and to show caregivers who logged what.
• Your family’s records: the baby’s name, birth date and sex; feeds, diapers, sleep, solid foods (including allergens introduced and any symptoms you note), growth measurements and notes; milestones and memories; and anything you import from a file you choose. Used only to provide the app’s features.
• Photos and recordings you add: photos you add to a milestone, a meal, a memory or a month book, and memories you record by voice, with their words. Photos are re-saved on your phone first, so they carry no location or camera details. Used only to show them back to your household, and on a month book’s link if you share one (see “Sharing a month book” below), and insights can read the words of a memory (see Insights).
• Household membership: who belongs to your household and their role (parent, caregiver or viewer), so records are shared with the right people.
• Insights, if a parent turns them on: each morning, midday and evening insight card, the summary of the log it was written from, and which parent turned insights on and when (see Insights).
• Notification tokens: an identifier for each phone you sign in on, so we can notify it when the log changes or an insight is ready.
• Service records: for each notification we send, whether it was delivered to Apple, and for each insight, whether it was written and how long it took. These say nothing about your records, are used only to keep Miara working, and are deleted after 90 days.
• Where a record was logged: whether each new record was added in the app, on a watch, from a widget or Live Activity, from a notification button or by voice. It’s kept with the record and protected like it, and it doesn’t identify your phone or watch.
• App-open counts: the first time each day, week and month that Miara opens on a phone or watch, the app adds one to a running total for its kind of device (iPhone, Apple Watch, Android or Wear OS). We check that the request comes from a signed-in app, then keep only the total: not who opened it, which device it was or what time it was.
• Month book counts: the app adds one to totals of month books opened, how far a read got (a quarter, half, three quarters or the end) and books finished. The site counts links opened in a browser and read to the end, and how many readers saw or tapped the note about Miara after the last page, and the server counts links made and turned off. Only the totals are kept: no account, device, link or time goes with them.
• Change history: a log of additions, edits and deletions, so your household can see who changed what.

To see how Miara is used, we look at totals across all families: the app-open and month book counts above, and counts made from records already stored, such as how many families logged this week, which kinds of records they add and where they logged them. These totals never name a family or a person, and any number covering fewer than three families or people is hidden. We don’t use analytics or advertising services, we don’t collect location, contacts or advertising identifiers, and we don’t track you across other apps or websites.

Where it’s stored and who can see it

Records are stored with our database provider, Supabase, and are protected so that only members of your household can read them, apart from the pages you choose to share by link. Growth records are visible only to parents. We don’t sell your data, share it with advertisers or use it to train AI models.

When another caregiver changes the log, Miara tells your other signed-in phones so they can update in the background: through Apple’s push notification service on iPhone, and Google’s Firebase Cloud Messaging on Android. These messages carry no care records. To send them we keep an identifier for each phone, which is removed when you sign out or delete your account.

Two optional reminders also go through these services, so they can appear while the app is closed. Upcoming nap and bedtime sends the next nap’s or bedtime’s window times, and when the last feed started and whether it was a bottle. Feed reminders send when the last feed started and whether it was a bottle. Neither includes names, amounts or notes. Each goes only to the phone it’s shown on, and you can turn either off for a phone in Profile.

Photos and recordings are stored privately with Supabase in your household’s folder. Parents and caregivers in your household can see and play them; viewers can’t. They aren’t sent to Anthropic or to any AI assistant you connect.

On iPhone, if you allow it, Miara shows the photos from a given day so you can choose some for that month’s book. Those photos are read on your phone, and only the ones you choose and add are uploaded. Finding faces, to crop a photo around them, also happens on your phone. Android uses the system’s photo picker, so Miara sees only the photos you pick.

Reminders for month birthdays and the holidays you choose are scheduled on your phone. The days you choose are saved to your family’s account so Miara can notice them. Insights can send Anthropic the name of a chosen day when it’s near.

Demo mode uses synthetic data that stays on your device and is never uploaded.

Sharing a month book

A parent or caregiver can share a month book by link. Nothing is shared until one of them makes a link. Anyone who has the link can see those pages without signing in, and can pass it on, so send it only to people you’d show the book to. The pages show your baby’s name and the first name of anyone a page credits.

• What’s on a link: the book’s photos and the written words of its memories, unless you turn them off, and its charts, Insights and month ahead only if you turn them on. Voice recordings, anything saved for the doctor and Insights about symptoms are never on a link.
• How it’s stored: your phone makes a copy of the pages and the pictures drawn for them, and it’s stored privately with Supabase. The server keeps only a scrambled form of the link, so it can’t rebuild the address. Photos reach a reader through addresses that stop working after ten minutes. A preview in a message app shows the book’s month and its drawn cover, never a photo.
• How long it stays open: until it’s turned off, or until a date you choose, up to a year away. Whoever made a link, or any parent, can turn it off in the app, and that can’t be undone. Turning it off removes the copy right away and the pictures drawn for it within a day; a link that reaches its date is cleared the same way within a day. A short note that the link existed stays for 90 days, so its readers are told it ended. Something you delete from your log leaves the link the next time it’s opened. Deleting the household removes its links.
• Who else handles it: the pages are served by our web host, Vercel, which like any web host handles a reader’s IP address and the address of the page they open.

How long we keep it

We keep your records for as long as your household uses Miara. A record you delete disappears for everyone right away and stays only in your household’s change history. A photo or recording you remove the same way disappears from the app, and its file stays in your household’s private folder until the household is deleted, so that Undo and the change history still work. To have one removed sooner, email us. Deleting your account (below) removes your sign-in immediately, and removes any household where you’re the only parent along with all of its records and history.

