ReplyGuy
Quick answer
ReplyGuy uses AI to find relevant conversations about your product on Reddit and Twitter/X, then drafts or posts replies that mention it, with sentiment analysis and notifications. For Reddit it uses accounts provided to you by email; for Twitter it suggests replies that you edit and post yourself. A free trial is available. Monthly plans run from Analyst at $39 (mention monitoring, no auto-replies) through Pro $49 and Business $99 to Enterprise at $199 and Agency at $499.
Best for
A founder or small team that wants AI-drafted replies to Reddit and Twitter/X mentions of a product.
Not for
A team that wants monitoring beyond Reddit and Twitter/X, or AI-answer visibility tracking.
Facts
Pricing
- Analyst: $39/mo
- Pro: $49/mo
- Business: $99/mo
- Enterprise: $199/mo
- Agency: $499/mo
From ReplyGuy's website, checked Oct 2026.
Free plan or trial
Free trial available
From ReplyGuy's website, checked Oct 2026.
Sources covered
Reddit, Twitter/X
How MarketHQ compares
| Feature | MarketHQ | ReplyGuy |
|---|---|---|
| Entry price | Free (paid from $29/mo) | $39/mo |
| Free plan or trial | Free tier, no card required | Free trial available |
| Sources covered | Hacker News, GitHub, RSS, Stack Overflow, Dev.to, Lobsters, Reddit, LinkedIn, YouTube, X, Perplexity, Product Hunt, Broader web crawl, Bluesky | Reddit, Twitter/X |
| AI engines tracked | ChatGPT, Claude, Gemini, Perplexity, Grok, DeepSeek | Not published |
| API / MCP | Yes, on every paid plan | Not published |
Alternatives
- MarketHQ: tracks brand mentions across communities, news, blogs, social and AI answers, with gap analysis and action plans.
- Alert HN: A developer who only wants free, fast email alerts for Hacker News mentions.
- KWatch.io: A team that wants real-time keyword alerts across LinkedIn, X, Reddit and Hacker News at a low monthly price.
- Notifier: A team that wants broad Reddit, Hacker News and social alerts with AI filtering at a modest monthly price.
- Octolens: Teams that want community and social monitoring with API and MCP access on every plan.
- Pulse: A team that wants Reddit lead discovery and AI-visibility scanning in one tool.
- Redreach: A team focused on Reddit that wants AI-guided replies and DM outreach.
Related
- Best AI visibility and brand monitoring tools: category shortlists with a disclosed method.
- Glossary: definitions of the terms that come up when comparing tools like this one.
Sources
- ReplyGuy: https://replyguy.com (checked Oct 2026)