New in 4.2 • Bricks: build any model from standard building bricks or plates, with slopes and corner pieces, a parts list, colour by part type, a layer-by-layer build animation and a build-instructions PDF. • ASET light-return maps for cut gems, with stacked slices and PDF export. • Liquid metal view (animated), plus Plastic, Metal and Wood material views. • Melt is now a live modifier; Hyphae and Branches can grow inside any layer. • Voronoi starts in 3D, plus many fixes and improvements. • TopMod stays free. Optional one-time donations help keep it that way.

TopMod 3D 4.1 • Subdivision: Loop, √3, Honeycomb and Dual now work on open surfaces, and √3 is much faster. • Push/pull arrow follows the face you just selected. • Full screen keeps Tools, Options and Layers exactly where they sit in the normal layout; Esc exits. • Cage Edit: morph any model with a movable lattice (2–8 points per axis, curve degree 1–3). • Menger, Sierpinski, Gyroid and Hybrid as live modifiers; Voronoi 2D/3D. • New generators: Branches, Pipes, Slime, Reaction, Cellular, Hyphae, Terrain, Origami, plus Coral growth. • Type exact values into every slider. • Topology optimisation opens with tuned defaults; Aero can bake its stream lines. • Spacebar opens the shortcut wheel.

TopMod 3D 4.0 • Rhino-style 1, 2 or 4 viewports — tap a viewport title to pick its view (Perspective, Top, Front, Right…), display style, edges, silhouette, bounding box and dimensions. Select faces in any viewport. • Extra Perspective viewports orbit freely, each with its own nav cube and Home, Spin, Focus and Full-screen buttons. • Push / pull arrow on selected faces (Shift-drag to extrude). • Smooth, NURBS-style fillets; Fillet and Chamfer now lead the Edit tools. • Silhouette outline, inches or mm with a 1-inch default cube, CAD-style dimensions and a separate bounding-box toggle. • Single or Duo layout, Light or Dark theme, and full screen with Tools / Options / Layers on demand. • Claude AI model builder in Help (bring your own Anthropic key). • New File ▸ Settings and a single Export dialog.

New in 3.9: • Duo layout for iPhone Duo: half-fold the phone and the 3D viewport moves to the top half while the toolbar, Layers and Modifiers stay on the bottom half • Bejewel: set gems on every face or vertex, with prongs, same-size option, and live modifier support • Cage: morph primitives, layers or diamond cuts into every cell of a host shape • Simulate: Physics (grab and throw), Magnet packing, Melt presets, Aero wind tunnel, FEA stress, Topology Optimization with step-by-step tutorial, Shrink-wrap and Granular Pour • AR: view your model in your room • Loop select toggle on the bottom bar • Hand controls visual guide and an in-app What's New (Help menu) • Gem Cut tool: round brilliant, princess, oval, cushion, pear, marquise, emerald, asscher, radiant, trillion and baguette cuts • Ray-traced gem views: Diamond, Red Diamond, Ruby, Sapphire, Emerald • Line Art view with SVG, HPGL and PNG export • Math · Live panel with an equation and Python prompt • Loops and Rind tools for TopMod-style sculptures • Step Guide: export every modeling step as a PDF • New demos, 360 MOV export and screen recording • New grey and white themes, tidier layers panel and better landscape layout

Hands-on modeling, refined. • New Demo mode: TopMod opens with a guided showcase that builds shapes, runs tools and orbits the result — tap Try for yourself (or anything) to take over. • Hand tracking: pinch to select faces, quick menus for Topology, Primitives and Modifiers (pinch, slide, release), touch-to-drag sliders, pinky undo/redo, camera pan and orbit gestures. • Live modifier stack: Subdivide, Twist, Pinch, Handle and more stay editable — select faces on the modified mesh, reorder, adjust, undo per drag. • New Render: live orange-glass look with glow, studio lighting and one-tap PNG export. • Wireframe rebuilt for uniform strut thickness on any shape. • Full-screen mode (Shift+F), wide zoom-to-fit (G), larger layer text. • Fabrication: slab/laser peel animation with Start over, 3D-print slicing with supports and raft. • Many fixes to selection, camera alignment and stability.

New modeling tools: expanded primitives, remeshing, and topology operations give you more ways to build and reshape your models. Plus performance and stability improvements throughout.

Performance and stability improvements across the app, with refinements to the modeling tools and a smoother, more responsive interface.

Hand-tracking gesture control: sculpt and navigate your models in mid-air using the camera and LiDAR, with depth refinement for precise control. Redesigned interface with a cleaner toolbar, dockable Layers and Options panels, and a refreshed app icon. Expanded modeling tools — primitives, remeshing, and topology operations (Catmull-Clark, wireframe, and more) are faster and easier to reach. Performance and stability improvements throughout.