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Replyfast
$4.99Starting price
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About Replyfast
Replyfast is a Chrome extension designed to assist users in crafting replies to posts on X (formerly Twitter). It generates three distinct reply tones—Friendly, Professional, and Humorous—on every request, allowing users to select the most appropriate draft for the context. The tool operates directly within the X interface, eliminating the need to copy posts into external AI tools like ChatGPT. Users can generate replies with a single click, and the drafts are automatically pasted into the composer, streamlining the response process. Credits for generating replies do not expire and are consumed only when used, with no monthly reset. Replyfast does not post replies automatically; users retain full control over publishing. It is primarily targeted at founders, indie creators, and professionals who engage frequently on X and seek to maintain a consistent voice without spending excessive time composing replies.
Key features
- Three fixed reply tones: Friendly, Professional, Humorous
- Direct integration with X interface
- One-click generation and draft insertion
- No expiration on purchased or granted credits
- Context-aware replies using post and ancestor chain
- No automatic posting or scheduling
- Signup grant of 20 credits
- One-time credit purchases with no monthly wipe
Use cases
- Drafting professional replies to industry posts
- Generating humorous responses to viral content
- Creating friendly engagement in community discussions
Pros
- Generates three reply tones per request
- Operates as a Chrome extension within X
- Credits do not expire and are consumed only when used
- No automatic posting; user retains control
- Eliminates the need to copy posts into external AI tools
Cons
- Requires Chrome browser
- No free tier available
- Limited to X platform only
Frequently asked questions about Replyfast
What is Replyfast?
Replyfast is a Chrome extension for X (formerly Twitter) that generates three reply tones—Friendly, Professional, and Humorous—directly within the X interface. It helps users draft replies quickly without leaving the platform or using external AI tools.
Does Replyfast post replies automatically?
No. Replyfast never sends, schedules, or publishes replies. It pastes drafts into the composer, and users retain full control over publishing decisions.
What does Replyfast read to generate replies?
Replyfast reads the post you are replying to, along with the ancestor chain needed to draft replies in context. It does not post as you or send direct messages.
How do credits work in Replyfast?
Credits do not expire and are consumed only when used. They are granted upon signup and can be purchased in packs, with no monthly reset.
How do I install Replyfast?
Install Replyfast from the Chrome Web Store, then open any X post and use the extension to generate replies directly within the interface.
What are the three reply tones in Replyfast?
The three fixed tones are Friendly, Professional, and Humorous. Friendly is conversational, Professional is clear and concise, and Humorous is lighthearted and brief.
