# OHIO811 vs ZIG Inspector

The clearest difference is ads: ZIG Inspector at none against OHIO811's shown. ZIG Inspector also leads on update cadence (every 3 days vs every 9 months). OHIO811's advantage is iOS requirement (11.0 vs 15.0). On price, 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.

OHIO811 ships an update every 9 months, ZIG Inspector every 3 days. The most recent releases landed on June 4, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | OHIO811 | ZIG Inspector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (10 ratings)](https://appshunter.io/ios/app/ohio811/id713526907/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 9 months | **Every 3 days** |
| Monetization | Ad-supported | — |
| Size | 30 MB | 4 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ohio Utilities Protection Service](https://appshunter.io/developer/713526910) | [Zed Digital](https://appshunter.io/developer/1332742918) |

## What reviewers say

### OHIO811

[App page](https://appshunter.io/ios/app/ohio811/id713526907)

This app serves as a communication link for individuals planning to dig, relaying requests to utility companies. It provides information on safe digging practices, upcoming events, and legal requirements. Users can check line markings and submit excavation requests.

**Highlights:** Relay digging requests to utilities, Safe digging information, Upcoming events calendar, Legal and legislative updates, Positive Response for line markings, Submit single address locates (e-dig), View nearby excavations (Near ticket)

**Features:** macOS Compatibility

**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 OHIO811 free?

OHIO811 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 OHIO811 or ZIG Inspector have ads?

OHIO811 shows ads; ZIG Inspector does not.

### Which is updated more often, OHIO811 or ZIG Inspector?

OHIO811 ships an update every 9 months, and ZIG Inspector every 3 days. Most recently, OHIO811 was updated on June 4, 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.*