On the first page I keep, mostly, apps that came with the phone and that I use quite often. They are all pretty normal and need no explanation. I have on folder where I keep the apps that I never use but I can't delete like Game Center, Stocks, Newsstand and Compass. On this page I have two apps that did not come with the phone, these are Moni and Google Maps. Moni is an app that is very useful if you are on a budget, it allows you to keep track of you're spendings and also your earnings. Google Maps, well, I think we all know what it is. I use it instead of Maps (by Apple) as I think it's more exact and gives you more information regarding public transport.
The next folder is Photography and as you all can imagine, it is where I keep all my editing apps. I do not have many as I always use the same two: VSCOcam and Squareready. The first one is a free app with cool filters and some editing options and the latter is what I use to add thew white borders
In my London folder I keep all the apps that I only use when I'm in London. Some of them are university related like Mobile Learn or Imperial. Three is my phone company in the UK and Fatsoma is where I have my tickets to get into clubs when I go out there. I don't use Starbucks, Uber or Netflix in Spain because they are not available where I live.