Looking for an F5Bot alternative?
First, credit where it's due: F5Bot is free, reliable, and has run for years. If you want an email for every keyword mention, it does exactly that. Idea Sensai exists for the moment you realize most mentions aren't leads — you want the handful of people actually asking to buy, not every time your keyword appears.
| Feature | Idea Sensai | F5Bot |
|---|---|---|
| Price | Free tier; Pro $19/mo | Free |
| Sources | Hacker News, Stack Exchange, and more | Reddit, Hacker News, Lobsters |
| Buying-intent scoring | AI-scored 0-100, every score explained | None — every mention is sent |
| Noise filtering | Askers surfaced; answerers and chatter filtered | None |
| Competitor switching intel | Tagged automatically (who's leaving which tool, and why) | None |
| Dashboard | Filterable feed with match states | Email only |
| Delivery | Dashboard, daily digest, instant email for hot leads | Email per mention |
When F5Bot is the better choice
- • You want Reddit and Lobsters coverage today — we're HN-only for now.
- • You genuinely want every mention, unfiltered (brand monitoring, vanity keywords).
- • You don't want to pay anything, ever — F5Bot is free and excellent at what it does.
If your problem is too many mentions and too few leads, that's the exact problem Idea Sensai was built for: near-real-time Hacker News monitoring where every match is scored for buying intent and explains itself.