Mechanical

Kerf vs Shapr3D

Direct + history-based modeling on iPad/desktop — compared honestly against MIT open-core.

10/11in Kerf today

10/11in Shapr3D (included)

0behind a paid tier

2026-06-05last reviewed

Capability	Kerf	Shapr3D
Constraint sketcher (geometric + dimensional)D1	yes `packages/kerf-cad-core/src/kerf_cad_core/sketch.py`	yes source ↗
3D solid modeling (extrude/pocket/revolve/sweep/loft)D1	yes `packages/kerf-cad-core/src/kerf_cad_core/feature_loft.py`	yes source ↗
Fillet / chamfer (variable, continuity blends)D1	yes `packages/kerf-cad-core/src/kerf_cad_core/geom/fillet_solid.py`	yes source ↗
Direct modeling (move/offset face & edge)D1	yes `packages/kerf-cad-core/src/kerf_cad_core/direct_edit.py`	yes source ↗
History-based parametric (feature tree + design intent)D1	yes `packages/kerf-cad-core/src/kerf_cad_core/geom/history/persistent_naming.py`	yes source ↗
Variables + expressions (parametric dimensions)D1	yes `packages/kerf-cad-core/src/kerf_cad_core/sketch.py`	yes source ↗
Open-source core / chat-nativeD1	yes `packages/kerf-sdk/src/kerf/`	no source ↗
STEP / IGES neutral importD8	yes `packages/kerf-cad-core/src/kerf_cad_core/io/step_reader.py`	yes source ↗
STEP / STL / 3MF exportD8	yes `packages/kerf-cad-core/src/kerf_cad_core/io/step_writer.py`	yes source ↗
Parasolid (X_T) exportD8	no	yes source ↗
2D drawings from 3D modelD11	yes `packages/kerf-cad-core/src/kerf_cad_core/drawings/`	yes source ↗

yes shipped
partial works with limits
paid tier present, but behind an add-on or meter
no not available

Corrections welcome. These rows are read off published documentation on the date shown and go stale as products ship. If a row is wrong, open an issue — the source file is public/compare/shapr3d.md and every claim in it carries a link.