Microsoft has pushed out a small, but not unimportant update to its OneNote applications for iPhone and iPad. In the process it fixes one of the more irritating issues, because now we're finally given background sync! OneNote has had a tendency to be somewhat slow syncing your notebooks between device and cloud, but that should all be a thing of the past.
Background Sync - OneNote now syncs your notebooks in the background, including content you send to OneNote via the Share Extension; this means less time spent waiting for notebooks to sync when you open the app.
OneNote is an extremely good, and extremely popular app across platforms, and while background sync has taken altogether too long to arrive, you can't fault Microsoft for the effort put into the iOS app.
Grab the latest version right now from the App Store links below.