Heptabase vs wordtune

Which should you choose?

These tools serve completely different needs and aren't direct competitors. Heptabase is a knowledge management system for organizing research and learning visually; Wordtune is an AI writing assistant for improving text clarity. Pick Heptabase if you're a student or researcher building a second brain with spatial note-taking and PDF/video annotation. Pick Wordtune if you write frequently (emails, articles, social posts) and want AI-powered rewrites and tone shifting. Heptabase locks you into its paid model after a trial but excels at complex idea mapping. Wordtune offers a free tier with freemium upsell and integrates seamlessly into existing writing workflows (Gmail, Google Docs, LinkedIn). The only overlap is that both claim to help with learning and thinking—but Heptabase *stores* knowledge visually, while Wordtune *polishes* how you express it.