I accidentally deleted my app Penultimate, and lost so much information i had written. Is there any way to get all of it back?

If yo have done a recent backup you could try doing a restore from backup. That might do it.

Sent from my iPad 4 HD mini

Hi Josie - welcome to the forum!

Sorry about your problem - of course, you can re-download Penultimate, but your information stored in the deleted app will have also been erased; so unless you have a backup (e.g. Dropbox is an option looking at my copy of the same app); of course, a recent iTunes sync would have done an iPad backup but I'm not sure after you have restored the app to your iPad and done a re-sync, whether your data would be re-loaded; maybe others who have had this problem can comment on the latter suggestion? Good luck!