My apologies for not knowing how to create a clickable link :(
1. When there is text in the comment field, then the submission will point to the text in it.
2. To submit a link, the comment field must be empty.
3. It is ok to submit a "Show HN" link and then comment in the thread.
Question: Is there a story behind why you created your app?
The founders of this app, two guys from my town, are from a nearby village and they commute from their village to the town daily. They had to call and tell their parents that they reached their office safely. If they did not call the parents would get worried. Sude note: it is expected in India for grown children to live with their parents.
So they thought an app would help them save money and time. Also, this ensured their parents got a notification as soon as they reached their office.
Because if there is text in the big box at the bottom the headline will link to it. And the headline will not link to the external site.