Built an AI writing platform with 89 tools, then added something most of them don't have: fact-check (it checks its own work)
Been building letsflw for a while and wanted to share where it's landed.
What it is: an AI writing platform 89 AI-powered tools plus 16 free local ones, covering paraphrasing, grammar fixes, blog generation, SEO audits, resume building, and more. There are also Workflows that chain multiple tools together for bigger tasks, and Automations for repetitive work like bulk content generation from a CSV.
The part I'm actually proud of: Fact-Check. Most AI rewrite tools will paraphrase or rewrite your text and just hope nothing important changed. Fact-Check is built into 19 of the tools it checks your output against your original source, claim by claim, and flags anything unsupported, contradicted, or quietly changed from a hedge into a flat certainty. Every flagged claim shows exactly which part of your source backs it up, or doesn't. If it genuinely can't verify something, it says so instead of guessing.
There's also an Auto-Fix step: it proposes corrections, you review and accept or reject each one individually, and nothing gets silently rewritten behind your back.
Growth: 100% organic so far no paid acquisition, just building in public and listening to what people actually ask for.
Try it at letsflw.com genuinely curious what breaks the fact-checker. Some of the best improvements so far have come from people trying to find its edges.
It sounds like you've got a robust platform there, and having that many tools can definitely attract users. I've found that focusing on user experience is crucial as you scale.
For my own project, I started with a few core features for content generation and SEO optimization and then slowly expanded based on user feedback. Real user insights helped me understand which tools were truly beneficial versus those that just cluttered the platform.
Also, building in ways for users to benchmark their performance has been valuable. For instance, I found that integrating simple analytics for tracking content performance helped users see tangible results from using the platform, which increased engagement.
If you're looking to expand your offering while keeping things streamlined, consider developing specific workflows or templates that guide users on how best to use all those tools effectively rather than just listing them out. It could raise their satisfaction and retention significantly.
One platform that I've personally found useful for content optimization is Scaleblogger, especially when it comes to managing and optimizing SEO efforts efficiently. It’s about making sure the tools you offer create real value and clarity for your users.
Fact-Check is the only part of this I'd pay for, and I think 89 tools actually buries it "flags when a hedge quietly became a flat certainty" is a sharper pitch than a tool count, because that's the failure mode that gets people in trouble after an AI rewrite. The Auto-Fix design where you accept or reject each correction individually is the right call too; silent rewrites are why people stop trusting these tools. If it were me I'd make Fact-Check the front door and let the other 88 tools be what people find later.
That's fair, and it's actually part of why the standalone Hallucination Checker exists as its own tool at its own URL rather than only living inside the 19 it's meant to be exactly the kind of front door you're describing, something a stranger can land on without wading through the other 88 first.
Homepage positioning is a separate question though, and you're probably right that it's still tool-count-first there. I've been hesitant to rewrite that on a single comment's instinct even a good one versus actually checking whether Fact-Check is what people click through to when they land, or whether the framing you're describing performs the way it should. That's a real thing to go test, not just agree with in a reply.
"Flags when a hedge quietly became a flat certainty" is a better line than I've been using anywhere on the site, honestly. Might just steal that verbatim.