What happens to your hikes if you delete a hiking app?

The short answer

It depends on where your history was actually stored, not on how the app looks or what it is called. If your hikes only ever lived in the app's own storage on that one phone, deleting the app deletes them along with it — iOS does not keep a separate copy lying around once the app itself is gone. If your history was also saved to an account that syncs to the cloud, reinstalling the app and signing back in generally brings all of it back, because the data was never only local to begin with. The delete confirmation looks identical either way; the difference is entirely on the inside.

What "delete" actually removes on iOS

Every iOS app runs inside its own private storage container, invisible to other apps and cleared out along with the app when it is deleted. That container is where a locally-stored hiking app keeps its database of routes, its saved photos and clips — all of it — so deleting the app is not just removing a shortcut from the home screen, it is removing the folder everything else was sitting in. Reinstalling the same app afterward does not restore that folder. The App Store hands you a fresh copy with an empty container, because as far as iOS is concerned it is simply installing the app again, not recovering anything.

Offload App is a different button, and it matters

iOS actually has two separate actions that get confused for each other. "Delete App", reached by long-pressing the icon, removes the app and its container together, exactly as above. "Offload App", tucked away in Settings → General → iPhone Storage, removes only the app itself and leaves its documents and data behind on the phone — reinstalling later restores that data automatically, without needing any account or cloud sync at all. It exists mainly as a way to reclaim storage from an app you are not using right now without losing anything inside it, and it is worth knowing it exists before assuming a full delete is the only option when storage runs low.

The real dividing line is the account, not the app

A hiking app that asks you to sign in and syncs your history to an account is protected against deletion in much the same way it is protected against losing the phone entirely: the data was never only local, so removing the app removes a window onto it, not the thing itself. An app with no account at all, or one where sign-in was skipped, has nothing to fall back on — its container is the only copy that ever existed, and deleting the app is deleting the only copy.

What to check before deleting a hiking app

• Whether the app has an account or sign-in at all, and whether you are actually signed into it — installed and used without ever signing in is functionally the same as a local-only app.
• Whether a sync has actually finished, not just started — a hike recorded minutes before deleting may not have reached the cloud yet, especially over a weak connection.
• Whether an export exists — a GPX or CSV file saved outside the app is a copy that survives regardless of what happens to the app's own storage.
• Offloading rather than deleting, if the real goal is only to free up space for a while rather than to remove the app for good.

Where TrailCam fits in

TrailCam lets you sign in with Apple or with an email address, and once you do, your routes sync to the cloud — the same mechanism that lets a new phone start with everything already there also means deleting and reinstalling the app costs nothing, as long as you sign back into the same account afterward. Exporting is worth using too: a route can be saved as a GPX 1.1 or CSV file independently of the app itself, a reasonable extra copy to keep for a hike you especially do not want to lose. TrailCam is free to download.