I don't know Memopad or what it does. You may want to check out iDo Senior. I find it to be perfect for my note taking purposes. I have a folder hierarchy up to 7 levels deep with, at the moment, 10 top domains. It has a search function that finds the document containing your search object. Good enough for me. It has a selection of about a dozen fonts. It's not the easiest to set up, but once I got familiar with it, it's just great. Good luck, hope you find the right app.
Jürgen & Helen,
via iPod touch and Tapatalk.