Momentiz — AI Reply for X (Twitter)

Grow on X by replying every day. No reply starts from an empty box — AI drafts it from the post. You edit it. You send it.

Momentiz is built on one idea: on X, showing up every day beats showing up brilliantly once. AI Reply is the piece that makes the daily habit cheap to keep — an AI reply generator that works inside X itself. It puts one button under every post on X (Twitter). Press it and X's own reply box opens with a draft already in it, written from what that post actually says. You read it, change what you want, and press Reply yourself. It never sends anything. It types into the box. Pressing Reply is always you. No queue, no timer, no autopilot, nothing running while you sleep. WHY THIS EXISTS Momentum on X is not one good post. It is being in other people's replies, day after day, for months. What breaks that streak is rarely motivation — it is the empty box, the pause before you know what to say. Enough of those in a row and you quietly stop showing up. This removes the pause and leaves the judgement to you. WHAT IT DOES • Adds an "AI Reply" button to posts on x.com and twitter.com • Opens X's normal reply composer with a draft already in place • Describes images in the post using Chrome's built-in on-device model, so the picture itself never leaves your computer • Lets you set the language, the length, and whether emoji are allowed WHAT IT DOES NOT DO • It does not post, reply, like, follow, or repost for you • It does not queue replies and it does not run on a timer • It does not read your timeline in the background. It reads a post only when you press the button on that post • It does not touch X's internal APIs WHO IT IS FOR Founders building in public, writers growing an audience, and anyone who grows by showing up in other people's comments instead of shouting into their own timeline. If you already reply every day, this makes the habit cheaper to keep. If you keep meaning to start, this removes the part that stops you. PART OF MOMENTIZ AI Reply is one piece of momentiz.app. The rest of it holds your posting calendar, the weekly slots your posts go out on, and Post Coach, which scores a draft from 0 to 100 before you publish it. Replies are where momentum starts; the calendar is where it keeps going. Drafting runs on momentiz.app and needs an account there. Press Connect in the extension panel while you are signed in and the two link themselves — there is no key to copy across. PRIVACY The text of the post and the author's handle are sent to momentiz.app so the draft can be written. Images are described on your own machine; only that one-sentence description is sent. Nothing is read until you press the button. Full policy: https://momentiz.app/privacy Momentiz is an independent product. It is not affiliated with, endorsed by, or sponsored by X Corp.