Which of iOS apps allow customizing font size?

Which of iOS apps that allow customizing font sizes:

• either through support of DynamicType / LargerText system settings (and BoldText that can be helpful to improve readability)


• or have their own settings for font size--and how broad is the size range available?

One of the goals for such a list is to help understanding how font sizes can change when switching between devices with different DPI and resolution--given current variety: iPad Mini/Air, iPhone 6/6+, earlier iPhones.

Ideally I'd be happy to compare screenshots, but doubtful how it can be achieved here at SE with reasonable efforts.