A Chrome extension that studies your past writing on LinkedIn and X, then generates context-aware replies that actually sound like you. Not another generic AI parrot.
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FliesReplies solves a real problem for people who need to stay visible on LinkedIn and X but cannot spend 45 minutes crafting thoughtful replies to every post in their feed. The voice model is the differentiator here. If you are a founder, sales professional, or creator who engages heavily on these platforms and you are tired of AI replies that read like they came from a customer service bot, this is worth the $24/month. The free trial is generous enough (15 replies, no credit card) to know within an hour whether the voice matching actually works for your writing style.
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At $24/month for up to 1,500 replies, you are paying roughly $0.016 per reply. For context, spending even 2 minutes writing a reply manually at a $50/hour rate costs about $1.67. The math works if you are engaging at volume.
Import your past comments and posts. FliesReplies builds a writing profile from your actual language patterns, tone, and vocabulary. This is the core feature that separates it from generic AI reply tools.
Every time you edit a generated reply before posting, the model learns from your correction. The more you use it, the less editing you need. A feedback loop that actually improves over time.
The extension reads images in posts, not just text captions. This means replies to carousel posts, infographics, and screenshots are actually contextually relevant instead of vaguely generic.
Train separate voice models for LinkedIn and X. Smart design choice. Most people write differently on each platform, and a single voice model would produce awkward results on at least one of them.
Define your areas of expertise and the tool keeps replies aligned with your professional positioning. Prevents the AI from drifting into topics where you have no authority or interest.
Test the voice model on sample posts before going live. Useful for calibrating the model and building confidence that the output will not embarrass you in front of your network.
Track your reply volume, engagement patterns, and usage over time. Helpful for measuring whether your increased engagement is actually translating into visibility and connections.
One extension covers both LinkedIn and X. No need to install separate tools or manage multiple subscriptions. The extension activates contextually when you are on either platform.
If you know LinkedIn engagement drives pipeline but you cannot justify spending an hour a day commenting, FliesReplies lets you maintain a consistent presence. The voice model matters here because your network will notice if replies suddenly sound robotic.
Engaging with prospects' posts is a proven warm-up strategy. But doing it for 20+ prospects daily is brutal. At 300 to 1,500 replies per month, the volume tiers are clearly designed for this use case. The content pillars feature keeps you on-brand.
Creators who have built a recognizable voice cannot afford to break character. The per-platform voice training is particularly useful if your LinkedIn persona is more polished than your X presence. Consistency is the whole game.
Some people know they should engage more but stare at the reply box for five minutes and give up. FliesReplies gives you a starting draft to work from. Even if you edit every reply, having a first draft eliminates the blank-page problem.
No Firefox, Safari, or Arc support. If you are not on a Chromium browser, you are out of luck. No mobile app either, which means you cannot use it when scrolling LinkedIn on your phone.
The voice model needs your past comments to work well. If you have not been active on LinkedIn or X, the initial output will be mediocre. You need a meaningful comment history to import, or you will need to invest time in the Co-Pilot learning loop before results feel natural.
The monthly plan ranges from 300 to 1,500 replies depending on your tier, but the pricing page is not entirely transparent about what each sub-tier costs. Heavy users on both platforms could hit limits. Worth clarifying before committing.
LinkedIn and X are the only supported platforms. No support for Threads, Bluesky, Reddit, or any other community where engagement matters. If your audience lives elsewhere, this tool does not help.
FliesReplies appears to be built by a solo developer (Jo-Remi Saada). That is not inherently bad, but it means feature velocity, support responsiveness, and long-term viability carry more uncertainty than a venture-backed tool.
15 free replies, no credit card. Enough to know if the voice model works for you.
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