ReplyDeck — Scheduled Reddit Replies

Grow your Reddit presence on autopilot. ReplyDeck posts AI replies in your voice using your own API key. Free tier, no time limit.

You know Reddit works. Threads show up in Google, get cited by ChatGPT and Perplexity, and reach people actively searching for what you know. The problem is staying active across 10 subreddits every day without burning out or sounding like a bot. ReplyDeck handles it. You build a persona — tone, vocabulary, backstory, interests, example replies — and point it at your subreddits. It finds relevant posts, drafts a reply in that voice, and posts it on a randomized schedule so your activity looks natural. Different subreddits get different voices. You define who is replying, not just what to say. It runs on your own AI API key (OpenAI or Anthropic). Your key stays in your browser. We never see your prompts, your replies, or your Reddit data. Safety is specific, not vague. Filters strip 15 AI-sounding phrases ("certainly," "as an AI," "game-changing"), block profanity and harmful content, and skip political and religious topics. Five rules, all configurable, all on by default. The reply monitor watches your profile and auto-deletes any reply that gets downvoted past your chosen threshold — damage control that runs while you sleep. A built-in risk indicator warns when your pacing looks aggressive. Setup takes two minutes: 1. Create a persona (or describe one in plain text and let AI generate it) 2. Add your API key 3. Choose subreddits and hit Start Your first reply posts in under three minutes. Every reply is logged with a direct link so you can review what went out. Test any persona in preview mode before going live — see exactly what it would post on a real thread, without posting. Free tier: one persona, no time limit, no credit card. Pro ($29 one-time, no subscription) unlocks unlimited personas, OpenRouter access (100+ models), higher daily limits, and cross-browser sync.