Hi Product Hunt 👋 I built Pensa because every writing tool I tried was checking the wrong layer. Grammarly and its descendants will happily flag a comma splice in a paragraph whose central claim doesn't follow from its own evidence — and say nothing at all about the second part. Pensa only looks at the second part. It reads one paragraph at a time and asks four questions: Does the reasoning hold? Non sequiturs, circular arguments, false dichotomies, conclusions that don't follow from the premises. Are the details right? Dates, names, numbers, and causal claims that are false, widely disputed, or suspiciously precise without a source. Is the argument built properly? Missing topic sentences, buried claims, paragraphs trying to do two jobs at once. Is the evidence doing its job? Unsupported assertions, evidence attached to a claim it doesn't actually support, quotes left unanalyzed. It deliberately ignores grammar, spelling, and punctuation. Other tools do that well, and I didn't want the findings that matter buried under a pile of comma notes. Every issue quotes the exact span it's about, explains the problem in language a student can act on, and suggests a specific fix — never "be more clear." Free: one document, five paragraph checks a month. Premium: $15/month or $120/year, 1,000 checks a month. PRODUCTHUNT takes 50% off your first three months — enter it at checkout. What I'd genuinely like to know is where it gets things wrong. It's tuned to be exacting but proportionate: a short, correct paragraph should score well and report nothing. If it invents problems in your writing to look thorough, that's a bug, and I want to hear about it.

Pensa

Logic and fact checks, paragraph by paragraph

Logic and fact checks, paragraph by paragraph