# Orifice Flow Rate Calculator — Natural Gas

> Offline utility for calculating natural gas orifice flow rates using AGA 3 standard. (iPhone/iPad app by R.L. Laughlin & Company, Inc..)

- Source: https://appshunter.io/ios/app/orifice-flow-rate-calculator/id1439701941 (this page in markdown: same URL + `.md`)
- Developer: [R.L. Laughlin & Company, Inc.](https://appshunter.io/developer/1438670681)
- Category: Utilities, Business
- Price: Free
- Rating: 4.90/5 from 98 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 2 MB
- Languages: English
- Released: 2018-12-20
- Data updated: 2026-08-15
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/orifice-flow-rate-calculator/id1439701941/reviews.md

## What is Orifice Flow Rate Calculator?

Looking to calculate orifice flow rates quickly and easily?  R. L. Laughlin has a solution for you! With our Orifice Flow Rate Calculator, users are given the ability to determine orifice flow rates easily and quickly that does not require cell service to utilize the app.

Orifice Flow Rate Calculator utilizes AGA 3 standard to calculate the MCF a single well is producing per day and for a given duration that you choose. 

Features:
       -Orifice MCF Calculator
       -Rotary (Direct) MCF Calculator
       -Ability to save all calculations
       -View all inputs and calculations saved for a given meter
       -Export all or individual saved calculations to a CSV file

## Key features

- Orifice MCF Calculator
- Rotary (Direct) MCF Calculator
- Save all calculations
- View saved inputs and calculations
- Export calculations to CSV

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/orifice-flow-rate-calculator/id1439701941/reviews.md

### 5/5 — Unit

*2023-02-09*

Wes options for the volume unit

### 5/5 — Great app for oil field worker

*2019-04-05, version 1.2*

Thanks I love this app

### 5/5 — Excellent

*2019-01-11, version 1.0*

Makes calculating flow rate simple and accurate!!!

## Frequently asked questions about Orifice Flow Rate Calculator

### What is the Orifice Flow Rate Calculator used for?

The Orifice Flow Rate Calculator is used to determine natural gas orifice flow rates quickly and easily. It utilizes the AGA 3 standard to calculate the MCF a single well is producing per day for a chosen duration.

### Does the Orifice Flow Rate Calculator require an internet connection?

No, the Orifice Flow Rate Calculator does not require cell service to utilize the app. It is designed to function offline, making it convenient for use in remote locations.

### What calculation standards does the Orifice Flow Rate Calculator follow?

The Orifice Flow Rate Calculator utilizes the AGA 3 standard for its calculations. This is a widely recognized standard in the natural gas industry for determining flow rates.

### Can I save my calculations with the Orifice Flow Rate Calculator?

Yes, the Orifice Flow Rate Calculator allows users to save all their calculations. You can view all inputs and calculations saved for a given meter.

### Can I export my data from the Orifice Flow Rate Calculator?

Yes, you can export all or individual saved calculations to a CSV file. This feature allows for easy data transfer and further analysis.

### What devices is the Orifice Flow Rate Calculator available on?

The Orifice Flow Rate Calculator is available on iPhone, iPad, and iPod. It is designed for iOS devices.

### How often is the Orifice Flow Rate Calculator updated?

The latest version of the Orifice Flow Rate Calculator is 1.9, last updated on September 3, 2025. The app was originally released on December 20, 2018.

### What is the user rating for the Orifice Flow Rate Calculator?

The Orifice Flow Rate Calculator has an excellent rating of 4.9 stars from 98 ratings. This indicates a high level of user satisfaction.

## Version history (last 5 releases)

### 1.9 — 2025-09-03

-Removed beta range error pop-up. Provides the user with text and continues the calculation.

### 1.8 — 2022-04-13

Added the ability to calculate by using either entering hours or days for chart duration. 
To switch between hours or days, you can find this option under the Settings Tab.

### 1.7 — 2022-03-18

Smashed some bugs and made calculation improvements.

### 1.6 — 2022-03-09

-MCF calculations now show 2 decimal places
-If calculating MCF by hour, daily MCF is not calculated.

### 1.5 — 2021-05-27

Added settings tab which provides the ability to store personalized meter characteristics for atmospheric pressure, barometric pressure, gravity, flowing temperature, and base temperature. These values will be used in the calculation method and will be displayed automatically in input fields for orifice and direct calculator.

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## More apps by R.L. Laughlin & Company, Inc.

- [RLLCO Field Services](https://appshunter.io/ios/app/rllco-field-services/id1522686949)
- [Ert Replace](https://appshunter.io/ios/app/ert-replace/id6744559355)

All apps by R.L. Laughlin & Company, Inc.: https://appshunter.io/developer/1438670681

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-15.*