# EngineerCalc vs Claydo Studio

The clearest difference is price: Claydo Studio at Free against EngineerCalc's $1.99. Claydo Studio also leads on update cadence (every 5 months vs every 60 months). EngineerCalc's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

Claydo Studio is free to download; EngineerCalc costs $1.99 up front. Claydo Studio sells 1 one-off in-app purchase. EngineerCalc asks for nothing beyond the download.

EngineerCalc ships an update every 60 months, Claydo Studio every 5 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | EngineerCalc | Claydo Studio |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[2.9 (10 ratings)](https://appshunter.io/ios/app/claydo-studio/id1639386789/reviews)** |
| Number of ratings | — | **10** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 60 months | **Every 5 months** |
| Monetization | — | Free with in-app purchases |
| Size | 10 MB | 201 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [oskari saarinen](https://appshunter.io/developer/1234576917) | [Arjun Gupte](https://appshunter.io/developer/620272974) |

## What reviewers say

### EngineerCalc

[App page](https://appshunter.io/ios/app/engineercalc/id1454820389)

**Features:** macOS Compatibility

**In-app purchases:** none


### Claydo Studio

[App page](https://appshunter.io/ios/app/claydo-studio/id1639386789)

Create 3D models using simple shapes and intuitive gestures. Visualize designs in augmented reality and export them for 3D printing or professional software. Ideal for designers, hobbyists, teachers, and kids.

**Highlights:** Simple 3D modeling with basic shapes, Augmented Reality visualization, Export to STL and OBJ formats, Millimeter precision for 3D printing, In-built video tutorials, COPPA and GDPR compliant

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Pro Version | $19.99 | one-time |


## Frequently asked questions

### Is EngineerCalc free?

EngineerCalc costs $1.99, with no in-app purchases.

### Is Claydo Studio free?

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

### Do EngineerCalc or Claydo Studio have ads?

Neither EngineerCalc nor Claydo Studio shows ads.

### Which is updated more often, EngineerCalc or Claydo Studio?

EngineerCalc ships an update every 60 months, and Claydo Studio every 5 months. Most recently, EngineerCalc was updated on October 26, 2026 and Claydo Studio on October 24, 2026.

---

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