For purely practical and non-sentimental reasons, I still have the current version very first iPhone app I ever downloaded on my phone fifteen years later. I wrote the developers today to let them know that and was tickled pink when they wrote back. AppBoxPro

 https://amerpie.lol/uploads/2024/cleanshot-2024-05-08-at-21.06.472x.jpg https://apps.apple.com/us/app/appbox-pro/id318404385