# tecuso ON vs Viewra 3D

The clearest difference is in-app purchases: tecuso ON at none against Viewra 3D's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Viewra 3D sells 3 in-app purchases, starting at $2.99 per month. tecuso ON asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 16, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | tecuso ON | Viewra 3D |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 193 MB | 112 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [tecuso GmbH](https://appshunter.io/developer/1462429113) | [Shenzhen Seize Times E-Commerce Co., Ltd.](https://appshunter.io/developer/368397197) |

## What reviewers say

### tecuso ON

[App page](https://appshunter.io/ios/app/tecuso-on/id1462429114)

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

**In-app purchases:** none


### Viewra 3D

[App page](https://appshunter.io/ios/app/viewra-3d/id6758283083)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Viewra 3D Pro (1 Month) | $2.99 | per month |
| Viewra 3D Pro (1 Year) | $29.99 | per year |
| Viewra 3D Pro (Lifetime) | $79.99 | one-time |


## Frequently asked questions

### Is tecuso ON free?

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

### Is Viewra 3D free?

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

### Do tecuso ON or Viewra 3D have ads?

Neither tecuso ON nor Viewra 3D shows ads.

### Which is updated more often, tecuso ON or Viewra 3D?

tecuso ON ships an update every 2 months, and Viewra 3D every 2 months. Most recently, tecuso ON was updated on September 16, 2026 and Viewra 3D on September 9, 2026.

---

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