Viscosity Conversion vs Assalub Oil Viscosity App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Viscosity Conversion
Read full descriptionHide 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.
Assalub Oil Viscosity App
Read full descriptionHide full description
This application give you the viscosity for an oil at the temperature you choose. This calculation is based on ASTM D341. You need the viscosity for the oil at 40 °C (104 °F) and 100 °C (212 °F). Then you give the temperature for which you want the viscosity calculated and the app will show it. The Oil Viscosity App generates the result instantly, without having to use the viscosity/temperature diagram which is the usual way of calculating the viscosity at a certain temperature. For example, if you have a gear box where the oil temperature is 85 °C. The oil must have a minimum viscosity of 50 cSt for this type of gear box. Now you want to know if your oil is suitable. You check the data sheet for your oil, and find out that the viscosity at 40 °C is 320 cSt and the viscosity at 100 °C is 37 cSt. You put in the numbers in the App and easily get the result: 56.5 cSt at 85 °C. Assalub AB is a Swedish company manufacturing equipment for industrial lubrication systems. www.assalub.se
Screenshots
Verdict
The clearest difference is iOS requirement: Viscosity Conversion at 13 against Assalub Oil Viscosity App's 15.1. On price, update cadence, ads and in-app purchases 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
Viscosity Conversion costs $2.99 and Assalub Oil Viscosity App $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Viscosity Conversion ships an update every 30 months, Assalub Oil Viscosity App every 17 months. The most recent releases landed on October 29, 2026 and October 11, 2026 respectively.
| Parameter | Viscosity Conversion | Assalub Oil Viscosity App |
|---|---|---|
| Price | $2.99 | $2.99 |
| Update frequency | Every 30 months | Every 17 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13 — better | 15.1 |
| Further details — not scored | ||
| Size | 1 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Nitrio | Assalub AB |
In-app purchases
Viscosity Conversion
No in-app purchases
Assalub Oil Viscosity App
No in-app purchases
Questions
Is Viscosity Conversion free?
Is Assalub Oil Viscosity App free?
Do Viscosity Conversion or Assalub Oil Viscosity App have ads?
Which is updated more often, Viscosity Conversion or Assalub Oil Viscosity App?
Other comparisons















