Today we briefly released an update to Simplenote for iOS that introduced a bug. Under some circumstances, your notes could become invisible. Not actually gone, just seemingly gone.
We decided to pull the update from the App Store, which means new users can’t download it either. We’ve already fixed the problem and are now awaiting App Store approval. If all goes well, Simplenote will return to the App Store by this Friday.
If you were unfortunate enough to snag the update before we took it down, you can avoid the bug by not creating new notes while viewing a particular tag. Closing Simplenote from the task manager and reopening it will make all notes visible again.
We’re very sorry for the inconvenience in the meantime.
Simplenote 
Perhaps you might want to consider adding the functionality into the app for you to be able to provide a one-time message on startup? That way, you could broadcast these sorts of messages to all users?
@Tekacs: That's a good idea, and something we're looking at for future versions.
I can't wait till Friday! I hope it'll be there!
In the iPad app, there is no way to zoom the text. Can you add that functionality? Also, there is Markdown preview in iPad app!
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