Jack, you actually can edit a published story on the iOS version of Medium, but it is not convenient. You have to go to your You page by selecting the person icon at the bottom of the app, then select Stories, then select Public, then scroll endlessly until you find the story you want to edit—because responses are STILL considered stories by Medium. Then once you find the story, select the beloved “three dot” menu, then you can edit. Easy Peasy. Buying a laptop is a better solution. 🤓