Attributed String Creator
Attributed String creator can automatically generate native Objective-c code from your formatted text. You can write, paste, or import text into attributed String Creator, which generates an elegant, easy-to-read equivalent for text. Copy it into your Xcode project and you will have an exact copy of the text,
You can assign it a label, a text view, a button, a table, or any other element that supports it.
Moarfonts
This library allows you to use custom fonts in iOS apps directly from IB, meaning you can save a lot of time.
IOS Fonts
Have you ever wondered what the actual iOS font looks like? Have you ever spent all your time browsing through these fonts? If you don't, you can use the site to see all available iOS fonts, which works well in both the desktop and mobile browsers.
Swiftfonts
There's no big difference between swiftfonts and iOS fonts, but I think it's fascinating for developers who are learning swift and for developers who want to learn.
Fontawesomekit
Sometimes you will find a picture of the thousand words, which is why I think Fontawesomekit is very suitable for the reasons put in this article. Fontawesomekit is an iOS icon font library that currently supports Font-awesome, Foundation icons, zocial, and Ionicons.
5 layout Tools for iOS developers