myTracks is the swiss-army knife for organizing your GPS tracks. They can be loaded from a broad range of devices and organized in a library comfortably.

Soulver 3 is a smart notepad with a built-in calculator. It gives instant answers to any calculations it finds in your text. It's a better way to work stuff out than with a traditional calculator, and a more lightweight tool for quick calculations than a spreadsheet.

Self-publish podcasts, appcasts, and standard RSS feeds with Feeder.

zFuse Pro macOS version, with iOS version of the same light, simple and powerful.