# Field Operator vs Open Invoice

Field Operator and Open Invoice are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support 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.

## The numbers

| Metric | Field Operator | Open Invoice |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/field-operator-exp-edition/id1541708396/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free | — |
| Size | 159 MB | 40 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [P2 Energy Solutions](https://appshunter.io/developer/1056792970) | [Yeun Kae Ngow](https://appshunter.io/developer/1650239962) |

## What reviewers say

### Field Operator

[App page](https://appshunter.io/ios/app/field-operator-exp-edition/id1541708396)

Streamline field operations with this app, designed for monitoring daily readings, run tickets, well tests, and inspections. It integrates with route surveillance for live SCADA feeds and office collaboration on task prioritization and daily planning.

**Highlights:** Monitor daily readings, Enter run tickets, Record well tests, Conduct inspections, View live SCADA feeds, Collaborate with office, Plan daily journeys

**In-app purchases:** none


### Open Invoice

[App page](https://appshunter.io/ios/app/open-invoice/id6446753104)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Field Operator free?

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

### Is Open Invoice free?

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

### Do Field Operator or Open Invoice have ads?

Neither Field Operator nor Open Invoice shows ads.

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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.*