# 3D Scratchpad vs TopMod

The clearest difference is rating: TopMod at 5.0 against 3D Scratchpad's 2.7. TopMod also leads on in-app purchases (none vs 3) and update cadence (weekly vs every 15 months). 3D Scratchpad's advantage is ratings volume (12 vs 3). On price, ads, device support and iOS requirement there is nothing between them.

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

TopMod holds the better App Store score, 5.0 against 2.7. Both are backed by a comparable volume of ratings — 12 and 3 respectively.

3D Scratchpad ships an update every 15 months, TopMod weekly. The most recent releases landed on October 13, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 3D Scratchpad | TopMod |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (12 ratings)](https://appshunter.io/ios/app/3d-scratchpad/id957422439/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/topmod-3d-mesh-modeler/id6779650858/reviews)** |
| Number of ratings | **12** | 3 |
| Positive reviews | 18.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 15 months | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 7 MB | 3 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Engineered Stuff](https://appshunter.io/developer/383720996) | [John Briscella](https://appshunter.io/developer/1889049396) |

## What reviewers say

### 3D Scratchpad

[App page](https://appshunter.io/ios/app/3d-scratchpad/id957422439)

Create 3D models with a user-friendly design tool. Freehand draw in 3D using primitive shapes and gestures. Manipulate objects with augmented reality and share your creations as .usdz files.

**Highlights:** Freehand 3D drawing, Primitive solid shapes, Intuitive gestures, Augmented reality manipulation, Share as .usdz files

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Month Subscription | $1.99 | per month |
| Six Month Subscription | $6.99 | per 6 months |
| One Year Subscription | $9.99 | per year |


### TopMod

[App page](https://appshunter.io/ios/app/topmod-3d-mesh-modeler/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


## Frequently asked questions

### Is 3D Scratchpad free?

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

### Is TopMod free?

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

### Which has better reviews, 3D Scratchpad or TopMod?

TopMod is rated higher. 3D Scratchpad averages 2.7 out of 5 from 12 ratings, while TopMod averages 5.0 from 3 ratings.

### Do 3D Scratchpad or TopMod have ads?

Neither 3D Scratchpad nor TopMod shows ads.

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

3D Scratchpad ships an update every 15 months, and TopMod weekly. Most recently, 3D Scratchpad was updated on October 13, 2026 and TopMod on October 8, 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.*