A few years ago I came to the conclusion that whenever I was struggling with an information task, the correct answer was org-mode. It's remarkable how I forget it over and over again.
I'm using an iphone, do you have any suggestions about how to sync up entries made on the move?
Yep :) It took me several recurring attempts to adopt org-mode as well, but eventually I landed on it.
Don't have iphone, so don't know about the apps. But, even if I didn't have any org-mode specific apps, a tool that merely indexed org-mode files as plaintext and allowed me to search it would already be massively helpful.
For synchronising files across your phone and computer, I'm sure there is Dropbox or Syncthing for Iphone. It's periodic sync, so there is slight possibility of conflicts, but if you use separate files to log on desktop and phone, just merging them now and then, it's not an issue.
I'm using an iphone, do you have any suggestions about how to sync up entries made on the move?