Reply in your own voice, post stronger, and know who follows you back.

No, never. It fills the reply box when you press Use. Posting is always your click.

ReplyFit is built to stay inside both sites’ rules: it writes replies only when you ask for them, never posts, likes or follows, and makes no requests to X or Instagram of its own. X allows AI help with writing that you then post yourself. What both sites penalise is spam: lots of near-identical replies, fast. That is up to how you use it, and it is why you choose every reply yourself and why the daily limit starts low and grows only as you use it, the way a real account’s activity grows.

No. ReplyFit is an independent extension, not affiliated with or endorsed by X Corp. or Meta. X and Instagram are their trademarks.

It reads the “Follows you” label on their profile on X, or the “Follow Back” button on Instagram, when you open it. It never walks follower lists.

Instagram only shows Follow Back when they follow you and you do not follow them. If you follow each other, the page looks the same as if they did not, so ReplyFit says it cannot tell rather than guess.

Each draft is checked for that before you see it, and written again once if it fails. You set a “never use” list for the phrases you hate.

Nobody can promise that, and ReplyFit does not. What it does is give each post its best shot: the strongest line first, one clear point, short lines, and no hashtag stuffing or bait that X pushes down. Each version is checked for a strong opening and for keeping what you meant.

Yes, on X. Type something longer than one post and press Make it a thread: ReplyFit splits it into 2 to 8 posts of up to 280 characters each, with a Copy button on every post (and Copy all), so you paste them into X’s thread one by one. A thread counts as two drafts.

On paid plans it grows with use: tomorrow you can do up to twice what you did today, up to your plan’s ceiling (100 on Starter, 300 on Pro and Growth). A day off starts again from the plan’s starting limit. It keeps your account’s activity growing the way X expects from a real person.

After checkout you get a licence key by email. Click the ReplyFit icon, paste the key and press Activate; the popup shows your plan. One key works on up to 3 browsers, and they share one allowance.

Each press of Write reply, Refine, Write a viral post, Make it viral or Rewrite & format counts as one draft and gives you one reply or post; if it is written again because it missed a check, that is free. A thread counts as two. Pressing the orange button costs nothing. You can make up to 10 drafts a minute, a pace no person replying by hand needs to go past.

The first 10 people to subscribe to Pro pay $5 for their first month, and the next 20 pay $7, with the code shown on the plans page. It covers the first month only; after that Pro is $15 a month. One per customer. The plans page shows how many are left, counted from real sign-ups.

Yes. Type your reply, press the orange ReplyFit button in the reply box, then Refine what I wrote. You get a cleaner version that is checked to keep your meaning, and Use replaces your text.

Open your billing portal from the link in your receipt email and switch plans there; you pay only the difference for the rest of the month. A new key for the new plan arrives by email: paste it into the ReplyFit popup and press Activate. The old key stops working.

Claude Sonnet 5.5, made by Anthropic, on every plan, free included. Only if it is ever down or too slow does Claude Haiku 4.5 step in, so you are not left waiting. Plans differ only in how many drafts you get.

Yes. Email us within 14 days of the charge and we refund it in full, no reason needed. If most of the plan was already used, we may refund the unused share instead.

It is in review for the Chrome Web Store. Join the waitlist and you get one email on launch day.