Board Thread:Questions and Answers/@comment-27957947-20170111000700/@comment-27957947-20170225182441

I've deleted and reinstalled the app twice recently in an attempt to fix lagging/roll back issues (it didn't help), and I totally forgot about this issue until a few minutes ago.

So, I just did another delete and reinstall and then checked my device's storage info. The result: DS is now taking up 694 MB of space- that's quite a huge difference from the crazy 2.1 GB it was taking up before the reinstalls.

I'm going to check it every few days to see how quickly it climbs.

Doing a hard reboot will clear the cache (clear the app tray, then hold down both the Home and Power buttons until the Apple logo appears on screen).

Or, you can go to Settings>Safari>Clear History and Website Data to dump the cache. Depending on how you have your device set up, you may have to re-enter user names and passwords for all your forums, etc, after doing it this way. I do hard reboots about once a week to keep my iPad running smoothly, so I only use this method when I'm mucking around in the settings to reset my keyboard (so annoying).