Sign in with Apple

If you use Sign in with Apple, Apple shares a stable identifier and, the first time, the name and email you choose to share (which may be a private relay address). We use these only to sign you in.

Insights

Insights are short notes about your baby’s night (in the morning), the day so far (at midday) and the day (in the evening): wins worth celebrating, patterns across recent days, typical ranges for your baby’s age, and what to expect at each month, quoted from the CDC and the American Academy of Pediatrics. They’re written with Claude, an AI model made by Anthropic. Insights are off until a parent in your household turns them on, and any parent can turn them off at any time in Profile → Insights.

• What’s sent to Anthropic: a summary Miara computes from your log: sleep stretches and times, feed, nap and diaper counts and amounts, foods tried, how your baby took to them and allergens introduced, your baby’s age, and typical ranges for that age. It also includes the notes you add to feeds, pumps, diapers, sleep and meals from the last 7 days, as you wrote them, so a name in a note goes with it. Notes on symptoms aren’t sent. If you marked a milestone or saved a memory that day, it includes the milestone from Miara’s list, how many memories you saved, any occasion you named, and the words of that day’s memories, as written or transcribed, with your baby’s name removed. Other names in them go with them. Those words are read to write the card and aren’t stored with its summary, though the card may reflect them, and everyone in your household who can see insights can read the card. Recordings and photos are never sent. If you’re traveling, it includes how many hours you are from home, never where. It doesn’t include your baby’s name or birth date, anyone’s name from your account, or your email address. Anthropic writes the card under its commercial terms, which don’t allow it to train its models on this data. See Anthropic’s privacy policy.
• What Miara stores: each card and the summary it was written from, visible to the members of your household, and which parent turned insights on and when. Dismissing a card hides it only for you.
• Notifications: if you allow notifications, each insight’s headline (which may include your baby’s name) is shown on your phone, including the lock screen, depending on your phone’s settings. Turn insight notifications off for a phone in Profile → Insights.
• Not medical advice: insights describe your own records and what’s common at your baby’s age. They don’t diagnose anything and aren’t a substitute for your pediatrician.

Sign in with Google

If you use Sign in with Google (on Android), Google shares a stable identifier, your name, your email address and a link to your profile picture. We keep the identifier, name and email to sign you in and to show caregivers who logged what; we don’t use your picture or any other Google data. We don’t share data from your Google account with anyone, sell it, use it for advertising or use it to train AI models. You can remove Miara’s access at any time in your Google Account’s security settings, and deleting your Miara account removes it from our records.

AI assistant connections

You can connect Miara to an AI assistant such as Claude, ChatGPT or Gemini, so you can log by saying what happened. You sign in to Miara and approve each connection, which then acts as you, within your role in the household: it can read and change your household’s feeds, sleep, diaper and solid-food records, and if you’re a parent, read your baby’s growth measurements (weight, length and head size). It can’t change growth records, invite people, or change your household or account.

• What Miara stores: the records the assistant creates or changes, marked as logged with an assistant, and which connection made the change. We don’t store your conversations with the assistant.
• What the assistant receives: the records it reads or changes for you, such as your baby’s name, recent feeds, sleep and diapers, and growth measurements you ask about. What you say to the assistant and what Miara returns to it are handled by that assistant’s provider under its own privacy policy.
• Disconnecting: remove the connection in the assistant’s settings at any time. Records it logged stay in your household until you delete them.

Feedback

When you choose Send feedback in the app, we receive what you write, what kind of feedback it is, and technical details that help us find the problem: the app version, your phone’s model, system version, language, time zone and display settings, the screen you were on, how many changes were waiting to sync and the last sync error, your last few steps in the app (for example “Logged bottle”, never what you logged), how many records your log has and how far back it goes (never what they say), your baby’s age in whole months, your connection type, notification permission and app settings, and recent error codes and crash reports (code locations only). The app shows these details before you send. Nothing is sent unless you send it.

• Where it goes: the report is stored with Supabase, linked to your account. What you wrote and the technical details are copied into a private issue tracker on GitHub that only the developer can see. Your name, email and household are not copied there.
• Screenshots: after you take a screenshot in the app, it can offer to send it as feedback or to share it. If you send it as feedback (you can switch the screenshot off before sending), the screenshot is stored privately with Supabase in your account’s folder, together with the details above as they were when you took it. It may show your family’s records, so it is never copied to the issue tracker; only the developer can open it, along with the AI coding assistant (Anthropic’s Claude) the developer uses to fix the problem you reported, which sees it while working on that report. You can turn the offer off in Profile. Sharing uses your phone’s share sheet: we don’t receive what you share.
• TestFlight: feedback you send through Apple’s TestFlight app is handled by Apple and copied to us the same way, including its screenshot, which is kept like the ones above. For a crash, that includes Apple’s crash log, which stays with Supabase; only a short technical summary goes to the issue tracker. Your email stays with us and isn’t copied to GitHub.
• Deleting: deleting your account deletes the feedback and screenshots you sent from the app. To have a GitHub copy removed, email us.

Your choices

• You can edit or delete any record in the app.
• To delete your account, open Profile → Delete account in the app (your profile is the round button at the top right of each screen). Deletion is immediate and permanent: your sign-in is removed, and so is any household where you’re the only parent, with all of its records. In a household with another parent, the records stay with the family and no longer show your name. You can also ask us by email at noah@presler.me.
• You can ask for a copy of your data by emailing noah@presler.me.

Children

Miara is used by parents and caregivers to record information about their own children. It isn’t directed at children, and children don’t use it themselves.

Changes

If this policy changes, we’ll update the date above and, for significant changes, let you know in the app.

Contact

Noah Presler, noah@presler.me