# DocuRail vs ZIG Inspector

The clearest difference is update cadence: ZIG Inspector at every 3 days against DocuRail's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

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

DocuRail ships an update every 2 months, ZIG Inspector every 3 days. The most recent releases landed on September 9, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | DocuRail | ZIG Inspector |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Size | 46 MB | 4 MB |
| Requires iOS | 16.1 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Switch Rail](https://appshunter.io/developer/1591916244) | [Zed Digital](https://appshunter.io/developer/1332742918) |

## What reviewers say

### DocuRail

[App page](https://appshunter.io/ios/app/docurail/id1591916242)

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

**In-app purchases:** none


### ZIG Inspector

[App page](https://appshunter.io/ios/app/zig-inspector/id6754589521)

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

**In-app purchases:** none


## Frequently asked questions

### Is DocuRail free?

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

### Is ZIG Inspector free?

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

### Do DocuRail or ZIG Inspector have ads?

Neither DocuRail nor ZIG Inspector shows ads.

### Which is updated more often, DocuRail or ZIG Inspector?

DocuRail ships an update every 2 months, and ZIG Inspector every 3 days. Most recently, DocuRail was updated on September 9, 2026 and ZIG Inspector on September 20, 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.*