# OHIO811 vs Trimble Unity

OHIO811 and Trimble Unity both sit at 3.5 stars, but that hides the real split: 60% of OHIO811's written reviews are positive against 0% of Trimble Unity's. OHIO811 also leads on iOS requirement (11.0 vs 15.0). Trimble Unity's advantage is ads (none vs shown) and update cadence (monthly vs every 9 months). On price, rating, ratings volume and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 3.5 for OHIO811 against 3.5 for Trimble Unity. Both are backed by a comparable volume of ratings — 10 and 8 respectively. Written reviews are what separate them: 60% of OHIO811's written reviews are positive against 0% of Trimble Unity's.

OHIO811 ships an update every 9 months, Trimble Unity monthly. The most recent releases landed on October 4, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | OHIO811 | Trimble Unity |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (10 ratings)](https://appshunter.io/ios/app/ohio811/id713526907/reviews) | [3.5 (8 ratings)](https://appshunter.io/ios/app/trimble-unity/id1314870413/reviews) |
| Number of ratings | **10** | 8 |
| Positive reviews | **60.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 9 months | **Monthly** |
| Monetization | Ad-supported | **Free** |
| Size | 30 MB | 384 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) | [Trimble Inc.](https://appshunter.io/developer/322561665) |

## 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


### Trimble Unity

[App page](https://appshunter.io/ios/app/trimble-unity/id1314870413)

This cloud-based suite helps water utilities manage assets and networks. It offers advanced workflows for mapping, performance assessment, and cost reduction, while ensuring public health and safety. The software integrates GIS and GNSS technologies for accurate data collection and reporting.

**Highlights:** Cloud-based collaboration suite, GIS-centric asset management, Mobile data collection, Offline operation, Intelligent data forms, GPS positioning and photo capture

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is OHIO811 free?

OHIO811 is free to download, with no in-app purchases.

### Is Trimble Unity free?

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

### Which has better reviews, OHIO811 or Trimble Unity?

OHIO811 and Trimble Unity are both rated 3.5 out of 5 on the App Store, from 10 and 8 ratings respectively.

### Do OHIO811 or Trimble Unity have ads?

OHIO811 shows ads; Trimble Unity does not.

### Which is updated more often, OHIO811 or Trimble Unity?

OHIO811 ships an update every 9 months, and Trimble Unity monthly. Most recently, OHIO811 was updated on October 4, 2026 and Trimble Unity 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.*