Health App Privacy on a Shared Phone: Keep Your GLP-1 Log Yours

On a shared phone or tablet, health app privacy depends as much on the device as on the app. GLP-1 details usually leak through lock-screen notification previews, the shared photo library, synced accounts and an unlocked app, so the fix is to hide previews, lock the app, move sensitive photos to a locked album and check what syncs where.

Wanting privacy is not the same as keeping a secret from your doctor or doing something wrong. Lots of people simply want to tell family in their own time, or not at all. (If you are thinking about that conversation, How to Tell Family or Coworkers You Are Taking a GLP-1 has scripts.)

Where can GLP-1 details show up on a shared device?

Walk through your phone like a curious teenager would:

Leak point	What someone might see
Lock screen	"Time for your weekly shot" or a symptom check-in preview
Photo library	Progress photos, a food scan, a photo of your pen box
Home screen and search	The app icon and name
Shared cloud accounts	Photos or files syncing to a family iPad or computer
Purchase or subscription history	The app's name on a shared payment account
An unlocked app	Weight, doses, journal entries

Now close them one by one.

How do you hide notification content on the lock screen?

iPhone: Go to Settings > Notifications > Show Previews and choose When Unlocked (or Never). You can also change this per app under Settings > Notifications > [app]. With previews hidden, people glancing at your locked screen do not see the reminder's text.

Android: Google's help says to look in Settings > Notifications, under the lock screen section, for Notifications on lock screen. There you can hide notifications entirely or turn off Sensitive notifications / Show sensitive content. You can also limit individual apps.

Remember that hiding a reminder entirely can also mean missing it. If reminders stop arriving after you change these settings, run through our notification checkup.

How do you lock or hide an app?

iPhone (iOS 18 and later): Touch and hold the app icon, tap Require Face ID (or Touch ID or Passcode), and confirm. To hide it as well, choose Hide and Require Face ID, then Hide App. Hidden apps move to a locked Hidden folder at the bottom of the App Library.

Apple is upfront about the limits:

• Locking hides the app's information from places like notification previews and search.
• Hidden app names can still appear in Settings > Screen Time, battery settings and App Store purchase history.
• Lock and hide settings apply only to that device; they do not sync through iCloud.

Android 15 and later: Private space creates a separate, lockable area for apps at Settings > Security & privacy > Private space. When locked, apps inside are hidden from the launcher, recents, search and share sheets. But there is a big catch for medication tracking: Google says locked private-space apps cannot run or show notifications, and apps that need background work, such as health trackers, will not work properly while it is locked. So private space can quietly kill your shot reminders. If you use it, plan another reminder method.

Inside the app: some apps offer their own passcode or biometric lock. Check your app's settings.

How do you keep progress photos private?

Progress photos are often the most sensitive part of tracking, and the camera roll is the least private place to keep them.

iPhone: In Photos, touch and hold a picture, tap Hide, and confirm. Hidden photos move to the Hidden album and disappear from your library, other albums and the Photos widget. On iOS 16 and later, the Hidden album is locked with Face ID or Touch ID by default. You can also remove the album from view at Settings > Apps > Photos > Show Hidden Album. If you use iCloud Photos, a photo hidden on one device is hidden on your other devices too.

Android (Google Photos): Use Locked Folder: Collections > Locked > Set up Locked Folder. Items there do not appear in the photo grid, memories, search or albums, and other apps with photo access cannot see them. Without backup turned on, Locked Folder items are stored only on that device, and Google warns they are lost if you uninstall or clear data for Google Photos or lose the phone.

In your tracking app: Many trackers, GLPily included, have a progress-photo section of their own, so you may not need those pictures in the camera roll at all. Check whether taking a photo in the app also saves a copy to your library.

What about shared cloud accounts and family sharing?

A shared account is a shared diary.

• One Apple Account or Google Account on two devices means photos, notes and app data may sync to both. If a family iPad is signed into your account, it may be showing your photos.
• Shared photo libraries (on iPhone and on Google Photos) can include pictures you did not mean to share, depending on your settings. Review them.
• Health data sync: If your tracking app syncs weight or other data to Apple Health or Health Connect, that data also shows up in those apps for anyone who can unlock the phone.
• Subscriptions: If the app has a paid plan billed to a shared payment method, its name may appear on a statement or shared purchase history.

The simplest fix is often the most effective: one person, one account, one passcode.

Should you use a separate account or a different method?

Sometimes the most private choice is not a setting:

• A separate user or account, where your phone supports it.
• A different device for health tracking, if a shared phone is unavoidable.
• A web login you sign out of after use.
• Paper, which has no lock-screen preview. Paper, Spreadsheet or App? compares the options honestly.

And before you hand a phone over for good (or trade it in), export what you want to keep and delete the rest. Can You Export or Delete Your GLP-1 Tracking Data? explains what to ask.

If privacy is about safety

If someone is monitoring your phone in a way that feels controlling or unsafe, that is different from a nosy sibling.

• iPhone (iOS 16 or later): Settings > Privacy & Security > Safety Check lets you review and stop sharing with people and apps (Manage Sharing & Access), or stop all sharing at once (Emergency Reset). Apple notes it cannot review non-Apple accounts or social media sharing.
• Support: The National Domestic Violence Hotline is available at 1-800-799-7233, or text START to 88788. Its website has a quick-exit button.
• If you are in immediate danger, call 911.

Apple's own guide suggests thinking about your safety before making changes, since some changes may be noticeable. An advocate can help you plan which settings to change and when.

Common questions

How do I hide a health app on my iPhone?

On iOS 18 and later, touch and hold the app, tap Require Face ID, then Hide and Require Face ID, then Hide App. It moves to a locked Hidden folder, though its name can still appear in places like Screen Time and purchase history.

Can people see my medication reminders on my lock screen?

They can if previews are on. On iPhone, set Settings > Notifications > Show Previews to When Unlocked. On Android, turn off sensitive content in the lock screen notification settings.

Will Android private space block my shot reminders?

It can. Google says apps in a locked private space cannot run or show notifications, and health trackers may not work while it is locked. Use another reminder method if you keep the app there.

Where should I keep GLP-1 progress photos?

Somewhere locked: the iPhone Hidden album, Google Photos Locked Folder, or inside your tracking app if it stores photos there, rather than the main camera roll.