Shared family medicine cabinet: invite, what they see, revoke

Family cabinet sharing in HealthLab lets one family see a shared medicine cabinet and restock list across several iPhones at once. Turning it on in the cabinet’s settings and inviting family members is a Pro feature for the cabinet owner; syncing then runs directly between your devices through private Apple iCloud, with no HealthLab account involved. Accepting an invitation and viewing the shared cabinet is free for the invited family member. Access can be revoked at any time.

What you can do and where

What’s shared and what isn’t

Before turning sharing on, it helps to know exactly where the feature stops. Only two things become shared: the medicine cabinet itself (the list of medicines, expiry dates, locations, tags) and the restock list. That is the full extent of what is shared.

Family cabinet sharing does not extend to your lab results, and it does not extend to medication courses with their schedules and reminders — those live in separate parts of the app and stay private on your device unless you take a separate action inside the app itself. If you need to show someone your lab results or your medication schedule, that is a different job — PDF export for a doctor, for instance, not family cabinet sharing.

It is worth keeping this boundary in mind precisely because sharing “the whole family’s health” with one toggle feels intuitive. HealthLab does not work that way: every part of the app — the cabinet, lab results, medication courses, the journal — has its own privacy model, and turning one on does not open the rest. That is a deliberate design choice rather than a version limitation: the narrower the scope of what actually syncs, the fewer reasons there are to hesitate before inviting someone to the cabinet.

Step 1. Turn on the shared cabinet

Open Cabinet → toolbar people icon → Shared cabinet and switch it on — turning sharing on is a Pro feature for the cabinet owner. This does not create an account and does not send any data anywhere except your own private iCloud — it simply makes the cabinet ready to be shared. If you keep more than one cabinet or family profile in the app, the toggle enables sharing for the specific cabinet you have open at the time. (Pro)

Step 2. Invite a family member

In the Shared cabinet screen, find the option to invite someone and send the invitation to whoever you want to share the cabinet with. The invitation travels through your own private iCloud (Apple CloudKit Share) — the same mechanism behind a shared photo album or a shared reminders list in Apple’s ecosystem. (Pro, part of the owner’s subscription)

Step 3. What the invitee sees

Once they accept, the family member sees your medicine cabinet for free: the list of items, expiry dates, locations and tags, plus the restock list. They do not get access to your lab results or medication courses — those are outside the scope of family cabinet sharing. Viewing is free for the invitee; editing something themselves needs Pro on their own device too, syncing back through the same private iCloud connection.

Step 4. Revoke access

At any time, open the Shared cabinet screen and remove the person from the list of members. Access stops immediately, with no explanation required and no need to delete the app. This works both ways: either the cabinet owner or the invited family member can end the sharing relationship from their own device.

Step 5. What happens after access is revoked

Family sharing is opt-in and can be turned off at any time — removing the family member from the list is enough. Once access is off, that person stops receiving any further changes to the home medicine cabinet and the restock list: syncing of new updates stops immediately, on both sides.

Privacy: exactly where your data travels

This is the point where it is easiest to worry, and the most important place not to guess and instead read what the product actually says. HealthLab states it this way: you invite a family member, and your home medicine cabinet and restock list sync between your iPhones directly through private iCloud (Apple CloudKit Share). No HealthLab account, none of our servers — just your iCloud. It’s opt-in and you can turn it off anytime.

In practice this means the data never passes through HealthLab’s servers: Apple’s iCloud transports and stores it under your Apple ID, and there is no email or login required to take part. Outside of family sharing, every piece of app data — lab results, medications, the cabinet — is stored locally on your iPhone through SwiftData. Separately, you can turn on optional iCloud sync (off by default) to sync all of that data, including lab results, between your own devices under the same Apple ID.

Family sharing itself does not involve AI: the cabinet and the restock list sync through the private iCloud connection between the devices you invited, with no proxy or AI service in that path. Images do leave the device whenever you choose AI recognition elsewhere in the app — importing a lab result from a PDF or photo, adding a cabinet item by photographing it (Pro), or importing a prescription (Pro) — each time sent through our proxy to Google Gemini Vision. That happens whenever you deliberately trigger recognition, regardless of whether family sharing is on.

Scenario: a mother’s cabinet in another city

A mother lives in another city and keeps her home medicine cabinet in HealthLab — vitamins, blood-pressure medication, painkillers for her husband. Her adult child is connected through family sharing and sees the same restock list. A week before visiting for her birthday, the child opens the restock list, notices one of the regular medications is expiring soon, and picks up a fresh pack on the way — instead of finding out about it after arriving, or having to ask over the phone.

That is the practical value of shared access: not constant oversight, but an instant, synced snapshot of what in the cabinet needs replacing, visible to the person who can physically close the gap. Without family sharing, this same situation usually plays out as a phone call, an attempt to recall a medication’s name from memory, and a real chance of buying the wrong dosage or the wrong brand. The restock list removes that guesswork because it already states exactly what’s expiring.

Edge cases

• The invitee has no iCloud. Family cabinet sharing runs through Apple CloudKit Share, so without an active iCloud account on their device the invitation cannot be accepted.
• The invitation is declined. The cabinet stays fully private, exactly as before; nothing is shared until an invitation is accepted.
• Sharing is switched off. If either side turns family sharing off, syncing stops and each person returns to their own private cabinet.
• No internet during the invite. Because the exchange runs through iCloud, both sending and accepting an invitation need at least a brief connection; viewing an already-synced cabinet offline works as usual.

Free or Pro

Viewing a shared medicine cabinet and its restock list is Free for the invited family member — accepting an invite needs no subscription on their side. Turning sharing on and holding it as the owner is Pro, and so is editing a shared cabinet from the invited side. Pro also covers photo-add for items via Gemini Vision, the 3-day expiry push, and the weekly cabinet digest. If all you need is to view what a family member shares with you, no subscription is required.

Frequently asked questions

HealthLab for the whole family

Family cabinet sharing makes the most sense once the cabinet itself is set up — start with Set up your home medicine cabinet in HealthLab: a full guide, then invite the family. If you’re also planning baseline lab work for a family member over 40, see Women’s health after 40: baseline labs.

You can see what the cabinet and the restock list look like on the medicine cabinet page. If privacy is the main question before you invite anyone, the home page explains how HealthLab stores your data in more detail.