# EM HazLoc vs Affinity+ Field Utility

The clearest difference is rating: EM HazLoc at 4.0 against Affinity+ Field Utility's 3.5. EM HazLoc also leads on iOS requirement (16.0 vs 18.0). Affinity+ Field Utility's advantage is update cadence (every 6 weeks vs every 25 months). On price, ratings volume, ads 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.

EM HazLoc holds the better App Store score, 4.0 against 3.5. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

EM HazLoc ships an update every 25 months, Affinity+ Field Utility every 6 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | EM HazLoc | Affinity+ Field Utility |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/em-hazloc/id1459518357/reviews)** | [3.5 (2 ratings)](https://appshunter.io/ios/app/affinity-plus-field-utility/id1613603019/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 17 MB | 84 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Exxon Mobil Corporation](https://appshunter.io/developer/528788995) | [R.S.T. Instruments Ltd](https://appshunter.io/developer/1613603021) |

## What reviewers say

### EM HazLoc

[App page](https://appshunter.io/ios/app/em-hazloc/id1459518357)

This app helps identify iOS device models approved for use in specific hazardous classified areas for ExxonMobil's operational needs. It displays device model, approval status, approved hazardous locations, and required accessories for field use.

**Highlights:** Device model identification, Approval status display, Approved hazardous locations, Required case information, Approved peripheral listing, Device evaluation details

**Features:** Vision Pro support

**In-app purchases:** none


### Affinity+ Field Utility

[App page](https://appshunter.io/ios/app/affinity-plus-field-utility/id1613603019)

This application simplifies the setup of data communication networks for the geotechnical industry. It automates sensor configuration by scanning digital tags, saving significant installation time and effort in the field. The app provides a user-friendly interface for managing and monitoring instrumentation networks.

**Highlights:** Automated sensor configuration, Bluetooth data logger integration, Digital tag scanning for instruments, Site-based network management, Remote monitoring with alerts and alarms, Data visualization and reporting

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is EM HazLoc free?

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

### Is Affinity+ Field Utility free?

Affinity+ Field Utility is free to download, with no in-app purchases.

### Which has better reviews, EM HazLoc or Affinity+ Field Utility?

EM HazLoc is rated higher. EM HazLoc averages 4.0 out of 5 from 2 ratings, while Affinity+ Field Utility averages 3.5 from 2 ratings.

### Do EM HazLoc or Affinity+ Field Utility have ads?

Neither EM HazLoc nor Affinity+ Field Utility shows ads.

### Which is updated more often, EM HazLoc or Affinity+ Field Utility?

EM HazLoc ships an update every 25 months, and Affinity+ Field Utility every 6 weeks. Most recently, EM HazLoc was updated on November 3, 2026 and Affinity+ Field Utility on November 3, 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.*