SubWatch.io monitors Reddit and Hacker News for your keywords 24/7 and alerts you the moment someone asks for a product like yours — via web dashboard, email, or SMS. Bluesky coming soon.
Web dashboard + Chrome extension · Free plan available
Every day, thousands of people post things like “anyone know a good tool for X?” or “looking for an alternative to Y” across Reddit and Hacker News. The first founder to reply with a genuine, helpful answer almost always wins the customer. But you can't be watching every thread all day. SubWatch.io can.
A focused tool that does one thing extremely well.
Track any keyword across any subreddit. SubWatch.io scans new posts and comments every 2 minutes so you never miss a mention.
Get notified the instant a match is found — browser notification via the extension, or email and SMS from the web dashboard.
Manage keywords, browse your leads, and configure notifications from any browser — no extension required.
Choose between partial, exact, or regex matching. Find "looking for a CRM" without being drowned in false positives.
Every match is saved so you can review, filter, and reply on your own schedule. Save posts to revisit later.
Open any matched post or thread directly from the extension or dashboard, reply box ready to go.
Start free. Upgrade when you're ready.
Try it out with no commitment.
For founders and marketers serious about finding leads.
Pay once, use forever. No subscription.
Reddit and Hacker News today, with Bluesky coming soon. Your keywords apply across every source — Reddit matches are scoped to the subreddits you choose, while Hacker News is searched platform-wide.
Manual search means you have to remember to check it. SubWatch.io runs in the background 24/7 across every source and notifies you the moment a match appears, so you can be the first to reply.
Either works. The web dashboard gives you full access to keywords, matches, and email/SMS notifications from any browser. The Chrome extension adds real-time browser notifications and quick access from your toolbar.
SubWatch.io monitors public subreddits only. Private subreddits require membership and are not accessible via the Reddit API.
Every 2 minutes. Pro users receive email notifications as frequently as every 15 minutes. Free users see a 2-hour delay on results.
No. SubWatch.io only reads public content. Replies are always manual — we open the post or thread for you, but you write and submit the reply yourself.
Yes, anytime. Cancel from the dashboard settings page. You keep Pro access until the end of your billing period.
Free forever. No credit card required.