The complete information architecture research platform.
kardSort is a SaaS tool used by UX designers, product teams, and researchers at companies ranging from startups to enterprises. It combines card sorting, tree testing, and first-click testing in a single platform with built-in analytics (50+ KPIs), AI-powered insights, integrated participant recruitment via Prolific, and multi-language support across 7 languages.
Card Sorting
Discover how users group and label your content.
- Open, closed & hybrid study types
- Rich media - image, audio, video, and YouTube cards
- XLSX import and card duplication across categories
- 15 KPIs including similarity matrix, dendrogram, ambiguity, agreement, co-occurrence, and split-half reliability
- Power Filter to segment by questionnaire answers
- Casolysis & SynCaps export for external analysis
Tree Testing
Validate navigation before you ship.
- Import from text, sitemap.xml, or a completed card sort
- Multiple correct answers per task
- 25+ KPIs across 5 analytics tabs - success rates, directness, path analysis, Sankey flows, node visit heatmaps
- Link to card sorts for cross-study IA correlation
First-Click Testing
See where users click first on your designs.
- Upload screenshots, wireframes, or import from Figma
- Draw correct click areas
- 16 KPIs - heatmaps, click accuracy, time-to-click, misclick hotspots, correction rate
- CSV export and multi-click corrections
AI-Powered Features
- Study Analysis - 3–5 evidence-linked findings from your analytics, each citing the exact KPI and linking to the supporting chart
- Normalization - auto-group synonyms, spelling variants, and junk entries in card labels
- Study Setup - generate questionnaire items and page content from a project description
- Privacy-first - no PII sent, no training on your data, every claim traceable to participant data
Built Into Every Study
- Built-in analytics with 50+ KPIs
- Pre- and post-study questionnaires
- CSV export for every study type
- 7 participant languages
- Recruit participants via Prolific at base rate with no markup
- Mobile-friendly participant UI
- Password-protected studies with scheduled start and end dates
Pricing
Start free with full analytics. Premium at €99/year includes AI features and everything kardSort offers. No per-credit billing.