Just make a web application.iOS web applications are:
- Reliable. The amount of time it takes to make an update is far shorter than with Xcode.
- Fast. JavaScript on iOS is, by nature, far faster than native apps.
- Free. You never have to pay Apple a cent, as Apple doesn't have any control over you.
- Safer. If a crash occurs with a native app, it can take down even the newest iOS devices for hours or even days, until the user can fix them. If a web app crashes, the user just has to close and reopen it, worst case scenario.
- Offline. You can easily create a service worker to handle your app.
- Secure. Because you do not have access to native APIs, a security breach will be significantly less dangerous.
- Easy to program. A basic iOS web app can be programmed from the Safari URL bar on an iPhone. Literally. I've done it myself.