# TDRoom vs CAD Smart Modeling

The clearest difference is rating: TDRoom at 5.0 against CAD Smart Modeling's 3.5. TDRoom also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 5 months). CAD Smart Modeling's advantage is ratings volume (10 vs 1) and device support (4 vs 1). On price, in-app purchases and monetization model there is nothing between them.

Both are free to download. TDRoom sells 1 in-app purchase, starting at $7.99 per month and CAD Smart Modeling sells 7 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

TDRoom holds the better App Store score, 5.0 against 3.5. That said, the two scores are not equally well evidenced: CAD Smart Modeling has 10 ratings behind it against 1, so its average is the more settled of the two.

TDRoom ships an update every 3 weeks, CAD Smart Modeling every 5 months. Both last shipped on November 4, 2026.

## The numbers

| Metric | TDRoom | CAD Smart Modeling |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tdroom/id6473169525/reviews)** | [3.5 (10 ratings)](https://appshunter.io/ios/app/cad-smart-modeling-3d-cad/id6476608505/reviews) |
| Number of ratings | 1 | **10** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 5 months |
| Monetization | Freemium | Free with in-app purchases |
| Size | 2 MB | 440 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod, Mac** |
| Age rating | 17+ | 4+ |
| Developer | [Duong Nguyen Dinh Tung](https://appshunter.io/developer/1705338567) | [Sebastian Kemper](https://appshunter.io/developer/1513694925) |

## What reviewers say

### TDRoom

[App page](https://appshunter.io/ios/app/tdroom/id6473169525)

This app allows you to measure and create 3D models directly on your phone. You can then transfer these models to SketchUp software for further refinement and design.

**Highlights:** Measure and create 3D models on phone, Transfer models to SketchUp, Mobile design tool, 3D modeling capabilities

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nâng cấp | $7.99 | per month |


### CAD Smart Modeling

[App page](https://appshunter.io/ios/app/cad-smart-modeling-3d-cad/id6476608505)

Create detailed 3D models, technical drawings, and digital prototypes on your mobile device. This versatile CAD app is suitable for architecture, product design, engineering, and 3D printing, offering intuitive tools for both beginners and professionals.

**Highlights:** 3D Modeling & CAD Design, Technical Drawing, Precise Geometric Constructions, Import & Export of CAD and 3D Files, Product Design & Prototyping, 3D Models for Architecture & 3D Printing

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium access | $3.99 | per month |
| Premium access | $8.99 | per month |
| Premium access | $22.99 | per year |
| Premium access | $44.99 | per year |
| Pro Version | $44.99 | per year |
| Premium Access | $44.99 | one-time |
| Premium Access | $89.99 | one-time |


## Frequently asked questions

### Is TDRoom free?

TDRoom is free to download, with in-app purchases available.

### Is CAD Smart Modeling free?

CAD Smart Modeling is free to download, with in-app purchases available.

### Which has better reviews, TDRoom or CAD Smart Modeling?

TDRoom is rated higher. TDRoom averages 5.0 out of 5 from 1 ratings, while CAD Smart Modeling averages 3.5 from 10 ratings.

### Do TDRoom or CAD Smart Modeling have ads?

CAD Smart Modeling shows ads; TDRoom does not.

### Which is updated more often, TDRoom or CAD Smart Modeling?

TDRoom ships an update every 3 weeks, and CAD Smart Modeling every 5 months. Most recently, TDRoom was updated on November 4, 2026 and CAD Smart Modeling on November 4, 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.*