Is there any app recommendations which does help in this process?
It lists entries in a chronological view and let's you filter it by top 10/20/50%/frontpage/all. I've been using it as default HN client for years now and really recommend it.
This is how my workflow looks like if ‘top story on HN’ then ‘slack me’ Now when I created this workflow, I was expecting to get results when something hits the front page-top news but what I saw was—it giving me news with even 2 upvotes sometimes and that thing wasn’t even there on the first page. Honestly it’s a mystery to me. In fact I even tried comparing ‘new section’ with the results I was receiving and they didn’t match! You can check this on IFTTT hackernews just select top news when creating your workflow. Also what I realized was these news hit the top section a while later the notifications-not all but a lot.
If you use Telegram, subscribe to the Hacker News Feed channel (top stories with 100+ points). 
I read the newest posts as they reach 500 upvotes delivered to my RSS reader (feedbin).
Is it only using hacker news as a source, or other sites too? I only saw HN links, but I didn't look at them all.