# Smart Construction Tools vs CAD Drawing Designer 3D

The clearest difference is ads: Smart Construction Tools at none against CAD Drawing Designer 3D's shown. Smart Construction Tools also leads on update cadence (every 2 weeks vs every 16 months) and review sentiment (73% vs 46%). CAD Drawing Designer 3D's advantage is device support (4 vs 1) and iOS requirement (12.0 vs 18.6). On price, in-app purchases and monetization model there is nothing between them.

Both are free to download. Smart Construction Tools sells 3 in-app purchases, starting at $2.99 per month and CAD Drawing Designer 3D sells 3 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

Smart Construction Tools ships an update every 2 weeks, CAD Drawing Designer 3D every 16 months. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Smart Construction Tools | CAD Drawing Designer 3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (44 ratings)](https://appshunter.io/ios/app/cad-drawing-designer-3d/id6450542473/reviews)** |
| Number of ratings | — | **44** |
| Positive reviews | **72.5% of reviews** | 45.8% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 16 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 90 MB | 207 MB |
| Requires iOS | 18.6 | **12.0** |
| Devices | iPhone | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Dmitrii Gorbachev](https://appshunter.io/developer/1565707272) | [Sebastian Kemper](https://appshunter.io/developer/1513694925) |

## What reviewers say

### Smart Construction Tools

[App page](https://appshunter.io/ios/app/smart-construction-tools/id1565936353)

This construction calculator app helps builders estimate materials and volumes for various projects, including foundations, walls, roofs, and earthworks. It features a unit converter and detailed calculations for concrete, rebar, lumber, and more, aiding in material purchasing and project planning.

**Highlights:** Foundation calculations (slab, strip, circular, etc.), Wall material estimation (brick, block, insulation), Roofing material calculations, Lumber and timber calculations, Metal structure calculations, Earthwork volume estimation, Unit conversion tool

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Six months | $17.99 | per 6 months |
| Yearly | $29.99 | per year |


### CAD Drawing Designer 3D

[App page](https://appshunter.io/ios/app/cad-drawing-designer-3d/id6450542473)

Design and plan your projects in 3D with a comprehensive library of construction components and intuitive CAD tools. Easily create, edit, and dimension drawings, import various 3D data formats, and generate realistic visualizations. Export material lists for efficient implementation.

**Highlights:** 3D construction and 2D views, Component library (wood, steel, concrete), Drag & drop 3D object insertion, Material customization, Import 3D CAD data (FBX, OBJ, GLTF2, STL, PLY, 3MF, DAE), Photo function for high-resolution images, Parts list export

**Features:** Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version (Month) | $8.99 | per month |
| Pro Version (Year) | $29.99 | per year |
| Pro Version (One Year) | $29.99 | per year |


## Frequently asked questions

### Is Smart Construction Tools free?

Smart Construction Tools is free to download, with in-app purchases available.

### Is CAD Drawing Designer 3D free?

CAD Drawing Designer 3D is free to download, with in-app purchases available.

### Do Smart Construction Tools or CAD Drawing Designer 3D have ads?

CAD Drawing Designer 3D shows ads; Smart Construction Tools does not.

### Which is updated more often, Smart Construction Tools or CAD Drawing Designer 3D?

Smart Construction Tools ships an update every 2 weeks, and CAD Drawing Designer 3D every 16 months. Most recently, Smart Construction Tools was updated on October 30, 2026 and CAD Drawing Designer 3D on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*