Cadrio3D
3D CAD, Sheet Metal & Drafting
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Real 3D CAD on iPad.iPhone Sketch, extrude, revolve and fillet, bend sheet metal and unfold flat patterns, then create drawings. STEP, STL, DXF and JWW, LiDAR scan AR.
Cadrio3D is a full 3D CAD app for iPad and iPhone. Sketch, build solids, bend sheet metal, unfold flat patterns and create drawings, all with your fingers and Apple Pencil, no PC required.
Built for on-site measuring, prototype parts, 3D printing, and sheet metal and duct flat patterns.
■ 3D MODELING
• 2D sketches with dimensions and constraints (lines, circles, arcs, splines)
• Extrude, revolve, sweep and loft
• Boolean union, cut and intersect
• Fillet, chamfer, shell and draft
• Threads, hole wizard, helix and primitive shapes
• Turn 3D sketch wireframes into solids
• Pattern, mirror and align
■ SHEET METAL
• Base flange from a sketched polyline
• Flange and hem, partial flange, bend relief
• Corner treatment (miter, butt, overlap)
• Flat pattern with K-factor bend allowance and bend lines
• Unfold pipes, cones and square-to-round ducts, with a selectable seam
■ DRAWINGS
• Third-angle projection views from your 3D model
• Dimensions and leaders
• Export to PDF and DXF
■ CHECK & ANALYZE
• Mass properties (volume, weight, center of mass)
• Bill of materials, interference check, section view, measurement
• Linkage motion playback with joints
■ CONNECT TO THE REAL WORLD
• Scan objects and rooms with LiDAR (with photo textures)
• Place models at real scale with AR
• Draw lines in the air with AR to create 3D sketches
■ FILES
• Import: STEP, STL, DXF, JWW
• Export: STEP, STL, DXF, 3MF, OBJ, PDF
• Place images (JPEG, PNG and more) as underlays
■ COMFORT
• Parallel and perspective projection
• Display units: mm, cm, m or inch
• Built-in MCP server so AI assistants can work with Cadrio3D
■ FREE VERSION & CADRIO PRO
Try every modeling feature for free (up to 1 saved drawing in the app).
Cadrio Pro removes the save limit and unlocks file export (STEP, DXF, STL and more), PDF/DXF drawing export and library saving.
Choose a monthly or yearly subscription, or a one-time lifetime purchase.
■ ABOUT SUBSCRIPTIONS
• Payment is charged to your Apple Account at confirmation of purchase.
• Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period.
• Your account is charged for renewal within 24 hours before the end of the current period.
• You can manage subscriptions and turn off auto-renew in your Apple Account settings after purchase.
Terms of Use (EULA): https://ohkumado.com/cadrio3d/terms-of-use.html
Privacy Policy: https://ohkumado.com/cadrio3d/privacy-policy.html
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Alignment now supports selecting the side of pipes and cylinders as the target.
After measuring in Measure mode, you can now reposition objects by editing the X, Y, and Z values.
Text can now be drawn with lines, and the font can be changed.
Multiple parts can now be selected and grouped together.
Files can now be sorted.
The developer, ryo sasaki, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- sasaki ryo
- Size
- 66 MB
- Category
- Business
- Compatibility
Requires iOS 26.2 or later.
- iPhone
Requires iOS 26.2 or later. - iPad
Requires iPadOS 26.2 or later. - Mac
Requires macOS 26.2 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.2 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Cadrio3D年額 $24.99
- Cadrio3D月額 $2.99
- Cadrio Pro 買い切り $49.99
- Copyright
- © 2026 大熊堂