# Solid Engineer vs ISD Studio 3D

The clearest difference is rating: Solid Engineer at 5.0 against ISD Studio 3D's 2.5. Solid Engineer also leads on in-app purchases (none vs 1). ISD Studio 3D's advantage is update cadence (every 2 months vs every 5 months) and iOS requirement (12.2 vs 15.6). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. ISD Studio 3D sells 1 one-off in-app purchase. Solid Engineer asks for nothing beyond the download.

Solid Engineer holds the better App Store score, 5.0 against 2.5. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Solid Engineer ships an update every 5 months, ISD Studio 3D every 2 months. The most recent releases landed on June 11, 2026 and August 5, 2026 respectively.

## The numbers

| Metric | Solid Engineer | ISD Studio 3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/solid-engineer/id6450507988/reviews)** | [2.5 (2 ratings)](https://appshunter.io/ios/app/isd-studio-3d/id6504453776/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 16 MB | 62 MB |
| Requires iOS | 15.6 | **12.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Axxem B.V.](https://appshunter.io/developer/1515691144) | [Lilysoft LLC](https://appshunter.io/developer/1752353880) |

## What reviewers say

### Solid Engineer

[App page](https://appshunter.io/ios/app/solid-engineer/id6450507988)

This app teaches programming through visual 3D model creation. It offers modes for beginners to advanced users, including JavaScript support. Models can be printed or shared.

**Highlights:** Visual programming interface, 3D model creation, Printable model export, Beginner to advanced modes, JavaScript integration, Keyframe animation

**Features:** macOS Compatibility

**In-app purchases:** none


### ISD Studio 3D

[App page](https://appshunter.io/ios/app/isd-studio-3d/id6504453776)

Design and animate 3D characters with this tool. Create custom models by manipulating surfaces, then rig them with skeletons to add motion and export as glTF animations or VRM avatars.

**Highlights:** Create 3D character models, Deform and combine surfaces, Rig models with skeletons, Add motion for animation, Export glTF animations, Export VRM avatars

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version | $2.99 | one-time |


## Frequently asked questions

### Is Solid Engineer free?

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

### Is ISD Studio 3D free?

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

### Which has better reviews, Solid Engineer or ISD Studio 3D?

Solid Engineer is rated higher. Solid Engineer averages 5.0 out of 5 from 1 ratings, while ISD Studio 3D averages 2.5 from 2 ratings.

### Do Solid Engineer or ISD Studio 3D have ads?

Neither Solid Engineer nor ISD Studio 3D shows ads.

### Which is updated more often, Solid Engineer or ISD Studio 3D?

Solid Engineer ships an update every 5 months, and ISD Studio 3D every 2 months. Most recently, Solid Engineer was updated on June 11, 2026 and ISD Studio 3D on August 5, 2026.

---

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