# SCI View vs wtwdx

SCI View and wtwdx are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 10 months. Both last shipped on September 21, 2026.

## The numbers

| Metric | SCI View | wtwdx |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | Every 10 months |
| Size | 124 MB | 10 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sapphire Services](https://appshunter.io/developer/1594019578) | [Wireless Tsukamoto CO., LTD.](https://appshunter.io/developer/1381299984) |

## What reviewers say

### SCI View

[App page](https://appshunter.io/ios/app/sci-view/id1668630347)

**Features:** macOS Compatibility

**In-app purchases:** none


### wtwdx

[App page](https://appshunter.io/ios/app/wtwdx/id6739429456)

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

**In-app purchases:** none


## Frequently asked questions

### Is SCI View free?

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

### Is wtwdx free?

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

### Do SCI View or wtwdx have ads?

Neither SCI View nor wtwdx shows ads.

### Which is updated more often, SCI View or wtwdx?

SCI View ships an update every 10 months, and wtwdx every 10 months. Most recently, SCI View was updated on September 21, 2026 and wtwdx on September 21, 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.*