Before you hit post, do you know if it will actually perform? This free tool gives you an AI-powered virality score for any X post draft, so you can improve it before it goes live instead of wondering why it flopped afterwards.

Paste your draft post into the tool and get an instant score based on the signals the X algorithm uses to decide how far to push content. The score is relative to your own account's average performance, which means a high score reflects a strong likelihood of outperforming your usual results, not some generic benchmark.

Built on X's Open-Source Algorithm

When X open-sourced their recommendation algorithm, it gave a rare look into exactly how the platform weights different content signals. This tool was built by analyzing those weights directly. That means the scoring is not based on guesswork or general social media advice. It reflects the actual mechanics of how X decides which posts get pushed to more people and which ones quietly disappear.

Scores That Are Specific to You

A generic virality predictor gives you a number based on broad averages. This tool is different. The score you get is calibrated to your account, so a low score means the post is likely to underperform compared to your personal average, and a high score means it has a strong chance of beating it. That account-level context makes the score far more useful than a one-size-fits-all percentage.

A Smarter Way to Draft Posts

Use it as a final check before publishing. Write your post, run it through the scorer, and if the score is low, use the feedback to adjust the hook, the format, or the structure before it goes live. Over time, you build an instinct for what your audience responds to, backed by data rather than gut feeling.

Free, Private, and Browser-Based

Paste your post, get your score. There is no account required, no data stored on any server, and nothing to install. Your drafts stay private and the tool is completely free to use.