Orifice Flow Rate Calculator vs LWF Observer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Orifice Flow Rate Calculator
Easily calculate natural gas orifice flow rates using the AGA 3 standard. This utility app allows users to determine MCF production for a given duration, save calculations, and export data to CSV. It functions offline, requiring no cell service.
- Orifice MCF Calculator
- Rotary (Direct) MCF Calculator
- Save all calculations
- View saved inputs and calculations
- Export calculations to CSV
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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
LWF Observer
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· With our advanced sensing unit, you can easily and efficiently control and manage your water system, detecting events such as leakages, unauthorized drilling, water theft etc. · Receive real-time alerts directly on your mobile device with pinpoint accuracy, detecting even the smallest leaks within a few meters. · A smart sensing one-of-a-kind system for detecting and monitoring water loss which is better for the environment. · Mobile application that allows you to manage your water infrastructure and deploy sensors on your water network. · 24/7 continuous detection and predictive analytics, providing you with real-time automatic alerts powered by AI and deep learning. This system is capable of identifying anomalous behavior and detecting potential damage to your pipeline, such as leakages, unauthorized connections (theft), and drilling near the infrastructure. · With our advanced sensing unit, you can easily and efficiently control and manage your water system, detecting events such as leakages, unauthorized drilling, water theft etc.
Screenshots
Verdict
The clearest difference is update cadence: LWF Observer at weekly against Orifice Flow Rate Calculator's every 6 months. LWF Observer also leads on iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Orifice Flow Rate Calculator ships an update every 6 months, LWF Observer weekly. The most recent releases landed on October 24, 2026 and October 17, 2026 respectively.
| Parameter | Orifice Flow Rate Calculator | LWF Observer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (113 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 113 — better | — |
| Update frequency | Every 6 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | R.L. Laughlin & Company, Inc. | LWF TECHNOLOGIES LTD |
In-app purchases
Orifice Flow Rate Calculator
No in-app purchases
LWF Observer
No in-app purchases
Questions
Is Orifice Flow Rate Calculator free?
Is LWF Observer free?
Do Orifice Flow Rate Calculator or LWF Observer have ads?
Which is updated more often, Orifice Flow Rate Calculator or LWF Observer?
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