Comparison

Viscosity Conversion vs Orifice Flow Rate Calculator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Viscosity Conversion

Features
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Viscosity Conversion - Easily convert between various types of units for Dynamic Viscosity, Kinematic Viscosity, and Dynamic Viscosity for Oil and Water. Viscosity is the state of being thick, sticky, and semi-fluid in consistency, primarily due to internal friction. It is quantified by a measure of the magnitude of internal friction, typically represented as the force per unit area resisting flow between parallel layers at a unit distance apart moving at unit speed relative to each other. Viscosity of a fluid indicates its resistance to gradual deformation under shear stress or tensile stress. In everyday terms, it's akin to the concept of "thickness." For instance, honey exhibits significantly higher viscosity compared to water. Fluid viscosity reflects its resistance to shear or flow and serves as an indicator of its adhesive, cohesive, or frictional properties. This resistance arises due to internal molecular friction within the fluid, resulting in a frictional drag effect. There are two key measures of fluid viscosity: dynamic and kinematic viscosity. Viscosity Types: 1. Dynamic Viscosity - Characteristic of fluids and plastic solids, dynamic viscosity quantifies a substance's resistance to deformation and is informally known as "thickness." 2. Dynamic Viscosity for Oil and Water - Conversion factors for viscosity, encompassing various oils, water, glycerin, and different temperatures. 3. Kinematic Viscosity - Includes units such as Stokes, centistokes, lentor, square meter/second, square foot/second, poise cubic centimeter/gram, and more. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.

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

Screenshots

Viscosity Conversion4 screens
Orifice Flow Rate Calculator4 screens

Verdict

The call

The clearest difference is price: Orifice Flow Rate Calculator at Free against Viscosity Conversion's $2.99. Orifice Flow Rate Calculator also leads on update cadence (every 6 months vs every 30 months). Viscosity Conversion's advantage is iOS requirement (13 vs 15.6). On 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

Orifice Flow Rate Calculator is free to download; Viscosity Conversion costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Viscosity Conversion ships an update every 30 months, Orifice Flow Rate Calculator every 6 months. Both last shipped on October 9, 2026.

Scorecard3 real differences · 7 level
Viscosity Conversion versus Orifice Flow Rate Calculator: the parameters behind the verdict, then further details
ParameterViscosity ConversionOrifice Flow Rate Calculator
Price$2.99Free — better
Rating—4.9 (98 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—98 — better
Update frequencyEvery 30 monthsEvery 6 months — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13 — better15.6
Further details — not scored
Size1 MB2 MB
Age rating4+4+
DeveloperNitrioR.L. Laughlin & Company, Inc.

In-app purchases

None

Viscosity Conversion

No in-app purchases

None

Orifice Flow Rate Calculator

No in-app purchases

Questions

Is Viscosity Conversion free?
Viscosity Conversion costs $2.99, with no in-app purchases.
Is Orifice Flow Rate Calculator free?
Orifice Flow Rate Calculator is free to download, with no in-app purchases.
Do Viscosity Conversion or Orifice Flow Rate Calculator have ads?
Neither Viscosity Conversion nor Orifice Flow Rate Calculator shows ads.
Which is updated more often, Viscosity Conversion or Orifice Flow Rate Calculator?
Viscosity Conversion ships an update every 30 months, and Orifice Flow Rate Calculator every 6 months. Most recently, Viscosity Conversion was updated on October 9, 2026 and Orifice Flow Rate Calculator on October 9, 2026.

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