Cladewright: Tree Studio

Cladewright is a private phylogenetic tree workspace for Newick and NEXUS files. Keep multiple trees in a local library, inspect topology and branch lengths, join trait metadata, compare trees, test whether your groups form clades, and export a complete analysis packet without creating an account or uploading research data. NEW IN 2.0 - Compare Trees: Robinson-Foulds distance, split agreement, and the clades unique to each tree, computed on the taxa both trees share. - Tree statistics: cherries, polytomies, Sackin and Colless balance indices, and root-to-tip spread. - Group monophyly: every trait group is checked against the current root, with intruding taxa named. - Rename or remove taxa from the node inspector, with undo for rename, remove and reroot. - Patristic distance between any two taxa. - Multi-tree NEXUS files import every TREE statement as its own tree. - Back up the whole library to a file and restore it later; restoring never deletes or overwrites trees. TREE LIBRARY - Import a Newick or NEXUS file, paste tree text, or begin with one of three worked examples. - Keep multiple projects on the device, duplicate a tree before editing, and return to recent work instantly. - Parse quoted taxon labels, nested comments, support values, branch lengths, NEXUS tree blocks, and TRANSLATE tables. - Receive an explicit error when malformed or unsafe branch-length data cannot be interpreted. VISUAL INSPECTION - Switch between rectangular and radial layouts, each with topology or branch-length scaling. - Ladderize branches or collapse clades below a support threshold (bootstrap percentages or posterior probabilities). - Search taxa, select nodes, focus on a clade, and reroot at an internal branch; support values stay with their branches. - Color terminal nodes from imported or manually entered trait rows. TRAITS AND AUDIT - Import quoted trait CSV data and edit taxon, group, value, color, and notes. - Check terminal labels, duplicate taxa, branch-length completeness, trait coverage, and interpretation-note readiness. - Keep method sources and the limits of the app's analysis visible beside the audit. REVIEWABLE EXPORTS - Share normalized Newick and NEXUS tree files. - Export trait metadata as CSV and the rendered tree as scalable SVG. - Create a multi-page PDF report with the tree, audit, taxa and traits, statistics and group checks, or share a complete packet containing every format. EVERYTHING INCLUDED One purchase, no subscription. Cladewright works offline. It contains no account system, subscription, advertising, tracking, third-party analytics SDK, external purchase, or developer-operated network service. Projects remain in the app's private container unless you explicitly choose a file through Apple's document picker or select a destination in the iOS share sheet. Cladewright inspects supplied topology and metadata. Inference method, alignment quality, model choice, rooting assumptions, and biological conclusions remain the responsibility of the user and source study.