Engineering Converter Best vs Cadrio3D
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Engineering Converter Best
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Transform various physical quantities - weight, distances, volumes, speed, temperature, area, density, moment and pressure - easily and quickly. A convenient tool for engineers and technical specialists.
Cadrio3D
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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
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Verdict
The clearest difference is in-app purchases: Engineering Converter Best at none against Cadrio3D's 3. Engineering Converter Best also leads on iOS requirement (12.0 vs 26.2). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Cadrio3D sells 3 in-app purchases, starting at $2.99 per month. Engineering Converter Best asks for nothing beyond the download.
| Parameter | Engineering Converter Best | Cadrio3D |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 9 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 26.2 |
| Further details — not scored | ||
| Size | 13 MB | 58 MB |
| Age rating | 4+ | 4+ |
| Developer | Dmitry Voynov | ryo sasaki |
In-app purchases
Engineering Converter Best
No in-app purchases
Cadrio3D
- Cadrio3D月額$2.991 Month
- Cadrio3D年額$24.991 Year
- Cadrio Pro 買い切り$49.99






