# TopMod 3D vs Digit 3D CAD

The clearest difference is in-app purchases: TopMod 3D at none against Digit 3D CAD's 4. Digit 3D CAD's advantage is update cadence (every 2 days vs every 5 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Digit 3D CAD sells 4 in-app purchases, starting at $1.99 per month. TopMod 3D asks for nothing beyond the download.

TopMod 3D ships an update every 5 days, Digit 3D CAD every 2 days. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | TopMod 3D | Digit 3D CAD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/topmod-3d-design-software/id6779650858/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | — | 90.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 2 days** |
| Monetization | **Free** | Freemium |
| Size | 4 MB | 77 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [John Briscella](https://appshunter.io/developer/1889049396) | [运保 罗](https://appshunter.io/developer/6808351850) |

## What reviewers say

### TopMod 3D

[App page](https://appshunter.io/ios/app/topmod-3d-design-software/id6779650858)

Sculpt intricate 3D surfaces with topological modeling on your mobile device. Create complex geometry, including handles and holes, and export your designs as OBJ files for use in other 3D software. Ideal for artists and designers interested in the mathematics of form.

**Highlights:** Topological mesh modeling, Sculpt intricate 3D surfaces, Create handles and holes, Real-time geometry building, Export as OBJ files

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Digit 3D CAD

[App page](https://appshunter.io/ios/app/digit-3d-cad/id6808500363)

Create 3D models and designs on your mobile device. Offers free sketching and modeling tools, with an optional subscription for advanced features like export, rendering, and analysis.

**Highlights:** 3D sketching and modeling, Parametric history, STEP/STL/3MF export (Pro), Section views (Pro), Measurement and analysis (Pro), Rendering (Pro), Drawing export (Pro)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Digit 3D Pro (monthly) | $1.99 | per month |
| Digit 3D Max (monthly) | $2.99 | per month |
| Digit 3D Pro (yearly) | $9.99 | per year |
| Digit 3D Max (yearly) | $17.99 | per year |


## Frequently asked questions

### Is TopMod 3D free?

TopMod 3D is free to download, with no in-app purchases.

### Is Digit 3D CAD free?

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

### Do TopMod 3D or Digit 3D CAD have ads?

Neither TopMod 3D nor Digit 3D CAD shows ads.

### Which is updated more often, TopMod 3D or Digit 3D CAD?

TopMod 3D ships an update every 5 days, and Digit 3D CAD every 2 days. Most recently, TopMod 3D was updated on October 24, 2026 and Digit 3D CAD on October 26, 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.*