Evernote might be the zenith of productivity apps for your iPhone: it pretty much help you remember anything and everything. Evernote lets you create notes, photographic snap shots, or record voice memos, which can then be accessed from either your iPhone, personal computer, or the web.
The benefits of Evernote for seniors are quite obvious: aging adults with basic memory problems should latch onto Evernote as a reliable, easy to use, memory tool. In all sincerity, out of the thousands of apps, Evernote has to be one of the most impressive, as it essentially functions as a second memory bank.
It's uses are infinite. For example, you see that you ran out of milk, take a picture of the empty milk cartoon, and refer to your notes later at the supermarket to remind yourself that you need to pick up more milk.