Summary comments are bad for HN discussion. They're actually off-topic, because the topic is X, not "what is X about". It's also not a legitimate way to promote your startup, so please stop.
You're the boss, but my personal view is that this is a very legitimate way to promote his Apply HN:
it is a summary from the post (I've always appreciated TL;DR comments);
it is a demo of the product (it does not supplicate for upvotes through any sort of friendship appeal, only invites those from a legitimate audience who liked the demo to support his Apply HN);
From the FAQ:
Can I ask people to upvote my submission?
No. Users should vote for a story because it's intellectually interesting, not because someone is promoting it.
Well, this is promotion, but also it is a promotion that ask you to judge if the idea is interesting and upvote if you agree.
The original post announcing Apply HN encouraged one to convince the community of the value of one's idea/application, I considered providing the service to HN (which is the initial target audience) as way of doing exactly that. You are the final authority on what is appropriate here and what is not, so I'll stop. Sorry for any inconvenience caused.