Being able to save things you copy automatically

Instead of having to open the app on Iphone iOS after everytime you copy something in order to save it to the app, make it be automatic so ai don't have to switch back and forth constantly from what i'm doing. Sometimes I would write a long comment, go to another app for a second to look at a word or something, then go back, and the app would refresh itself and everything I wrote would be gone. It happens constantly with Reddit, Facebook, and Twitter. Drives me freaking nuts!