# Justify > Evidence for influencer marketing. Justify Ltd is a UK company (no. 16000647, ICO ZB940295) that provides causal brand lift measurement, pre-live creative testing, creator discovery, and independent campaign measurement. Built for brands and agencies who need CFO-readable proof that influencer marketing works, not reach × engagement × vibes. The full estate in one file: https://justify.app/llms-full.txt. Every page also has a Markdown mirror: append `.md` to its URL (for example https://justify.app/platform.md). ## What Justify does - **Brand Lift**: Exposed-versus-control brand lift studies with p-values and 95% confidence intervals, built for influencer campaigns. - **Creative Testing**: Pre-live, head-to-head creative testing on synthetic + real audiences before you spend media. - **Influencer Marketplace**: Creator discovery on evidence, not follower counts, with risk reports and shareable shortlists. https://justify.app/influencer-marketplace - **Methodology**: Independent measurement layer, neutral on the media we measure: no conflict, because we do not sell media. ## How Justify is different - **Independent**: We do not sell influencer media. Measurement and media-selling are a conflict of interest; we only do one. - **Causal**: Every claim is backed by a pre-registered study with a control group. No surrogate metrics, no EMV, no vanity. - **Creator-fair**: 0% commission on creator payments. Platforms that tax talent 20% lose the best talent. - **CFO-ready**: Every lift report is auditable. Board-defensible numbers, not slides full of emojis. ## Pricing - Starter: GBP 249 / USD 299 / EUR 299 a month; GBP 2,499 / USD 2,999 / EUR 2,999 a year. Shown in the visitor's currency: GBP in the UK, EUR in the eurozone, USD elsewhere. - Essential: Let's talk pricing. - Professional: Let's talk pricing. - Advanced: Let's talk pricing. ## Company - Founded 2024, Cambridge, UK. Fully remote, four timezones. - Company number 16000647. ICO registration ZB940295. - Contact: public contact form or chat on every page (launching shortly). To get started, sign up at https://justify.app/sign-up ## Key pages - [Homepage](https://justify.app/): Overview of the loop: plan, concept, execute, prove influencer marketing with evidence. - [Brand Lift](https://justify.app/brand-lift): Measure real lift. - [Creative Testing](https://justify.app/creative-testing): Pre-live, head-to-head. - [Methodology](https://justify.app/methodology): How we measure. - [Pricing](https://justify.app/pricing): Starter listed monthly plan; Essential, Professional and Advanced custom plans. - [Customers](https://justify.app/customers): Case studies. - [For brands](https://justify.app/brands): Small brands and mid-market VP Marketing teams: causal brand lift the CFO will sign off on. - [For agencies](https://justify.app/agencies): Boutique to mid-large agencies: white-label, win the pitch with proof. - [For creators](https://justify.app/creators): Free, 0% commission, payouts via Stripe Connect. - [For talent managers](https://justify.app/talent-managers): 12 creators, one screen: replace WhatsApp, spreadsheets and inbox. - [MCP server](https://justify.app/mcp): Model Context Protocol server for AI agents: Claude, Cursor, any MCP client. Influencer Marketplace tools live now (search, personas, sourcing, vetting). Creative Testing and Brand Lift coming soon. Included on Essential plan and above. - [Platform](https://justify.app/platform): The whole workflow on one page: plan campaigns, test creative and prove what moved. - [Campaigns](https://justify.app/campaigns): Brief, creators, assets, approvals and payments in one campaign workspace. Creators keep 100%. - [Influencer Marketplace](https://justify.app/influencer-marketplace): Creator discovery on evidence, with risk reports and shareable shortlists. - [Campaign Canvas](https://justify.app/campaign-canvas): One live shareable link showing the whole campaign and whether it worked. No login, no deck. - [Campaign Library](https://justify.app/campaign-library): Every asset, concept and past campaign in one record. - [Risk Reports](https://justify.app/risk-reports): Independent brand-safety screening before you brief a creator. - [Outreach](https://justify.app/outreach): Outreach to approved content, one workspace. - [Payments](https://justify.app/payments): Money held safely, released on approval. Creators keep 100% of the agreed fee. - [Commerce](https://justify.app/commerce): Shopify and WooCommerce integrations. Uncover surfaces creators already buying from you. Gifting and seeding programmes run directly through your store, with attribution back to campaign reports. - [Events](https://justify.app/events): Industry events we attend and host. Flagship week is Cannes Lions 16–20 June 2026; live coverage at cannes.justify.app. - [Contact](https://justify.app/contact): Message the team or book a demo. ## Articles - [How to test an influencer video before it goes out](https://justify.app/blog/how-to-test-an-influencer-video) - [Influencer brief template: free, with UK ad rules built in](https://justify.app/blog/influencer-brief-template) - [Always-on micro-influencers, without a bigger team](https://justify.app/blog/how-to-work-with-more-influencers) - [How to decide which influencers to book again](https://justify.app/blog/which-influencers-to-book-again) - [Case studies: influencer campaigns, measured · Justify](https://justify.app/case-studies) - [The Justify blog: influencer marketing, measured](https://justify.app/blog) - [The week in evidence: influencer marketing news · Justify](https://justify.app/news) - [The week in evidence, 14 September 2026 · Justify](https://justify.app/news/2026-09-14) - [The week in evidence, 13 July 2026 · Justify](https://justify.app/news/2026-07-13)