Panic has an iOS code editor -- right now it's built off Coda, Nova's predecessor, but I'm sure if there's market demand for it, an iOS version will be coming.

Panic has an iOS code editor -- right now it's built off Coda, Nova's predecessor, but I'm sure if there's market demand for it, an iOS version will be coming. Having said that, a lot of software developers -- including Panic -- have not had great experiences trying to sell development tools on iOS. It feels like there should be a big enough market for this, but it's unclear there's actually much of one. If Apple brought Xcode to iPadOS it would likely require changes to the OS to support that kind of development toolchain, and that would make it easier for other companies to bring their tools, both commercial and free. But I half-suspect the official Apple answer to "when are you gonna let us develop on iPadOS" will be "may we interest you in this Apple Silicon-based, touch screen MacBook that natively runs iPad apps."