From Cabel Sasser's latest Panic report (as always, a great read):
If you remember, 2016 was the year we killed Status Board, our very nice data visualization app. Now, a lot of it was our fault. But it was another blow to our heavy investment in pro-level iOS apps a couple years ago, a decision we’re still feeling the ramifications of today as we revert back to a deep focus on macOS. Trying to do macOS quality work on iOS cost us a lot of time for sadly not much payoff. We love iOS, we love our iPhones, and we love our iPads. But we remain convinced that it’s not — yet? — possible to make a living selling pro software on those platforms. Which is a real bummer!
Giving more tools to companies like Panic to make professional, powerful software for iOS is one of the challenges Apple faces along with making the OS itself more capable. There should be more iOS-first and iOS-only Panics and Omni Groups around.
See also: last year's episode of Remaster on Firewatch (which you should go play right now if you haven't).