Comparison

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.

Head to head
About

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.

Highlights
  • Orifice MCF Calculator
  • Rotary (Direct) MCF Calculator
  • Save all calculations
  • View saved inputs and calculations
  • Export calculations to CSV
Features
Read full description

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

About

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

Orifice Flow Rate Calculator4 screens
LWF Observer3 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
Orifice Flow Rate Calculator versus LWF Observer: the parameters behind the verdict, then further details
ParameterOrifice Flow Rate CalculatorLWF Observer
PriceFreeFree
Rating4.9 (113 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings113 — better—
Update frequencyEvery 6 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.613.0 — better
Further details — not scored
Size2 MB35 MB
Age rating4+4+
DeveloperR.L. Laughlin & Company, Inc.LWF TECHNOLOGIES LTD

In-app purchases

None

Orifice Flow Rate Calculator

No in-app purchases

None

LWF Observer

No in-app purchases

Questions

Is Orifice Flow Rate Calculator free?
Orifice Flow Rate Calculator is free to download, with no in-app purchases.
Is LWF Observer free?
LWF Observer is free to download, with no in-app purchases.
Do Orifice Flow Rate Calculator or LWF Observer have ads?
Neither Orifice Flow Rate Calculator nor LWF Observer shows ads.
Which is updated more often, Orifice Flow Rate Calculator or LWF Observer?
Orifice Flow Rate Calculator ships an update every 6 months, and LWF Observer weekly. Most recently, Orifice Flow Rate Calculator was updated on October 24, 2026 and LWF Observer on October 17, 2026.

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