Really, Really, Really old post but support.
The requirement that forbids Apps from running code is moot because:

Apple wrote:

App Store Review Guidelines

2. Performance
…..


You wrote a long message so i shortened it.

It is on iOS already but as a website, so sometimes you'll have to re-login!
What the Original Point (OP) has said was on iOS but what they meant was on iOS as
an app!

However when ST tried to add it as an app, AppStore took it down because it's an app for modifying code
and it would glitch a lot…

BUT us iOS users use it on the web as it ain't that hard to open it, It would be easier if there was an app
but there isn't :c

If you read this much thanks for reading <3