Free Marketing Tools
10 free tools across email, LinkedIn, ad copy, and personality assessment. No signup. No credit card. Most return a result in under 30 seconds.
Every tool below uses the same multi-framework engine that powers COS — Engagement, Personality (OCEAN), Strategic Clarity, and Framing analysis. The free tier covers the diagnosis; the paid tier covers the iterative rewrite + tone calibration.
Content Optimization
Paste any draft. Get a 1-10 score across 4 frameworks, the dimension that's strongest, and the dimension that's broken — before you send or publish.
Subject Line Tester
Score any email subject line across 5 OCEAN dimensions. Get the per-dimension fix to lift open rates before you send.
A/B Subject Line Comparator
Paste two subject lines side-by-side. See which dimension each one activates and which actually fits your audience — not just which "feels" better.
Cold Outbound Analyzer
Paste a full cold email or DM. Get a coverage check that flags subject-to-body mismatches and the dimensions your draft is missing.
LinkedIn Post Analyzer
Score a LinkedIn post draft before publishing. Check whether your hook, structure, and CTA match your target audience's profile.
Ad Copy Analyzer
Paste a Google or Facebook ad. Get a 4-framework score against your target audience's personality — before you push spend.
Personality & Profile Tools
Self-assessments and profile inference tools built on the OCEAN (Big Five) framework — the same model COS uses to match content to audience.
LinkedIn Profile Analyzer (OCEAN)
Paste a LinkedIn profile bio. Get estimated Big Five personality dimensions and buyer persona insights to inform B2B outreach.
OCEAN Big Five Assessment
20-question self-assessment. Discover your OCEAN profile and how your personality shapes the way you write, sell, and persuade.
DISC Personality Assessment
24-question DISC assessment. Discover your primary + secondary behavioral styles with an OCEAN translation for buyer matching.
Personality Type Test
28-question personality type test. Discover your 4-letter type across Jungian dimensions with an OCEAN Big Five translation.
MBTI to OCEAN Translator
Already know your type? Translate any MBTI code to Big Five (OCEAN) traits instantly, with confidence ratings on each dimension.
Want all 7 frameworks + unlimited analyses + iterative rewrites? COS is the paid platform behind these free tools — same engine, no per-day limits, plus persuasion + platform + quality frameworks the free tools don't expose. See pricing.
Start With Any Tool — No Signup Required
Most users start with the Subject Line Tester or LinkedIn Profile Analyzer. Both return a result in about 10 seconds.
Free to try • No signup • Your content stays private