A few years back, I was doing a 365 project and needed a way to know which ordinal day of the year it was. So I wrote an app to do it. After the 365 project was done, I sort of ignored the app, and eventually it did not work so well on modern iOS systems.
It is a very simple app, and really needed a refresh, so I took a few hours and rewrote it. The result is a clean, simple way to get the ordinal day of the year quickly. It’s a free app, and available on the App Store.