How to Check apps for updates or replacements

1 Check the list

In Settings > General > About, if there’s no arrow at the right of the Applications row, none of your apps require immediate action (though that’s no guarantee they won’t have other issues). If there is an arrow at the top of the row, tap it.

2 Check for updates

Tap an app’s row to go to its store page, if it’s still there; you may see an Update button if you’ve disabled autoupdates in Settings > iTunes & App Store. If there’s an update, download it and see if iOS flags up its compatibilty.

3 Ask the developer

If the app’s delisted, check if an upgrade is available as a new purchase: search for the developer’s name in the App Store. Failing that, ask directly through its website if there are plans for an update or a replacement app.