twitterpro iOS In version 6.7.31, Twitter has added a handy feature that gives users more control over their memory usage. The new setting allows users to see how much space Twitter is using for cached images and web content. You can then clear the memory.
This new feature will certainly be welcomed by users who often use the default application. Until now, if you wanted to clear the cache and get more storage, the only option was to reinstall the app. Twitter is thus catching up with the popular Tweetbot, which also offers this option.
The update is now available via App Store.
Source: MacRumors
I don't know, but I couldn't find it…
Try looking in "Settings"->"Data Usage", you should see it there (under the "Storage" section). If you have an English phone, this option is directly in the "Settings" menu.
I have 10.3 beta 5 and I see that Twitter has 235MB of data there but it really can't be deleted.
On an old iPad 2, version iOS 9.3.5, Twitter version 6.73.2, it's the same. And I would welcome deletion there, it only has 16GB.
OK, restart helped... :-)