I’m building DBT Companion, a free guide to skills commonly taught in dialectical behavior therapy. It includes concise practice steps, a guided skill finder, favourites, and a private diary card. No account is required; diary cards stay in encrypted browser cookies and are lost if those cookies are cleared. It is educational and does not replace therapy, crisis care, or professional support. I’d value feedback on mobile usability and the privacy explanation. https://dbt-companion.org/