Arkio vs TAD Designer

Arkio is a design collaboration tool for architects and other spatial designers. Its solid-modeling tools support boolean operations and parametric volumes, while meeting participants can view and edit the same scene together in real time. For design review, users can save views, add voice-transcribed notes, make AI renders, and collaborate on 2D frames. Plugins connect Arkio with Archicad, Navisworks, Revit, Rhino, and SketchUp for model and related-data import or export. The free Starter plan includes the modeling tools, one-on-one meetings, and OBJ, GLB, and image import and export. Pro allows up to six meeting participants and includes 500 AI credits per month; it costs $35/user/mo with annual billing or $45/user/mo with monthly billing. Enterprise supports up to 24 participants and includes 1,000 monthly AI credits per license. Each AI render uses one credit, and credits renew monthly. Arkio runs on Android, iOS, macOS, and Windows. A Pro license can be installed on two devices but used on only one at a time.

TAD Designer Lite is a space-based BIM tool for architectural design, intended to support work from early concepts through more detailed models. A design can begin with 2D shapes and gain 3D attributes later, while users query information such as areas and distances. Its built-in ARDELA language lets users make probes or add-ons for model analysis. TAD is not drafting software; designs can be exported to CAD and 3D software, including RenderMan-compatible renderers and POV-Ray. Listed supported formats include VRML 2, Virtualight, and RenderMan. The maker describes Lite as intended for small and medium architectural offices, especially in developing countries. Work is saved on the user's computer or LAN. The maker says binary files receive a DRM signature to help protect models from misuse or copying. Support includes Discord community help, in-app contextual help, and online documentation. TAD originated in an architect's office in India in 1989. Lite is free to use; the full version requires free teamTAD Discord membership, and demo mode is available.