[lukas9]

The other guy is not wrong... kinda. I used AI for the code because I have no experience with Swift and SwiftUI, but I do understand how the calculations work, because I designed them. CelesTrack gives me TLE data, precisely describing each satellite's orbit and movement, as well as its current position on the orbit. What my app does is simply simulate the satellite's position (in 30-second intervals) up until 2 or 7 days into the future, and checks whether the satellite is overhead on each interval. Satellites are considered overhead based on just one criterion, and that is that they are above your horizon (so an elevation > 0 degrees). Hope that answers your question.

[idiotsecant]

There is a huge ecosystem of software not written because someone doesn't know a library or a particular software tech or maybe even a language, but they have an idea for something useful. I would venture to say that in the very near future a huge quantity of useful software will be 'good enough' boilerplate code with the human providing the central purpose.

Comments like great grandparent post will be somewhat like tailors tearing their hair out over everyone using factory manufactured clothing.

It might not be the same quality, it might not be a beautiful bespoke perfect structure, but it's good enough and it does the job.

Well done, op.