I think you should at least have preceded the title of the original post with a "Show HN: ".
In your comment advertising your sale, you should've added a disclaimer saying that you're directly profiting from it, or at least made it clear that it is your product. Just my opinion though.
Anecdote time: A few years ago I had too register for a ceremony in the university. They had few slots, and the date was a random day of the month announced in an obscure web page updated randomly. So the solution was to go every few days to look if the new one has been announced and try to register soon enough.
So I think tracking a date may be useful. It's more complicated because there are like a million of formats, dd/mm/yy, mm/dd/yy, MMMM dd, dd MMM, .... so it's not easy to support.
In my case, probably "something changed" was enough. But I guess in other case the announcement page my have a few independent parts that change for other reasons.
Interesting, thanks for sharing!
If the exact field was updated, text tracking would be sufficient.
I also plan to add a mode that is as simple as "something changed", which will let you know when anything about the page is updated. I worry that may cause a lot of notifications though.
Are you the sole support of this app, and if so what's your life expectancy? I'd just like to evaluate this lifetime offer. Age? Do you smoke or vape? Skydive? What's your BMI? Could you post your medical history?
Haha, yes I am. 24 years old, no smoking or drinking. Almost never skydive. BMI of 23.
On a serious note, I have been updating the app every week since it was released two years ago.
