Comparison

Boiler Efficiency vs Viscosity Conversion

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

Head to head
About

Boiler Efficiency

Perform preliminary audits on boiler efficiency and identify various losses in steam generation. Customize boiler applications, compare fuel grades, and analyze heat balance and flue gas for potential savings and improvements.

Highlights
  • Boiler efficiency audits
  • Loss identification
  • Customizable boiler applications
  • Fuel grade comparison
  • Heat balance sheet
  • Flue gas analysis
  • CHP (Brayton) cycle analysis
Features
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BoilerFE can run a quick preliminary audit on boiler efficiency and various losses associated in generation of pressurized steam. Users can create their specific boiler application including CHP (Brayton) cycle by editing default generic boiler and save it in a file for time to time performance review. Thus it would also enable users to compare different grade of fuels used in the same boiler under similar conditions. Therefore, this app can be very helpful to energy engineers and auditors in assessing the potential savings as well as to identify areas for improvement. App covers different types of boilers including CHP with option to select fuels such as coal, oil and gases with specific compositions. Following is the list of fuels under each category one can select from the picker. Each fuel has a default calorific value (HHV) based on certain composition. Users can edit this default value for accuracy. For fuels that are not in the list, users can create a custom fuel with composition and calorific value. Coal: Coal-Illinois, Coal-Pennsylvania, Coal-Ohio, Coal-W.VA, Coal- Kentucky, Coal, Custom. Fuel Oil: Furnace Oil#1, Furnace Oil#2, Furnace Oil#3, Furnace Oil#4, Furnace Oil#5, Furnace Oil#6, LSHS, Methanol, Ethanol, LPG, Kerosene, HSD, Custom. Gas: Methane, Ethane, Propane, Butane, Natural gas, Custom. By default, App uses a generic Coal fired in an industrial boiler that can be edited for more specific applications. The screen shots displays this example with results on heat balance sheet, flue gas analysis and stoichiometry. A brief description of the combustion model used in this app is also provided in App notes for reference. Type of boilers and inputs: App covers packaged, industrial and utility boilers with specific design data for efficiency and heat balance calculations. Users can conveniently choose the different unit standards for data input. Input such as airflow, fuel type and feed rate can be edited for more specific application using the respective editable tool bar buttons. There is a separate section on CHP (Brayton) cycle that is activated from Boiler info screen. All CHP data can be saved as well with unique titles and reloaded as and when required. Foot notes are provided to help edit different input parameters. Result: Besides computation of boiler efficiency using direct method, app provides the following results as shown in the screen shots. 1.Heat balance sheet 2.Flue gas analysis 3.Stoichiometric analysis of the combustion process. In this version, the app notes has the link for a complete documentation of implementation and validation of math-model used in individual apps. Also in addition this document includes guidelines to plan periodic maintenance activities required for a satisfactory performance of different energy intensive equipment such as boiler, pump, heat exchangers etc. commonly used in process industries.

About

Viscosity Conversion

Features
Read full description

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.

Screenshots

Boiler Efficiency4 screens
Viscosity Conversion4 screens

Verdict

The call

The clearest difference is update cadence: Boiler Efficiency at every 10 months against Viscosity Conversion's every 30 months. Viscosity Conversion's advantage is price ($2.99 vs $5.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Boiler Efficiency costs $5.99 and Viscosity Conversion $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Boiler Efficiency ships an update every 10 months, Viscosity Conversion every 30 months. The most recent releases landed on September 16, 2026 and September 23, 2026 respectively.

Scorecard2 real differences ยท 6 level
Boiler Efficiency versus Viscosity Conversion: the parameters behind the verdict, then further details
ParameterBoiler EfficiencyViscosity Conversion
Price$5.99$2.99 โ€” better
Positive reviews0.0% of reviewsโ€”
Update frequencyEvery 10 months โ€” betterEvery 30 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidโ€”
DevicesiPhone, iPodiPhone, iPad, iPod โ€” better
Requires iOS14.313 โ€” better
Further details โ€” not scored
Size2 MB1 MB
Age rating4+4+
DeveloperKaup Shenoy AssociatesNitrio

In-app purchases

None

Boiler Efficiency

No in-app purchases

None

Viscosity Conversion

No in-app purchases

Questions

Is Boiler Efficiency free?
Boiler Efficiency costs $5.99, with no in-app purchases.
Is Viscosity Conversion free?
Viscosity Conversion costs $2.99, with no in-app purchases.
Do Boiler Efficiency or Viscosity Conversion have ads?
Neither Boiler Efficiency nor Viscosity Conversion shows ads.
Which is updated more often, Boiler Efficiency or Viscosity Conversion?
Boiler Efficiency ships an update every 10 months, and Viscosity Conversion every 30 months. Most recently, Boiler Efficiency was updated on September 16, 2026 and Viscosity Conversion on September 23, 2026.

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