Grow Progress

Science-based message testing platform using randomized controlled trials to measure which messages actually persuade target audiences. AI-powered Persuasion Sandbox rapidly drafts message variants. Persuasion Library aggregates results from past tests.

Category: Research & Intelligence · Pricing: Paid

Best for

Communications directors and consultants who need data-backed evidence on which messages move voters — not just gut instinct or focus groups.

Features

  • Randomized controlled trials
  • AI message variant generation
  • Persuasion Library of past results
  • Demographic targeting for tests

Pros

  • Evidence-based — actual persuasion measurement not just preference
  • Progressive-aligned and values-conscious
  • Builds institutional knowledge across campaigns

Things to know

  • Paid platform — not accessible for very small orgs
  • Requires some research literacy to interpret results