Harth vs Renderica

Harth is a browser-based workspace for architecture practices to design, research, collaborate on, and present projects, with AI agents working on building data. It imports Revit, Archicad, SketchUp, and IFC models while preserving elements and coordinates. About 40 discipline-specific agent skills address areas such as structure, envelope, interiors, and analysis. For site context, it offers 3D satellite terrain, nearby-building imports, boundary tracing, geolocation, and sun studies. Users can render a model view, apply masking and lighting presets, and upscale images for print. Teams can work together using live cursors, presence, threaded comments pinned over 3D, and project voice. Harth also converts 360-camera footage into an explorable, measurable 3D scan, with processing stated at one to two days. Exports include PDF, image, and 3D files, 360-degree views, and recorded walkthroughs. All plans include the full workspace and differ by AI usage; monthly credits can be topped up with packs. Free includes 700 credits per month; Plus is $59 per month for 5,000 credits, and Pro is $149 per month for 15,000.

Renderica uses AI to turn architectural sketches and plans into photorealistic renders. It extracts room dimensions and openings from a plan and conditions rendering on that geometry. Inputs include PDF, DXF, PNG, JPG, GLB, and GLTF files, as well as hand-drawn sketches, floor plans, CAD sketches, and Pinterest image URLs. The homepage lists compatibility with Revit, SketchUp, ArchiCAD, Rhino 3D, AutoCAD, Blender, 3ds Max, and Chief Architect. Users can select from 32 style presets and five lighting modes, provide Pinterest pins or image URLs as style references, and share a client review link or export a 4K PNG from the gallery. The Free plan costs nothing and includes three renders per month at 1024px; Starter costs $24 a month for 60 monthly renders at 2048px. Pro costs $59 a month and Studio costs $179 a month. Renderica says uploaded content is not used to train its own models. Its policy describes some stored assets as accessible through non-expiring unauthenticated URLs and is marked draft pending legal review. For non-rectangular rooms, openings may not be carved and angled walls may be omitted.