My events seem to have disappeared — did the app delete them?

First, take a breath — in almost every case your events are completely safe.

Calendar Op.2 doesn’t store any of your event data. It simply displays the events kept in your iPhone’s built-in Calendar app (and whatever accounts that syncs with, such as iCloud or Google). Because of this, installing, updating, or even deleting Calendar Op.2 cannot delete your events. When events seem to vanish, it’s nearly always that the calendar they belong to has been switched off from view.

Step 1 — Turn your calendars back on

1. Open the built-in Calendar app (the one made by Apple).
2. Tap Calendars at the bottom of the screen.
3. Make sure every calendar you use has a checkmark.

Then open Calendar Op.2, go to Select calendars to display, and confirm the same calendars are enabled. In most cases your events reappear right here.

Step 2 — Check the built-in Calendar app

If they’re still missing, look in the built-in Calendar app itself:

• They’re there, but not in Calendar Op.2 → it’s only a display or permission setting. See I don’t see any of my events.
• They’re missing from the built-in Calendar too → the events are hidden or were removed at the account level — not by Calendar Op.2. Continue to Step 3.

Step 3 — Recover events that are truly missing

1. Were the events syncing to iCloud? If so, iCloud can often restore your calendars to an earlier version. On a computer, sign in at iCloud.com and use the calendar/data‑recovery option. Apple’s reference is support article 102508.
2. Not using iCloud (local only)? The events may be recoverable from an earlier device backup (an iCloud Backup or a computer backup made before they disappeared).

Step 4 — Restore your calendars from iCloud (last resort)

If your events were syncing with iCloud and nothing above brought them back, iCloud keeps earlier versions (archives) of your calendars that you can restore yourself. iCloud saves a copy of your current calendars before it restores, so the change can be reversed. This has to be done on a computer or tablet (it isn’t available on iPhone). If you’ve made changes since the archive was saved, you might lose some of them, so it’s worth backing up first.

1. On a computer or tablet, sign in to iCloud.com with your Apple Account.
2. Scroll to the bottom of the window, then select Data Recovery.
3. Select Restore Calendars.
4. Versions are listed by the date they were archived. Next to one from before your events disappeared, select Restore.
5. Select Restore again to confirm. When it finishes, you’ll get a notification on iCloud.com and an email at your Apple Account address.

A few things to know first:

• It replaces your calendars on every device. The version you choose replaces your current calendars on every device signed in to that iCloud account. Because iCloud saved your current calendars first, you can return to them by restoring the most recent version.
• Shared calendars lose their sharing. Restoring erases all sharing settings, so you’ll need to share those calendars again (or ask the owner to reshare). Before restoring, it helps to note down which calendars you share and with whom (and whether each person can edit or only view), as well as any calendars other people share with you.

For the complete, up-to-date steps, see Apple’s article: If you accidentally deleted your contacts, calendars, or bookmarks from iCloud. Apple may change this screen, so follow their page if anything looks different.

Prevention

Keeping iCloud Calendar sync turned on means your events are continuously backed up to your Apple Account, which makes recovery far easier if anything ever goes wrong.

Still stuck? Please contact us with your iPhone model and iOS version, and we’ll help you investigate.