# 3DXReaderDS 3Dビューア vs Unbend Flat Pattern Calculator

The clearest difference is in-app purchases: 3DXReaderDS 3Dビューア at none against Unbend Flat Pattern Calculator's 1. 3DXReaderDS 3Dビューア also leads on ads (none vs shown) and update cadence (every 4 days vs fortnightly). On price and iOS requirement there is nothing between them.

Both are free to download. Unbend Flat Pattern Calculator sells 1 one-off in-app purchase. 3DXReaderDS 3Dビューア asks for nothing beyond the download.

3DXReaderDS 3Dビューア ships an update every 4 days, Unbend Flat Pattern Calculator fortnightly. The most recent releases landed on September 30, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | 3DXReaderDS 3Dビューア | Unbend Flat Pattern Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Fortnightly |
| Size | 47 MB | 57 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [株式会社シーセット (C’set Co.,Ltd.)](https://appshunter.io/developer/1812575895) | [Omer Faruk BAGCI](https://appshunter.io/developer/1850264269) |

## What reviewers say

### 3DXReaderDS 3Dビューア

[App page](https://appshunter.io/ios/app/3dxreaderds-3d/id6745497725)

**Features:** macOS Compatibility

**In-app purchases:** none


### Unbend Flat Pattern Calculator

[App page](https://appshunter.io/ios/app/unbend-flat-pattern-calculator/id6797460542)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unbend Pro Unlock | $14.99 | one-time |


## Frequently asked questions

### Is 3DXReaderDS 3Dビューア free?

3DXReaderDS 3Dビューア is free to download, with no in-app purchases.

### Is Unbend Flat Pattern Calculator free?

Unbend Flat Pattern Calculator is free to download, with in-app purchases available.

### Do 3DXReaderDS 3Dビューア or Unbend Flat Pattern Calculator have ads?

Unbend Flat Pattern Calculator shows ads; 3DXReaderDS 3Dビューア does not.

### Which is updated more often, 3DXReaderDS 3Dビューア or Unbend Flat Pattern Calculator?

3DXReaderDS 3Dビューア ships an update every 4 days, and Unbend Flat Pattern Calculator fortnightly. Most recently, 3DXReaderDS 3Dビューア was updated on September 30, 2026 and Unbend Flat Pattern Calculator on October 2, 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.*