ReplyKit: AI Reply Generator & Radar for X

Find the X (Twitter) posts worth replying to, then get 3 reply drafts in your voice in one click. 10 free on day one, no API key.

AI reply generator for X (Twitter), LinkedIn and Reddit that finds the posts worth answering and drafts 3 replies in your voice, right in the reply box. You pick one, edit it, and post it yourself. Free to start: 10 replies on your first day, no account, no API key, no credit card. Every plan writes with Claude Sonnet. WHY REPLIES Small X accounts grow in the replies. A sharp reply under a bigger post is read by that post's audience, people tap your name, some of them follow. The hard part is knowing which posts are worth it, and writing 20 good replies a day without it eating your evening or sounding like a bot. ReplyKit does both, inside X. OPPORTUNITY RADAR: WHERE TO REPLY As you scroll, Radar marks the posts worth answering right now: in your niche, from accounts with a real audience, and early enough that your reply still gets seen. Each badge shows the author's follower count and how crowded the replies are, and it skips tiny accounts (you choose the floor: 1K, 10K or 100K followers). One click opens the reply with drafts already written. Scoring runs in your browser and sends nothing. ONE CLICK, THREE DRAFTS Hit ✨ Reply and ReplyKit reads the post and the conversation above it, then picks the move that fits: a joke about one exact detail, an insider fact, a counterexample, a question worth answering, or agreement with something added. Three different drafts appear side by side. Insert one into X's reply box (or copy it), or Retry for three new ones. Want a particular angle? Steer with Funny, Insight, Agree or Push back. REPLIES THAT SOUND LIKE A PERSON, AND LIKE YOU Drafts are short, usually one sentence, and about this post rather than any post. No lecturing the author, no made-up stats, and none of the tics that give away AI writing: no em dashes, no "it's not X, it's Y", no "Great point!". ReplyKit replies in the language of the post. Optionally, it reads your own recent X posts once and learns how you write: your casing, your usual length, your humour, your topics. From then on every draft is written your way. You can re-learn or forget your voice anytime. LINKEDIN COMMENTS AND REDDIT REPLIES The same panel appears under LinkedIn's comment box and Reddit's reply box, with a style tuned to each: professional and specific on LinkedIn, plain and casual on Reddit. NEVER POSTS FOR YOU ReplyKit only writes suggestions. It never posts, likes, follows or messages on your behalf, and it never asks for your X, LinkedIn or Reddit password. You read every reply and press Post yourself, which is also what keeps your account safe. MORE THAN REPLIES • Your own posts: open an empty composer on X and get three post drafts built on your topics, or a thread that goes straight into X's composer, one tweet per box. • Polish my draft: type a rough thought, hit Polish, and ReplyKit tightens it while keeping your point. • On your phone: paste a post into the ReplyKit web app (replykit.eu/app) and copy the reply back. • In your language: the interface speaks English, Spanish, Portuguese, French, German, Italian, Japanese, Korean, Chinese and Indonesian. PLANS • Free, no account: 10 replies on your first day, then 3 a day. Radar badges included. • Free account (Google in one click, or an email code with no password): 5 replies a day. • Pro, 6.99 €/month: 1,000 replies a month with no daily cap, plus the Radar list (a ranked shortlist of the best posts you scrolled past) and target accounts. Replies are written the same way on every plan. Cancel anytime. PRIVACY Generation runs through ReplyKit's hosted service, so there are no API keys to manage. When you ask for a draft, it sends the post you are answering, the thread above it, your topics and writing settings. Signing in gives us your email address and nothing else from your Google account. If you choose "Learn my voice from X", ReplyKit reads your own recent public posts in your browser and sends them, with your handle and bio, to build a short style profile kept on your device. To improve quality we may log prompt/reply pairs with only a plan label attached. Full policy: replykit.eu/privacy - ReplyKit is built and maintained by one developer. Found a bug, or a reply that missed? Hit 💬 Feedback in the reply panel or the popup. It goes straight to the developer, and it gets read.